Chemical analysis report 2.pdf

This document is a Proposed Material Sampling and Analysis Plan for the USCG Cutter Eagle New & Maintenance Dredging Project at New London City Pier in New London, Connecticut, prepared by Coastline Consulting & Development, LLC for Lloyd Engineering, Inc., dated April 3, 2025.

The plan outlines the sediment sampling and laboratory analysis requirements for pre-characterizing approximately 3,700 cubic yards of dredged material proposed for upland disposal. Five representative samples will be collected from four designated stations within the dredge footprint (185 feet long by 123 feet wide, dredged to -17.0 feet MLLW with 2.0 feet overdredge), including one field duplicate. Sampling will employ a vibracore apparatus to collect composite samples from four discrete core locations within each station, with cores processed and homogenized for laboratory analysis. Samples will be maintained in ice-filled coolers and transported to the analytical laboratory within holding times. The required analyses include volatile organics (EPA 8260), semi-volatile organics (8270E), PCBs (8082), pesticides (8081), herbicides (8151), TAL metals without cyanide, total solids, hexavalent chromium, TCLP RCRA8 metals, Connecticut ETPH method, flashpoint, pH, reactivity (cyanide/sulfide), conductivity, soil moisture (ASTM D-2216-10), TOC, ORP, grain size, volatile solids, SPLP chlorides, dioxins/furans, and Proctor density (ASTM D-698). Results will be submitted to three proposed upland disposal facilities (Clean Earth in Claremont, New Jersey; Green Earth Triangle in Griswold, Connecticut; and J.R. Vinagro in Johnston, Rhode Island) for acceptance determination. The dredged material is proposed for upland disposal under Connecticut Department of Energy & Environmental Protection authorization.