T0777 Attachment 5 - Spreading Services Guide.pdf

This document comprises operational guidelines for the New Jersey Department of Transportation's Winter Maintenance Program, specifically addressing solid chemical application procedures for an effective anti-icing program. The guidelines were adapted from the Manual of Practice for an Effective Anti-Icing Program prepared by the Federal Highway Administration and the U.S. Army Cold Regions Research and Engineering Laboratory, Corps of Engineers in 1996. The document serves as a procedural framework for New Jersey transportation maintenance operations during winter weather events.

The document provides detailed operational protocols organized by weather event type and pavement temperature conditions, specifying chemical application rates, maintenance actions, and operational procedures for four distinct scenarios: light snow storms with moderate to heavy snow periods, moderate to heavy snow storms, frost or black ice conditions, freezing rain storms, and sleet storms. Chemical spread rates are prescribed in pounds per lane-mile and vary by temperature range and weather severity, typically ranging from 150 to 400 pounds per lane-mile depending on conditions. The guidelines distinguish between initial operations and subsequent maintenance operations, with recommendations for both solid and pre-wetted solid chemical applications. Operational guidance addresses pavement conditions, traffic volumes, precipitation intensity, and dew point relationships to inform treatment frequency and chemical application adjustments. The document emphasizes timing of applications relative to traffic rush periods, plowing requirements before chemical application, and conditions under which chemical treatment is not recommended, particularly below 15°F when abrasives are preferred.