3.1 Storm Conditions
All storm conditions are dictated by temperature, the amount of moisture present in the storm, wind speed and duration. The combination of these factors is directly related to the conditions that dictate how a storm will be dealt with. Freezing rain, sleet, wet snow, dry snow, amount of snow, wind conditions, and the time of day all contribute to storm conditions.
3.2 Salt Application
When road conditions necessitate the application of a chemical, salt shall be applied beginning with all Priority I roads as soon as possible. Salt shall be applied at the approximate rate of 500 pounds per lane mile. All salting will be done by truck-mounted hopper or tailgate spreaders. Storm conditions will determine if a second application of salt will be needed, and the decision to re-apply will be made by the supervisor in each district after concurrence with the Director of Public Works or his designee.
3.3 Anti-skid Application
An anti-skid material will be used with the application of salt in a mixture ratio of four parts salt to one part anti-skid. The term anti-skid shall refer to crushed limestone or granite as used by the Pennsylvania Department of Transportation.
3.4 Calcium Chloride Application
Calcium chloride is to be used as a wetting agent on each truckload of salt and anti-skid when temperatures are 20 degrees Fahrenheit or less. The application rate for liquid calcium is 10 gallons per ton.
When snow is predicted to accumulate greater that 2”, all trucks should mount their plow before reporting to the district where assigned. Plowing operations should begin when snow has accumulated more than one inch on the street. Plowing and salting will be done simultaneously. If the storm continues in intensity and snow is falling heavily, plowing will continue on Priority I, but salting should be suspended in order to save material. As long as snow continues to fall, plowing should be concentrated to Priority I roads only, unless directed to go to Priority II roads by the supervisor in charge.
Once the snow stops, plowing is to be done in conjunction with salting on the assigned Priority I, II, and III roads in each district until all roads are complete.
Plowing routes will be established in writing and a list of all routes will be given to each truck driver to use as a reference guide within each district.
3.6 Municipal Parking Lots
The twenty-three plus future additional lots owned and maintained by the Township will be the responsibility of the Public Works Department. The lots, however, will receive a priority lower than the streets and will be salted and plowed as equipment becomes available and storm conditions allow. Lots may be salted as the salting operation continues throughout each district, but under no circumstance should plowing be done in the lots while snow is still falling. Township loaders supplemented by hired loaders will be used to scrape the lots of snow and piles of snow will be placed at various locations throughout each lot for pick up and hauling later. As lots are cleaned of snow,they will be salted. To the extent possible,municipal lots will not be closed for cleaning of snow. It will be the accepted practice to schedule this type of work between the hours of 8:00 PM and 7:00 AM. On-street parking areas will be treated in the same manner as the municipal lots and will be cleaned of snow during scheduled night work operations in the lots.
All pedestrian sidewalks within the municipal owned parking lots and on the property of municipal owned buildings will be the responsibility of the Public Works Department for snow and ice control. By Lower Merion Township Ordinance No. 1092, sidewalks are the responsibility of the abutting property owner and must be cleaned of snow and ice within 30 hours after it stops snowing. Sidewalks will be shoveled and/or salted as needed to provide for safe pedestrian passage in a manner as quickly and efficiently as possible at the completion of each storm. The list of sidewalks that are maintained by the Township is found in Exhibit C. The order in which they are listed is not to be considered a priority list. These walks are not given a particular priority, but will be completed as time and manpower allows within the 30-hour period after a storm.
3.8 Parking Restrictions
During periods of snow when a snow emergency is declared, there will be areas where parking restrictions will exist. The actual section on Snow Emergencies will be discussed with a list of all routes in Section VI of this manual.