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= https://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
...Percentage of sludge
exports
to
PA, 1996