T0777 Attachment 5 - Spreading Services Guide.pdf

This document is the Solid Chemical Application Guidelines for an Effective Anti-icing Program issued by the New Jersey Department of Transportation. It is adapted from the Manual of Practice for an Effective Anti-Icing Program prepared by the Federal Highway Administration (FHWA), US Army Cold Regions Research and Engineering Laboratory, and the Corps of Engineers in 1996. The guidelines establish operational standards for the winter maintenance program administered by the New Jersey Department of Transportation.

The document provides operational guidance for applying solid de-icing chemicals to roadways under various winter weather conditions, including light snow storms, moderate or heavy snow storms, frost or black ice conditions, freezing rain storms, and sleet storms. The guidelines specify maintenance actions, chemical spread rates measured in pounds per lane-mile, and application protocols based on pavement temperature ranges and weather trends. Chemical spread rates vary by conditions, ranging from 150 to 400 pounds per lane-mile for initial operations and 150 to 350 pounds per lane-mile for subsequent operations. The document establishes no-application thresholds below 15°F and emphasizes pre-wetting solid chemicals and strategic timing of applications ahead of traffic rush periods. Recommendations include plowing before chemical applications to remove excess snow, slush, or ice, and monitoring pavement temperature and precipitation closely to adjust treatment frequency and rates accordingly.