T0777 Attachment 5 - Spreading Services Guide.pdf

This document is the Solid Chemical Application Guidelines for an Effective Anti-icing Program developed by the New Jersey Department of Transportation for its Winter Maintenance Program. The guidelines are based on materials adapted from the Manual of Practice for an Effective Anti-Icing Program originally prepared by the Federal Highway Administration (FHWA) and the U.S. Army Cold Regions Research and Engineering Laboratory, Corps of Engineers in 1996.

The document provides operational guidance for applying solid chemical de-icing agents across five distinct weather events: light snow storms, moderate or heavy snow storms, frost or black ice conditions, freezing rain storms, and sleet storms. For each weather event, the guidelines specify chemical application rates measured in pounds per lane-mile, maintenance actions, and operational procedures based on pavement temperature ranges and weather trends. Chemical spread rates vary from 150 to 350 pounds per lane-mile for initial operations and 150 to 350 pounds per lane-mile for subsequent operations, with rates adjusted based on temperature, precipitation intensity, and traffic conditions. The guidelines recommend pre-wetted solid chemical applications in most scenarios and specify that plowing should occur before chemical application to remove excess snow, slush, or ice. All recommendations include detailed monitoring requirements and contingencies for adjusting application frequency and rates based on changing pavement conditions and environmental factors.