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1 2655 Park Center Dr., Suite A Simi Valley, CA T: F: LABORATORY REPORT January 19, 2016 Glenn La Fevers Southern California Gas Company Tampa Ave Northridge, CA RE: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / Dear Glenn: Enclosed are the results of the samples submitted to our laboratory on January 18, For your reference, these analyses have been assigned our service request number P All analyses were performed according to our laboratory s NELAP and DoD-ELAP-approved quality assurance program. The test results meet requirements of the current NELAP and DoD-ELAP standards, where applicable, and except as noted in the laboratory case narrative provided. For a specific list of NELAP and DoD-ELAP-accredited analytes, refer to the certifications section at Results are intended to be considered in their entirety and apply only to the samples analyzed and reported herein. If you have any questions, please call me at (805) Respectfully submitted, ALS Environmental Sue Anderson Project Manager RIGHT SOLUTIONS RIGHT PARTNER 1 of 46

2 2655 Park Center Dr., Suite A Simi Valley, CA T: F: Service Request No: P Project: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / CASE NARRATIVE The samples were received intact under chain of custody on January 18, 2016 and were stored in accordance with the analytical method requirements. Please refer to the sample acceptance check form for additional information. The results reported herein are applicable only to the condition of the samples at the time of sample receipt. The canister for sample Castlebay Elementary School (P ) was found to be leaking during the pressurization step. The can was analyzed as soon as pressuirization completed. Any data for this canister should be considered estimated due to the anomaly. Because of the canister malfunction the Zefon bag sample was also analyzed for Methane and Volatile Organic Compounds per client request. Methane Analysis The Silonite canister samples were analyzed per modified EPA Method TO-3 for methane using a gas chromatograph equipped with a flame ionization detector (FID). This procedure is described in laboratory SOP VOA-TO3C1C6. This method is included on the laboratory s DoD-ELAP scope of accreditation, however it is not part of the NELAP or AIHA-LAP accreditation. Sulfur Analysis The Zefon bag samples were analyzed for ten sulfur compounds per ASTM D using a gas chromatograph equipped with a sulfur chemiluminescence detector (SCD). All compounds with the exception of hydrogen sulfide and carbonyl sulfide are quantitated against the initial calibration curve for methyl mercaptan. This method is included on the laboratory s NELAP scope of accreditation, however it is not part of the DoD-ELAP or AIHA-LAP accreditation. Volatile Organic Compound Analysis The Silonite canister samples were also analyzed for selected volatile organic compounds in accordance with EPA Method TO-15 from the Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air, Second Edition (EPA/625/R-96/010b), January, This procedure is described in laboratory SOP VOA-TO15. The analytical system was comprised of a gas chromatograph / mass spectrometer (GC/MS) interfaced to a whole-air preconcentrator. According to the method, the use of Tedlar bags is considered a method modification. This method is included on the laboratory s NELAP and DoD-ELAP scope of accreditation, however it is not part of the AIHA-LAP accreditation. Any analytes flagged with an X are not included on the NELAP or DoD-ELAP accreditation. RIGHT SOLUTIONS RIGHT PARTNER 2 of 46

3 2655 Park Center Dr., Suite A Simi Valley, CA T: F: Service Request No: P Project: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / CASE NARRATIVE The canisters were cleaned, prior to sampling, down to the method reporting limit (MRL) reported for this project. Please note, projects which require reporting below the MRL could have results between the MRL and method detection limit (MDL) that are biased high. The results of analyses are given in the attached laboratory report. All results are intended to be considered in their entirety, and ALS Environmental (ALS) is not responsible for utilization of less than the complete report. Use of ALS Environmental (ALS) s Name. Client shall not use ALS s name or trademark in any marketing or reporting materials, press releases or in any other manner ( Materials ) whatsoever and shall not attribute to ALS any test result, tolerance or specification derived from ALS s data ( Attribution ) without ALS s prior written consent, which may be withheld by ALS for any reason in its sole discretion. To request ALS s consent, Client shall provide copies of the proposed Materials or Attribution and describe in writing Client s proposed use of such Materials or Attribution. If ALS has not provided written approval of the Materials or Attribution within ten (10) days of receipt from Client, Client s request to use ALS s name or trademark in any Materials or Attribution shall be deemed denied. ALS may, in its discretion, reasonably charge Client for its time in reviewing Materials or Attribution requests. Client acknowledges and agrees that the unauthorized use of ALS s name or trademark may cause ALS to incur irreparable harm for which the recovery of money damages will be inadequate. Accordingly, Client acknowledges and agrees that a violation shall justify preliminary injunctive relief. For questions contact the laboratory. RIGHT SOLUTIONS RIGHT PARTNER 3 of 46

