M6.0 South Napa Earthquake, 8/24/2014 SEAOC EPEP Experience
September 10, 2014 Jeffrey Hunt, Ph.D., P.E. Chair SEAOC Post-Disaster Performance Observation Committee
Volunteers & Collaborators
• EPEP credentialed
– Fred Turner (Sacramento)
– Brian McDonald (Bay Area)
– Scott Adan (Southern CA)
– Marko Schotanus (Bay Area)
– Jeff Kovach (Sacramento)
– Jeff Hunt (Southern CA) – administrative role
• Others
– EERI
– ATC
September 10, 2014 EPEP - Napa EQ 2
Deployment Email to EPEP volunteers
• Sunday morning sent email with deployment package to newly trained Sacramento Area volunteers (~8 people)
– Jeff Kovach covered two Pods
– Marko also looked at Vallejo station
September 10, 2014 EPEP - Napa EQ 8
Deployment Email to EPEP volunteers
• Sent email with deployment package to Sacramento Area and Bay Area volunteers (~20 people)
– Brian McDonald covered Fire Station #3
– Fred Turner and Scott Adan covered Napa Main St.
September 10, 2014 EPEP - Napa EQ 10
September 9 (+15 days) strongmotioncenter.org
September 10, 2014 EPEP - Napa EQ 12
Broadway & Sereno PGA = 0.47g, PGV = 17 cm/s
Mare Island PGA = 0.37g, PGV = 20 cm/s
1g PGA…questions on validity
Napa Fire Station #3 (PGA=0.43g, PGV=93cm/s) USGS - NSMP Station 1765
September 10, 2014 EPEP - Napa EQ 15
Napa Fire Station #3 (PGA=0.43g, PGV=93cm/s) USGS - NSMP Station 1765
September 10, 2014 EPEP - Napa EQ 16
Napa Fire Station #3 (PGA=0.43g, PGV=93cm/s) USGS - NSMP Station 1765
September 10, 2014 EPEP - Napa EQ 17
Vallejo - Hwy 37/Napa River E Geo. Array (PGA=0.20g, PGV=18cm/s) CGS - CSMIP Station 68310
September 10, 2014 EPEP - Napa EQ 19
• 23 apartment units • 79 single family homes • Wood frame construction (W1, W1A) • No visible structural damage • No visible nonstructural damage • No SAP placards • Circa 1960s-1970s
Napa Valley College (PGA=0.38g, PGV=55cm/s) CGS - CSMIP Station 68150
September 10, 2014 EPEP - Napa EQ 20
• College campus • Mixed building types • Minor stucco cracking • Observed nonstructural/content damage • No SAP placards • Circa 1970s and newer
Napa Main St. Pod (PGA=0.61g, PGV=47cm/s) USGS - NCSN Station N016
September 10, 2014 EPEP - Napa EQ 26
Napa Main St. Pod (PGA=0.61g, PGV=47cm/s) USGS - NCSN Station N016
September 10, 2014 EPEP - Napa EQ 33
Lessons Learned
• Check Shakemap first • Cross reference Shakemap with map of known stations in
affected area • Deploy to Pods around stations with motions that
– (1) exceed PGA, PGV thresholds as shown on strongmotioncenter.org – (2) likely will exceed PGA, PGV thresholds based on Shakemaps
• Add retrofit column to short form (RURM) • Add vacant “Y” or “N” column • Nonstructural vs. building content damage • Train more EPEP volunteers! • Keep roster contact information current • Develop & strengthen ties with other organizations (EERI,
ATC, PEER, etc.)
September 10, 2014 EPEP - Napa EQ 34
September 10, 2014 EPEP - Napa EQ 35
Stations with recordings All Stations on strongmotioncenter.org
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