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Biosolids Project

Biosolids Project. Rob Burgholzer Adam Zimmerman Chesapeake Bay Program Feb 22 2006. Discussion Overview. Biosolids, background, project scope Applications and trends Regulations Project progress – EPA and state data. Project Overview.

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Biosolids Project

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  1. Biosolids Project Rob Burgholzer Adam Zimmerman Chesapeake Bay Program Feb 22 2006

  2. Discussion Overview • Biosolids, background, project scope • Applications and trends • Regulations • Project progress – EPA and state data

  3. Project Overview • Biosolids = treated sewage sludge (EPA coined term in 1995) • Capture nutrients from land application of biosolids • 72% of population’s wastewater goes to POTW (1996 EPA estimates) • Expected to be 88% by 2016 • Half of septage ends up at POTW

  4. Biosolids Production – NRC 2002

  5. Applications and Trends • Preliminary estimates of proportion of nutrient load in watershed 1-3% N, 5-8% P (VA 2002) • Nationwide – ~40% of biosolids applied to farmland (.1% of available ag land – USDA 1997) • ~20% composted • 20% incinerated, 17% land filled, 3% land reclamation (EPA)

  6. Regulations • CWA 1972 Section 405 • CWA Part 403, 1978 – pretreatment to prevent intro of pollutants • Largely responsible for improvements in quality • Part 257 1979 • CWA Part 503, 1987, promulgated 1993 • Minimum requirements for land application • Trace elements, pathogens, vector attraction, N agronomic rate • State regs at least as stringent • Ocean Dumping Ban Act of 1988

  7. Progress • EPA Database • Permit Compliance System (PCS) • Major facilities >1 mgd • Doesn’t include location of application • Received data for Region 3 • Requested data for Regions 2 (NY) and 4 (NC and TN)

  8. State Data • MD received • VA have 2 yrs, other years pending • DC pending • DE pending • NY pending • PA paper records • WV paper records

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