4 2655 Park Center Dr., Suite A Simi Valley, CA T: F: ALS Environmental Simi Valley CERTIFICATIONS, ACCREDITATIONS, AND REGISTRATIONS Agency Web Site Number AIHA Arizona DHS AZ0694 DoD ELAP L Florida DOH (NELAP) Maine DHHS Minnesota DOH (NELAP) New Jersey DEP (NELAP) New York DOH (NELAP) Oregon PHD (NELAP) Pennsylvania DEP Texas CEQ (NELAP) Utah DOH (NELAP) E CA oryaccreditation/pages/index.aspx (Registration) T CA Washington DOE C946 Analyses were performed according to our laboratory s NELAP and DoD-ELAP approved quality assurance program. A complete listing of specific NELAP and DoD-ELAP certified analytes can be found in the certifications section at or at the accreditation body s website. Each of the certifications listed above have an explicit Scope of Accreditation that applies to specific matrices/methods/analytes; therefore, please contact the laboratory for information corresponding to a particular certification. RIGHT SOLUTIONS RIGHT PARTNER 4 of 46

5 DETAIL SUMMARY REPORT Service Request: P Project ID: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / Date Received: 1/18/2016 Time Received: 09:05 Client Sample ID Lab Code Matrix Date Collected ALS ENVIRONMENTAL Time Collected Container ID Mason/Corbin P Air 1/18/ :05 AS X X X Porter Ranch Community School P Air 1/18/ :24 AS X X X Galileo/Donatello P Air 1/18/ :43 AS X X X Porter Ranch Estates P Air 1/18/ :03 AS X X X Highlands 1 P Air 1/18/ :24 AS X X X Highlands 3 P Air 1/18/ :42 AS X X X Porter Ranch Estates 3 P Air 1/18/ :04 AS X X X Highlands 2 P Air 1/18/ :22 AS X X X Castlebay Elementary School P Air 1/18/ :41 AS X X X X X Starter Set Preschool P Air 1/18/ :59 AS X X X Porter Ridge Park P Air 1/18/ :18 AS X X X Pi1 (psig) Pf1 (psig) TO-3 Modified - C1C6+ Can TO-15 - VOC Cans ASTM D Sulfur Bag TO-3 Modified - C1C6+ Bag TO-15 Modified - VOC Bags P _Detail Summary_ _RB.xls - DETAIL SUMMARY 5 of 46

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8 ALS Environmental Sample Acceptance Check Form Work order: P Project: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / Sample(s) received on: 1/18/16 Date opened: 1/18/16 by: SANDERSON Note: This form is used for all samples received by ALS. The use of this form for custody seals is strictly meant to indicate presence/absence and not as an indication of compliance or nonconformity. Thermal preservation and ph will only be evaluated either at the request of the client and/or as required by the method/sop. Yes No N/A 1 Were sample containers properly marked with client sample ID? 2 Did sample containers arrive in good condition? 3 Were chain-of-custody papers used and filled out? 4 Did sample container labels and/or tags agree with custody papers? 5 Was sample volume received adequate for analysis? 6 Are samples within specified holding times? 7 Was proper temperature (thermal preservation) of cooler at receipt adhered to? 8 Were custody seals on outside of cooler/box/container? Location of seal(s)? Sealing Lid? Were signature and date included? Were seals intact? 9 Do containers have appropriate preservation, according to method/sop or Client specified information? Is there a client indication that the submitted samples are ph preserved? Were VOA vials checked for presence/absence of air bubbles? Does the client/method/sop require that the analyst check the sample ph and if necessary alter it? 10 Tubes: Are the tubes capped and intact? 11 Badges: Are the badges properly capped and intact? Are dual bed badges separated and individually capped and intact? Lab Sample ID Container Required Received Adjusted VOA Headspace P P P P P P P P P P P P P P P Description ph * ph ph (Presence/Absence) Comments 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can Explain any discrepancies: (include lab sample ID numbers): Receipt / Preservation RSK - MEEPP, HCL (ph<2); RSK - CO2, (ph 5-8); Sulfur (ph>4) P _Southern California Gas Company_SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION _ xls - Page 1 of 2 8 of 46 1/19/16 1:34 PM

