Phase 1B Underwater Archaeological Report for the Onondaga ...

FINAL
Phase IB Underwater Archaeological Resources Report for Onondaga Lake Superfund Site
Anomaly 48: Pipeline
Anomaly 48 Summary Table
Anomaly Location
Anomaly Identification Pipeline
Remedial Impact
Dredge and Cap
NRHP Eligibility
Unevaluated
Recommendation
Anomaly Dataset
Side Scan (2005)
No
Magnetometer (2005) 898, 897, 872, 406, 403
Side Scan (2010) 6/2 and 3/10
Sector Scan (2010)
No
ROV (2010) 6/11/10
Diver Observations No
Diver Videography
No
Maps/Charts
No
Aerial Imagery
No
Historic Accounts
No
Research Results
A48 is a linear magnetic anomaly located in 2005 with a signature similar to A47 (Figure 86). The source
of the anomaly was searched for using side scan sonar and visually from the survey vessel. The source
could not be located, however, A48’s proximity and similarity to the pipeline at A47, strongly suggest
that A48 is also a buried iron pipeline.
Figure 86. Magnetic intensity map of Onondaga Lake showing A48.
Recommendations
LCMM recommends no further work for A48.
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