Geologic Map of Tumwater
My house lies on the Qgo section:
"Vashon recessional outwash—Recessional and proglacial
stratified, moderately to well-rounded, poorly to moderately
sorted outwash sand and gravel of northern or mixed
northern and Cascade source, locally containing silt and
clay; also contains lacustrine deposits and ice-contact
stratified drift. Some areas mapped as unit Qgo may instead
be advance outwash (unit Qga) because it is difficult to tell
the difference between the two without the presence of an
In other garbage-dump news, a fellow is Tacoma is building condos on the foundations of an old copper/arsenic plant, now a Superfund site.
This is apparently old news, but I only found out today, via Text Message from a Toxic Waste Site on the Stranger.
Recovering viable land from our past mistakes seems like a noble ambition (despite being aimed only at the rich) however the ecological aspects are slightly concerning.
My knowledge of the issue is, admittedly, fairly limited.