9 ALS Environmental Sample Acceptance Check Form Work order: P Project: SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / Sample(s) received on: 1/18/16 Date opened: 1/18/16 by: SANDERSON Lab Sample ID Container Required Received Adjusted VOA Headspace Receipt / Preservation Description ph * ph ph (Presence/Absence) Comments P P P P P P P L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag 6.0 L Silonite Can 1 L Zefon Bag Explain any discrepancies: (include lab sample ID numbers): RSK - MEEPP, HCL (ph<2); RSK - CO2, (ph 5-8); Sulfur (ph>4) P _Southern California Gas Company_SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION _ xls - Page 2 of 2 9 of 46 1/19/16 1:34 PM

10 ALS Project ID: P Methane Test Code: EPA TO-3 Modified Instrument ID: HP5890 II/GC8/FID Date(s) Collected: 1/18/16 Analyst: Mike Conejo Date Received: 1/18/16 Sampling Media: 6.0 L Silonite Canister(s) Date Analyzed: 1/18/16 Test Notes: Canister Injection Client Sample ID ALS Sample ID Dilution Volume Result MRL Data Factor ml(s) ppmv ppmv Qualifier Mason/Corbin P Porter Ranch Community School P Galileo/Donatello P Porter Ranch Estates P Highlands 1 P Highlands 3 P Porter Ranch Estates 3 P Highlands 2 P Castlebay Elementary School P ! Starter Set Preschool P Porter Ridge Park P Method Blank P MB ND 0.50! = See case narrative. P _C1-C6_ _SC.xls - TO-3 10 of 46 TO3_C1C6-SCGC.XLS - Page No.:

11 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: EPA TO-3 Modified Date Collected: NA Instrument ID: HP5890 II/GC8/FID Date Received: NA Analyst: Mike Conejo Date Analyzed: 1/18/16 Sampling Media: 6.0 L Silonite Canister Volume(s) Analyzed: NA ml(s) Test Notes: ALS Compound Spike Amount Result % Recovery Acceptance ppmv ppmv Limits Methane 1, Data Qualifier P _C1-C6_ _SC.xls - LCS 11 of 46 TO3_C1C6-SCGC.XLS - Page No.:

12 ALS Project ID: P Methane Test Code: EPA TO-3 Modified Instrument ID: HP5890 II/GC8/FID Date(s) Collected: 1/18/16 Analyst: Mike Conejo Date Received: 1/18/16 Sampling Media: 1 L Zefon Bag(s) Date Analyzed: 1/18/16 Test Notes: Injection Client Sample ID ALS Sample ID Volume Result MRL Data ml(s) ppmv ppmv Qualifier Castlebay Elementary School P Method Blank P MB 1.0 ND 0.50 P _C1-C6_ _SC.xls - TO-3 12 of 46 TO3_C1C6-SCGC.XLS - Page No.:

13 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: EPA TO-3 Modified Date Collected: NA Instrument ID: HP5890 II/GC8/FID Date Received: NA Analyst: Mike Conejo Date Analyzed: 1/18/16 Sampling Media: 1 L Zefon Bag Volume(s) Analyzed: NA ml(s) Test Notes: ALS Compound Spike Amount Result % Recovery Acceptance ppmv ppmv Limits Methane 1, Data Qualifier P _C1-C6_ _SC.xls - LCS 13 of 46 TO3_C1C6-SCGC.XLS - Page No.:

14 Client Sample ID: Mason/Corbin ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 02:05 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:30 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample 14 of 46 SULFUR-SCGC.XLS - Page No.:

15 Client Sample ID: Porter Ranch Community School ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 6890A/GC13/SCD Time Collected: 02:24 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:31 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (2) 15 of 46 SULFUR-SCGC.XLS - Page No.:

16 Client Sample ID: Galileo/Donatello ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 02:43 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:42 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (3) 16 of 46 SULFUR-SCGC.XLS - Page No.:

17 Client Sample ID: Porter Ranch Estates ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 6890A/GC13/SCD Time Collected: 03:03 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:42 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (4) 17 of 46 SULFUR-SCGC.XLS - Page No.:

18 Client Sample ID: Highlands 1 ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 03:24 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:52 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (5) 18 of 46 SULFUR-SCGC.XLS - Page No.:

19 Client Sample ID: Highlands 3 ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 6890A/GC13/SCD Time Collected: 03:42 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 09:53 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (6) 19 of 46 SULFUR-SCGC.XLS - Page No.:

20 Client Sample ID: Porter Ranch Estates 3 ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 04:04 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 10:03 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (7) 20 of 46 SULFUR-SCGC.XLS - Page No.:

21 Client Sample ID: Highlands 2 ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 6890A/GC13/SCD Time Collected: 04:22 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 10:04 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (8) 21 of 46 SULFUR-SCGC.XLS - Page No.:

22 Client Sample ID: Castlebay Elementary School ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 04:41 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 10:14 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (9) 22 of 46 SULFUR-SCGC.XLS - Page No.:

23 Client Sample ID: Starter Set Preschool ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 6890A/GC13/SCD Time Collected: 04:59 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 10:15 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (10) 23 of 46 SULFUR-SCGC.XLS - Page No.:

24 Client Sample ID: Porter Ridge Park ALS Project ID: P ALS Sample ID: P Test Code: ASTM D Date Collected: 1/18/16 Instrument ID: Agilent 7890A/GC22/SCD Time Collected: 05:18 Analyst: Mike Conejo Date Received: 1/18/16 Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 10:26 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - Sample (11) 24 of 46 SULFUR-SCGC.XLS - Page No.:

25 Client Sample ID: Method Blank ALS Project ID: P ALS Sample ID: P MB Test Code: ASTM D Date Collected: NA Instrument ID: Agilent 6890A/GC13/SCD Time Collected: NA Analyst: Mike Conejo Date Received: NA Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 08:21 Volume(s) Analyzed: 1.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - MBlank 25 of 46 SULFUR-SCGC.XLS - Page No.:

26 Client Sample ID: Method Blank ALS Project ID: P ALS Sample ID: P MB Test Code: ASTM D Date Collected: NA Instrument ID: Agilent 7890A/GC22/SCD Time Collected: NA Analyst: Mike Conejo Date Received: NA Sample Type: 1 L Zefon Bag Date Analyzed: 1/18/16 Test Notes: Time Analyzed: 08:06 Volume(s) Analyzed: 2.0 ml(s) Hydrogen Sulfide ND Carbonyl Sulfide ND Methyl Mercaptan ND Ethyl Mercaptan ND Dimethyl Sulfide ND Carbon Disulfide ND Isopropyl Mercaptan ND tert-butyl Mercaptan ND n-propyl Mercaptan ND Tetrahydrothiophene ND 2.5 P _ASTM5504_ _SC.xls - MBlank (2) 26 of 46 SULFUR-SCGC.XLS - Page No.:

27 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: ASTM D Date Collected: NA Instrument ID: Agilent 6890A/GC13/SCD Date Received: NA Analyst: Mike Conejo Date Analyzed: 1/18/16 Sample Type: 1 L Zefon Bag Volume(s) Analyzed: NA ml(s) Test Notes: ALS CAS # Compound Spike Amount Result % Recovery Acceptance Data ppbv ppbv Limits Qualifier Hydrogen Sulfide 2,000 2, Carbonyl Sulfide 2,000 2, Methyl Mercaptan 2,000 2, P _ASTM5504_ _SC.xls - LCS 27 of 46 SULFUR-SCGC.XLS - Page No.:

28 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: ASTM D Date Collected: NA Instrument ID: Agilent 7890A/GC22/SCD Date Received: NA Analyst: Mike Conejo Date Analyzed: 1/18/16 Sample Type: 1 L Zefon Bag Volume(s) Analyzed: NA ml(s) Test Notes: ALS CAS # Compound Spike Amount Result % Recovery Acceptance Data ppbv ppbv Limits Qualifier Hydrogen Sulfide 1,000 1, Carbonyl Sulfide 1,000 1, Methyl Mercaptan 1,000 1, P _ASTM5504_ _SC.xls - LCS (2) 28 of 46 SULFUR-SCGC.XLS - Page No.:

