Summary

This document is a Solid Chemical Application Guidelines manual prepared by the New Jersey Department of Transportation to establish standardized protocols for anti-icing and de-icing programs during winter maintenance operations. The guidelines are based on procedures adapted from the Federal Highway Administration's Manual of Practice for an Effective Anti-Icing Program, originally developed by the US Army Cold Regions Research and Engineering Laboratory, Corps of Engineers in 1996.

The document provides operational protocols for solid chemical application across five distinct weather event scenarios: 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 application rates in pounds per lane-mile, maintenance actions, and chemical spread rates for both initial and subsequent operations, organized by pavement temperature ranges. Application rates vary significantly based on conditions, ranging from no application above 32°F with steady or rising temperatures to rates of 150-400 lb/lane-mi for temperatures between 15°F and 32°F. Key operational parameters include pre-wetted solid chemical applications, timing of treatments relative to traffic rush periods, monitoring requirements, and recommendations to adjust application rates based on precipitation intensity and pavement conditions. The guidelines emphasize that chemical applications should prevent deterioration and bonded snow development, with plowing conducted before chemical application to ensure proper coverage of wet, slushy, or lightly snow-covered pavements.