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Benzene Fenceline Monitoring;Lessons Learned for Ongoing Compliance
August 8, 2018
Jason Robles, President
Presentation Topics• EPA Alternative Test Method ALT-122• Refinery Sector Proposed Amendments
March 2018• Refinery “X” Pilot Study Results
- Laboratory Comparison- Data Trends- Obstacles & Solutions
• Benzene Method Calculation• Field Duplicates and Field Blanks Required
- Original: 2 Field Blanks plus 1 Field Duplicate for every 10 Field Samples
- Updated: 1 Field Blank and 1 Field Duplicate for
Signed by EPA March 19, 2018• As a result of 3 separate petitions filed by AFPM/API (2)
& Earthjustice (1)• Addresses several sections of the RSR – Fenceline
Monitoring Specific:- ‘Known VOC’ defined in relation to additional monitors at
50m- Corrective Action clarification- Reporting Timing Requirements- Laboratory calculation/reporting of duplicates
RSR Proposed Amendments
Pilot Sampling Period: 09/19/17 - 12/26/177 Sampling Periods
Located in Northeast United States3 different laboratories for data comparison• Lab A: 14 Field Samples, 2 Field Blanks & 2 Duplicates• Lab B: 4 Field Samples• Lab C: 4 Field SamplesSame sampling media for each laboratory
Refinery “X” Pilot Study
Pilot Study: Refinery “X”
• Lab A: 126 Samples
• Lab B: 28 Samples
• Lab C: 16 Samples
170 Total Samples
Pilot Study: Lab Data
• Refiner analyzed results using Tukey-Kramer Method- All labs performed within acceptable level of one
another- Lab A statistically most accurate
• Average report TAT varied
Pilot Study: Lab Comparison
• Lab C closed after 4 sample periods
0.73 0.86
1.20
3.80
2.40
0.88
1.20 1.40
2.80
0.80
1.40
1.20
3.40
0.84
1.50
1.90
1.50
1.40
2.00
1.70
5.10
0.19
2.00 2.10
6.00
1.80
1.10
1.00
0.78 0.90
1.32
3.86
2.04
0.78
1.82
1.32
2.00
0.73
1.45
1.01
3.44
0.86
1.44
1.79
1.61 1.64
2.33
1.81
4.28
1.38 1.47
1.87
4.87
1.61
1.33
0.92
0.90 1.06
1.68
4.84
2.82
0.88
1.34
1.60
2.70
0.96
1.78
1.30
3.37
0.82
1.44
1.85
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Benzen
e ug
/m3
Shelters
Side by Side Laboratory Results 09/19/17‐12/26/17
Lab ALab BLab C
Round 1 Round 2 Round 3 Round 4 Round 5 Round 6 Round 7
Pilot Study: Lab Comparison
Lab A: 18 Samples per roundLab B: 4 Samples per roundLab C: 4 Samples round
Pilot Study: Lab Comparison
Pilot Study: Data Trends
Possible cause of Shelter 01
Benzene Level Increase?
Directional VOC Accumulation Cycle 7
Shelter 01 Data:Round 5: 1.50 ug/m3Round 6: 5.10 ug/m3Round 7: 6.00 ug/m3
Pilot Study: Data Trends
0102
13 0314
Pilot Study: Data Trends
Obstacle: Staying organized while using 3 labsSolution: Color coding
Pilot Study: Obstacles & Solutions
Obstacle: Error-free Field Test Data Sheet
Pilot Study: Obstacles & Solutions
Solution: Mobile Field Deployment & Collection
• Met Data, Time & Date Stamp collected automatically
• Information transmitted to Laboratory via ‘the cloud’
• Laboratory downloads all Field Test Data Sheet information
Limited handwriting and data entry greatly reduces time spent
and errors
Pilot Study: Obstacles & Solutions
6732 Mayard RoadHouston, Texas 77041
Phone +1 (713) 983-0800Fax +1 (713) [email protected]
www.325Monitoring.com
Questions?