29 Client Sample ID: Mason/Corbin ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00996 Initial Pressure (psig): Final Pressure (psig): 1.12 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.16 P _TO15_ _SC.xls - Sample 29 of 46 TO15-SCGC.XLS - Page No.:

30 Client Sample ID: Porter Ranch Community School ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00960 Initial Pressure (psig): Final Pressure (psig): 1.02 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.14 P _TO15_ _SC.xls - Sample (2) 30 of 46 TO15-SCGC.XLS - Page No.:

31 Client Sample ID: Galileo/Donatello ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00933 Initial Pressure (psig): Final Pressure (psig): 1.05 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.14 P _TO15_ _SC.xls - Sample (3) 31 of 46 TO15-SCGC.XLS - Page No.:

32 Client Sample ID: Porter Ranch Estates ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00965 Initial Pressure (psig): Final Pressure (psig): 1.06 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.16 P _TO15_ _SC.xls - Sample (4) 32 of 46 TO15-SCGC.XLS - Page No.:

33 Client Sample ID: Highlands 1 ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00907 Initial Pressure (psig): Final Pressure (psig): 1.10 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.16 P _TO15_ _SC.xls - Sample (5) 33 of 46 TO15-SCGC.XLS - Page No.:

34 Client Sample ID: Highlands 3 ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00911 Initial Pressure (psig): Final Pressure (psig): 1.22 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.15 P _TO15_ _SC.xls - Sample (6) 34 of 46 TO15-SCGC.XLS - Page No.:

35 Client Sample ID: Porter Ranch Estates 3 ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00977 Initial Pressure (psig): Final Pressure (psig): 1.71 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.15 P _TO15_ _SC.xls - Sample (7) 35 of 46 TO15-SCGC.XLS - Page No.:

36 Client Sample ID: Highlands 2 ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00972 Initial Pressure (psig): Final Pressure (psig): 1.17 Canister Dilution Factor: Benzene Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.14 P _TO15_ _SC.xls - Sample (8) 36 of 46 TO15-SCGC.XLS - Page No.:

37 Client Sample ID: Castlebay Elementary School ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes:! Container ID: AS00955 Initial Pressure (psig): Final Pressure (psig): 1.12 Canister Dilution Factor: Benzene Toluene Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.14! = See case narrative. P _TO15_ _SC.xls - Sample (9) 37 of 46 TO15-SCGC.XLS - Page No.:

38 Client Sample ID: Starter Set Preschool ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00980 Initial Pressure (psig): Final Pressure (psig): 1.19 Canister Dilution Factor: Benzene Toluene Ethylbenzene ND m,p-xylenes o-xylene ND 0.14 P _TO15_ _SC.xls - Sample (10) 38 of 46 TO15-SCGC.XLS - Page No.:

39 Client Sample ID: Porter Ridge Park ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Container ID: AS00936 Initial Pressure (psig): Final Pressure (psig): 1.27 Canister Dilution Factor: Benzene Toluene Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.15 P _TO15_ _SC.xls - Sample (11) 39 of 46 TO15-SCGC.XLS - Page No.:

40 Client Sample ID: Method Blank ALS Project ID: P ALS Sample ID: P MB Test Code: EPA TO-15 Date Collected: NA Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: NA Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Canister Dilution Factor: Benzene ND Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.12 P _TO15_ _SC.xls - MBlank 40 of 46 TO15-SCGC.XLS - Page No.:

41 SURROGATE SPIKE RECOVERY RESULTS Client: Client Project ID: Southern California Gas Company SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / ALS Project ID: P Test Code: EPA TO-15 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date(s) Collected: 1/18/16 Analyst: Simon Cao Date(s) Received: 1/18/16 Sample Type: 6.0 L Silonite Canister(s) Date(s) Analyzed: 1/18/16 Test Notes: 1,2-Dichloroethane-d4 Toluene-d8 Bromofluorobenzene Client Sample ID ALS Sample ID Percent Percent Percent Acceptance Data Recovered Recovered Recovered Limits Qualifier Method Blank P MB Lab Control Sample P LCS Mason/Corbin P Porter Ranch Community School P Galileo/Donatello P Porter Ranch Estates P Highlands 1 P Highlands 3 P Porter Ranch Estates 3 P Highlands 2 P Castlebay Elementary School P Starter Set Preschool P Porter Ridge Park P Surrogate percent recovery is verified and accepted based on the on-column result. Reported results are shown in concentration units and as a result of the calculation, may vary slightly from the on-column percent recovery. P _TO15_ _SC.xls - Surrogates 41 of 46 TO15-SCGC.XLS - Page No.:

42 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: EPA TO-15 Date Collected: NA Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: NA Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 6.0 L Silonite Canister Volume(s) Analyzed: Liter(s) Test Notes: ALS CAS # Compound Spike Amount ppbv Result ppbv % Recovery Acceptance Limits Data Qualifier Benzene Toluene Ethylbenzene m,p-xylenes o-xylene Laboratory Control Sample percent recovery is verified and accepted based on the on-column result. Reported results are shown in concentration units and as a result of the calculation, may vary slightly. P _TO15_ _SC.xls - LCS 42 of 46 TO15-SCGC.XLS - Page No.:

43 Client Sample ID: Castlebay Elementary School ALS Project ID: P ALS Sample ID: P Test Code: EPA TO-15 Modified Date Collected: 1/18/16 Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: 1/18/16 Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 1 L Zefon Bag Volume(s) Analyzed: 0.10 Liter(s) Test Notes: Benzene ND Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 1.2 P _TO15_ _SC.xls - Sample (9) 43 of 46 TO15-SCGC.XLS - Page No.:

44 Client Sample ID: Method Blank ALS Project ID: P ALS Sample ID: P MB Test Code: EPA TO-15 Modified Date Collected: NA Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: NA Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 1 L Zefon Bag Volume(s) Analyzed: 1.00 Liter(s) Test Notes: Benzene ND Toluene ND Ethylbenzene ND m,p-xylenes ND o-xylene ND 0.12 P _TO15_ _SC.xls - MBlank 44 of 46 TO15-SCGC.XLS - Page No.:

45 SURROGATE SPIKE RECOVERY RESULTS Client: Client Project ID: Southern California Gas Company SOUTHERN CALIFORNIA GAS - ALISO CANYON STATION / ALS Project ID: P Test Code: EPA TO-15 Modified Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date(s) Collected: 1/18/16 Analyst: Simon Cao Date(s) Received: 1/18/16 Sample Type: 1 L Zefon Bag(s) Date(s) Analyzed: 1/18/16 Test Notes: 1,2-Dichloroethane-d4 Toluene-d8 Bromofluorobenzene Client Sample ID ALS Sample ID Percent Percent Percent Acceptance Data Recovered Recovered Recovered Limits Qualifier Method Blank P MB Lab Control Sample P LCS Castlebay Elementary School P Surrogate percent recovery is verified and accepted based on the on-column result. Reported results are shown in concentration units and as a result of the calculation, may vary slightly from the on-column percent recovery. P _TO15_ _SC.xls - Surrogates 45 of 46 TO15-SCGC.XLS - Page No.:

46 LABORATORY CONTROL SAMPLE SUMMARY Client Sample ID: Lab Control Sample ALS Project ID: P ALS Sample ID: P LCS Test Code: EPA TO-15 Modified Date Collected: NA Instrument ID: Tekmar AUTOCAN/Agilent 5973inert/6890N/MS9 Date Received: NA Analyst: Simon Cao Date Analyzed: 1/18/16 Sample Type: 1 L Zefon Bag Volume(s) Analyzed: Liter(s) Test Notes: ALS CAS # Compound Spike Amount ppbv Result ppbv % Recovery Acceptance Limits Data Qualifier Benzene Toluene Ethylbenzene m,p-xylenes o-xylene Laboratory Control Sample percent recovery is verified and accepted based on the on-column result. Reported results are shown in concentration units and as a result of the calculation, may vary slightly. P _TO15_ _SC.xls - LCS 46 of 46 TO15-SCGC.XLS - Page No.: