Site Specific Conditional Sampler Garfield County, Colorado. VOC Data Summaries. Prepared for

Transcription

1 Site Specific Conditional Sampler Garfield County, Colorado VOC Data Summaries Prepared for Garfield County Public Health 195 West 14 th Street Rifle, Colorado Prepared by 1901 Sharp Point Dr., Suite F Fort Collins, CO January 4, 2018

2 TABLE OF CONTENTS Section Page 1.0 INTRODUCTION SAMPLE COLLECTION AND ANALYSIS OPERATIONAL SUMMARY DATA SUMMARIES 4-1 APPENDIX A Lab Results A-1 LIST OF FIGURES Figure Page 1-1 Map showing location of the general sampling area Photo of conditional sampler system Photo of example canister Measured SNMOC Concentrations Meteorological Time Series Plot July Meteorological Time Series Plot August Meteorological Time Series Plot September Wind Rose July Wind Rose August Wind Rose September LIST OF TABLES Table Page 3-1 Operational Summary 3-1 i

3 1.0 INTRODUCTION In response to citizen concerns, Garfield County Public Health contracted with Air Resource Specialists, Inc. (ARS) to design and build a conditional sampler to collect canister samples near a newly developed well-pad operated by URSA Operating Company, LLC. Figure 1-1 presents a map showing the general location of URSA operations and the monitoring location. Figure 1-2 shows a photograph of the sampling system. This data submittal report summarizes Speciated Non-Methane Organic Compounds (SNMOC) measured at the URSA site. Any questions regarding the content of this report or the accompanying digital data files should be addressed to: Morgan Hill Environmental Health Specialist III mhill@garfield-county.com or Anna Triebel atriebel@garfield-county.com Garfield County Public Health - Rifle. 195 West 14th Street Rifle, CO phone fax Garfield County Public Health - Glenwood Springs 2014 Blake Avenue Glenwood Springs, CO phone fax 1-1

4 Figure 1-1. Map Showing General Location of the Sampling Area. 1-2

5 Figure 1-2. Site Specific Conditional Sampler Figure 1-3. Example Summa Canister 1-3

6 2.0 SAMPLE COLLECTION AND ANALYSIS Methodologies for the collection and analysis of Volatile Organic Compounds (VOC) at the URSA site specific conditional monitoring site meet EPA s Compendium of Methods for Determination of Toxic Organic Compounds in Ambient Air. Speciated compounds are analyzed from samples collected using a SUMMA stainless steel canister following EPA s Compendium Method TO-12, Determination of Non-Methane Organic Compounds (NMOC) in Ambient Air Using Cryogenic Preconcentration and Direct Flame Ionization Detection (PDFID). Collected samples are sent to Environmental Research Group, Inc. (ERG) for analysis. The conditional sampler is designed to collect ambient air samples when specific wind direction conditions are present. To collect samples influenced by well pad activities, the sampler valves open on Canister 1 when prevailing winds come from the north (between 350 and 10 ). When the prevailing winds are from the south (between 170 and 190 ), the sampler valves open on Canister 2, separate from Canister 1, to collect data not likely to be associated with well pad activities. For this study, each sample comprises at least a seven day period to ensure sufficient collection for VOC identification. Following exposure, samples were collected by Garfield County Public Health site operators and shipped directly to ERG for analysis. Chain-of-custody accounting is fully documented by shipping records, shipping logs, and field sampling log sheets, maintained by Garfield County Public Health. ERG performs sample analysis and data validation for samples per EPA method TO-12 requirements and provides validated data to ARS for inclusion in reports, data submittals and archives. 2-1

7 3.0 OPERATIONAL SUMMARY The operational timelines for the canister samples for the reporting period are summarized in Table 3-1. The summaries include sampling times, site visits and significant events affecting data collection. Table 3-1 Sampler Operational Timeline July September 2017 Month/Year Canister One Total Sampling Time Canister Two Total Sampling Time July minutes 871 minutes August minutes 694 minutes September minutes 622 minutes 3-1

