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

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FINAL Phase IB Underwater Archaeological Resources Report for Onondaga Lake Superfund Site Archaeological data recovery without any excavation is feasible and will yield potentially significant information from the exposed portions of A1/A2 (Salina Pier), A4-1 (Dump Scow), A53 (Canal Boat), A12 (Derrick Lighter Spud Barge) and A45 (Concrete breakwater). Photographic documentation of A7 (Pilings) will be implemented in accordance with the National Register of Historic Places Photo Policy (http://www.nps.gov/nr/publications/guidance/Photo_Policy_final.pdf) and will be sufficient to document this architectural feature. Anomalies A35 (unknown vessel type), A4-2 (dump scow), A38 (Iron Pier Marine Infrastructure), A55 (canal scow), and A73 (bulkhead) are largely buried, and have little research potential without significant excavation. Additionally, no further work is recommended for the three rock piles A34, A75, and A76 because they appear to lack intentional design and have limited research potential. Data recovery on A1/A2, A4-1, A12, A45, and A53 would include scale drawings and underwater video and photography. Because of the environmental concerns regarding archaeological excavation, only the exposed remains will be subject to data recovery. 99
FINAL Phase IB Underwater Archaeological Resources Report for Onondaga Lake Superfund Site RECOMMEND NO FURTHER WORK Anomaly 5: Isolated Debris Anomaly 5 Summary Table Anomaly Identification Modern Isolated Debris Remedial Impact Dredge and Cap NRHP Eligibility Unevaluated Recommendation Anomaly Dataset Side Scan (2005) 2-6, 9-16 Magnetometer (2005) 625, 248, 678, 275 Side Scan (2010) 6/5/10 Sector Scan (2010) 6/7/10 ROV Video Footage (2010) 6/10/10 Diver Observations No Diver Videography No Maps/Charts No Aerial Imagery No Historic Accounts No Research Results Anomaly A5 is a collection of small sonar and magnetometer targets that was selected for investigation based upon its offshore proximity to the former location of Geddes Pier. The anomaly area was investigated with sector scan sonar, side scan sonar, and the ROV. All of these methodologies were hampered by dense aquatic vegetation in the research area. Additional consultation with Parsons’ staff revealed that the acoustic anomaly located by CRE in 2005 was buoyant piping associated with water monitoring activities (Figure 69). The limited data from the inspection and the low intensity distantly distributed sonar and magnetometer anomalies from the 2005 CRE fieldwork suggest that the anomaly sources are isolated modern debris (Figure 70 and Figure 71). Map analysis also suggests that this location is too far out into the lake to be the remnants of Geddes Pier. Recommendations LCMM recommends no further work for A5. Figure 69. A5 sonar images showing linear acoustic anomalies which were identified as piping associated with water monitoring (courtesy CRE). 100
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