maps showing what's been tested and what's been found are in the SHIP
Toxins Database: : http://ship.no-ip.org
A wide variety
of historic maps of Ithaca and Tompkins County are available from the
GIS site. In particular, the 1873
"Birds-Eye" views of Ithaca show how slowly development of South
on the GIS data have recently been crafted by Ian C. Toevs, then a graduate
student at Cornell. These include:
- the housing parcels in the "area
of interest" showing the potential extent of contamination
- the area's utilities:
sanitary and storm sewer lines, major water lines, and primary gas mains.
(It's quite possible that the excavations needed to install these lines
have left "preferential pathways" for the movement of toxins
through the top soil layer of the ground.)
- some of the area's "exterior" testing points: the soil vapor
and the location of groundwater monitoring wells.
- the geology
of the lower South Hill area, showing "joint sets" and where
the lines for the "Electrical Resistivity" tests ran.
geology of South Hill presents many problems to fully understand.
The underlying rock is generally classified as being four zones
(A-zone, B-zone, C-zone, and D-zone) and much work has been done
to identify both the geological features (fractures, bedding planes)
and the man-made features (wells, drain pipes, sewer lines, etc.)
rounds of Electrical Resistivity tests, exploratory drilling, attempts
at using ground-penetrating radar, and considerable analysis, some
theories have emerged. "Figure
9" of the Supplemental Remedial Investigation Report shows
four "possible fracture trends", running roughly from
the southeast down the hill to the northwest. These are shown as
dashed lines with a yellow highlight on the WSP figure. The map
to the right represents an attempt to superimpose those "possible
fracture trends" on the "Trichloroethene
Presence" map available in the SHIP
Toxic Chemical Database. Given the levels of toxins that have
been reported at the locations on the EPT site where these "trends"
seem to originate, it is not surprising that high levels of toxins
have been found in the ground in the neighborhood downhill along
these trend lines.
see the above map as a PDF
To see the above
map as a JPG
Other maps of interest, in roughly chronological order:
map of the Turner properties, by K.F. Crandall
Fire" map of Morse Chain site, showing many of the presumed functions
of the plant areas: Small
Chain Drawing showing the water discharge "outfalls" from
map provided by Emerson's Consultants, Environmental Strategies Consultants
Layout and Vadose Zone Sampling Locations" map provided by ESC.
Monitoring Well Locations" map provided by ESC.
Resistivity Survey map showing ERS lines relative to homes in Indoor
Air Study, provided by ESC.
Assessment Results" and "Plant Indoor Air Sampling Program"
maps, provided by ESC as part of the Onsite
Assessment released on December 13, 2005 by ESC.
prepared by the NYS Department of Health for the Jan. 25, 2006 Public
- Winter 2005/2006 TCE Sub-Slab Results
2005/2006 PCE Sub-Slab Results
of "Soil Vapor
Sampling Results - NCR Sewer Line", released Jan. 26, 2006 (the
day after the Public Meeting) by ESC.
of R&D Building
Basement and First Floor Indoor Air Sample Locations, released March
3, 2006 by ESC.