8 4.0 DATA SUMMARIES Volatile organic compounds (VOCs) are carbon-based and hydrogen-based chemicals that exist in the gas phase or can evaporate from liquids. VOCs can react in the atmosphere to form ozone (O 3 ) and particulate matter. Hazardous air pollutants (HAPs) are a subset of VOC compounds, and include compounds that are known or believed to cause human health effects. Speciated Non-Methane Organic Compounds (SNMOC) are collected and analyzed according to EPA Compendium Method TO-12. Figure 4-1 presents measured SNMOC compounds collected from the site specific conditional sampler during each week long sampling event. Associated meteorological data are presented in Figures 4-2 through 4-4 as timeline series plots. Figures 4-5 through 4-7 present monthly wind roses associated with each conditional sampling period. 4-1

9 Figure 4-1. Measured SNMOC Concentrations Site Specific Conditional Sampler 4-2

10 Figure 4-3 Garfield County - Site Specific Sampler - Meteorological Data July SDWD VWD (deg) SWS (m/s) TMP (degc) Date 07/01 07/02 07/03 07/04 07/05 07/06 07/07 07/08 07/09 07/10 07/11 07/12 07/13 07/14 07/15 07/16 07/17 07/18 07/19 07/20 07/21 07/22 07/23 07/24 07/25 07/26 07/27 07/28 07/29 07/30 07/31 4-3

11 Figure 4-4 Garfield County - Site Specific Sampler - Meteorological Data August SDWD VWD (deg) SWS (m/s) TMP (degc) Date 08/01 08/02 08/03 08/04 08/05 08/06 08/07 08/08 08/09 08/10 08/11 08/12 08/13 08/14 08/15 08/16 08/17 08/18 08/19 08/20 08/21 08/22 08/23 08/24 08/25 08/26 08/27 08/28 08/29 08/30 08/31 4-4

12 Figure 4-5 Garfield County - Site Specific Sampler - Meteorological Data September SDWD VWD (deg) SWS (m/s) TMP (degc) Date 09/01 09/02 09/03 09/04 09/05 09/06 09/07 09/08 09/09 09/10 09/11 09/12 09/13 09/14 09/15 09/16 09/17 09/18 09/19 09/20 09/21 09/22 09/23 09/24 09/25 09/26 09/27 09/28 09/29 09/30 4-5

13 Figure 4-6. Wind Rose July

14 Figure 4-7. Wind Rose August

15 Figure 4-8. Wind Rose September

16 Appendix A URSA Pad Site Specific Conditional Sampler Garfield County, Colorado Speciated VOC Concentrations A-1

17 Garfield County - URSA Pad Site Specific Conditional Sampler July 2017 Canister 1 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene U 1,3-Butadiene U 1-Butene CE, U 1-Decene U 1-Dodecene U 1-Heptene U 1-Hexene Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane CE, U 2,3-Dimethylpentane U 2,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene Methyl-1-pentene U 2-Methyl-2-butene U 2-Methylheptane U 2-Methylhexane U 2-Methylpentane CE, U 3-Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene Benzene b-pinene U cis-2-butene cis-2-hexene U cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

18 Garfield County - URSA Pad Site Specific Conditional Sampler July 2017 Canister 1 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene CE, U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene U m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene CE, U Toluene trans-2-butene trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

19 Garfield County - URSA Pad Site Specific Conditional Sampler July 2017 Canister 2 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene U 1,3-Butadiene U 1-Butene CE, U 1-Decene U 1-Dodecene U 1-Heptene U 1-Hexene Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane U 2,2-Dimethylbutane U 2,3,4-Trimethylpentane U 2,3-Dimethylbutane CE, U 2,3-Dimethylpentane U 2,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene Methyl-1-pentene U 2-Methyl-2-butene U 2-Methylheptane U 2-Methylhexane U 2-Methylpentane U 3-Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene U Benzene b-pinene U cis-2-butene U cis-2-hexene cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

20 Garfield County - URSA Pad Site Specific Conditional Sampler July 2017 Canister 2 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene U m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane U n-octane n-pentane n-propylbenzene n-tridecane n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene CE, U Toluene trans-2-butene trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

21 Garfield County - URSA Pad Site Specific Conditional Sampler August 2017 Canister 1 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene U 1,3-Butadiene U 1-Butene U, CE 1-Decene U 1-Dodecene U 1-Heptene U 1-Hexene Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene Methyl-1-pentene U 2-Methyl-2-butene Methylheptane U 2-Methylhexane CE, U 2-Methylpentane CE, U 3-Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene U Benzene b-pinene U cis-2-butene cis-2-hexene cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

22 Garfield County - URSA Pad Site Specific Conditional Sampler August 2017 Canister 1 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene U m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane U n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene U Toluene trans-2-butene trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

23 Garfield County - URSA Pad Site Specific Conditional Sampler August 2017 Canister 2 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene U 1,3-Butadiene U 1-Butene CE, U 1-Decene U 1-Dodecene U 1-Heptene U 1-Hexene U 1-Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane U 2,3-Dimethylpentane U 2,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene Methyl-1-pentene U 2-Methyl-2-butene Methylheptane U 2-Methylhexane U 2-Methylpentane U 3-Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene U Benzene b-pinene U cis-2-butene U cis-2-hexene U cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

24 Garfield County - URSA Pad Site Specific Conditional Sampler August 2017 Canister 2 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene U m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene U m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane U n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene CE, U Toluene trans-2-butene trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

25 Garfield County - URSA Pad Site Specific Conditional Sampler September 2017 Canister 1 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene U 1-Butene CE, U 1-Decene U 1-Dodecene U 1-Heptene U 1-Hexene U 1-Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene U 2-Methyl-1-pentene U 2-Methyl-2-butene Methylheptane Methylhexane Methylpentane Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene U Benzene b-pinene U cis-2-butene U cis-2-hexene U cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

26 Garfield County - URSA Pad Site Specific Conditional Sampler September 2017 Canister 1 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene CE, U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene U m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene U m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene U n-tridecane n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene U Toluene trans-2-butene U trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

27 Garfield County - URSA Pad Site Specific Conditional Sampler September 2017 Canister 2 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ,2,4-Trimethylbenzene U 1,3,5-Trimethylbenzene U 1,3-Butadiene U 1-Butene CE, U 1-Decene Dodecene U 1-Heptene U 1-Hexene Nonene Octene Pentene Tridecene U 1-Undecene U 2,2,3-Trimethylpentane U 2,2,4-Trimethylpentane CE, U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane ,3-Dimethylpentane U 2,4-Dimethylpentane Ethyl-1-butene U 2-Methyl-1-butene Methyl-1-pentene U 2-Methyl-2-butene Methylheptane U 2-Methylhexane U 2-Methylpentane CE, U 3-Methyl-1-butene U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene U Acetylene a-pinene U Benzene b-pinene U cis-2-butene cis-2-hexene U cis-2-pentene U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

28 Garfield County - URSA Pad Site Specific Conditional Sampler September 2017 Canister 2 Detected Compound Concentration (ppbv) Comments Cyclopentane U Cyclopentene U Ethane Ethylbenzene Ethylene Isobutane Isobutylene CE, U Isopentane CE, U Isoprene Isopropylbenzene U m-diethylbenzene U Methylcyclohexane Methylcyclopentane m-ethyltoluene U m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene U n-tridecane U n-undecane o-ethyltoluene U o-xylene p-diethylbenzene U p-ethyltoluene U Propane Propylene Propyne U Styrene U Toluene trans-2-butene U trans-2-hexene U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit