Result: Extremely Large “Co‐Mingled” Plumes • Over 130 sq. mi. • 4 major aquifers • 8 municipal systems & >1,800 private wells • Much larger than predicted by models • PFBA most widespread  • More PFBA in source areas • More mobile • Movement of PFAS affected by several factors m, DEPARTMENT OF HEALTH Phone: 651-201-4897 or 1-800-657-3908 PFBA - All Aquifers - PFBA exceeds HAL (>70ppb) PFBA 50-75% HAL (3.5-5.25ppb) PFBA <10% HAL (0.007-0 .7ppb) - PFBA exceeds HAL (7-70ppb) - PFBA 25-50% HAL ( 1.75-3.5ppb) PFBA not detected PFBA 75-100% HAL (5.25-7ppb) - PFBA 10-25% HAL (0.7- 1.75ppb) city 12