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Sludge Graphs



Note: these graphs were prepared from various sources as acknowledged
on each individual scan


Pennsylvania Wastes Imports, 1990-1997, by type
from PDEP data, summarized and graphed by BLO, Feb.2001


Pennsylvania Wastes Imports, 1997, by type
from PDEP data, summarized and graphed by BLO, Feb.2001


...Percentage of sludge exports to PA, 1996


...Sludge exports to PA, 1990 - 1996


...Total sludge exports to PA, 1990 - 1996


...Metals in U.S. sludges
..........(means as % of EPA 503 "EQ" standard)


...Pollutant Limits in USEPA Part 503 Regulations


...International Sludge Standards


...Explanatory Notes accompanying above Table
..........of International Sludge Standards


... Comparison of sludge standards
..........US EPA EQ versus Dutch sludges
............(Example: EPA allows land application of sludges
............ containing 20 times the concentration of Copper [CU] allowed
............ for sludges applied in the Netherlands)



...Response of soil and herbage in 1986
..........to application of sludge in 1971
..........based on letter by David Purves,in Nature, Vol.346, 1990
............(please note that this deals with the relative percentage uptake, not the actual %



first version: October 20, 1997; latest version: May 27, 1998; reorganized: January 7,14/ February 27, 1999, latest February 15, 2001..BLO
file name= http://members.tripod.com/~PA_Sludge/html/sludge_graphs.html



to return to PA Sludge Index Page or to go to Ben Oostdam's Home Page