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Regular City Council Meeting Monday,February 24, 2014 Page 17 and meant as an additive to salt treatments. Mr. Schwartz advised that over the last few weeks, staff had resorted to mixing that material with sand; and there may come a time in the next few weeks when they would be completely out of those materials and having to use pure sand for grit. Mr. Schwartz advised that his intent was to alert the City Council to what is and may become a much more difficult situation. Mr. Schwartz noted that,just this past week's event of rain in the afternoon turn- ing into snow right before rush hour, along with several other events experienced this season, staff had to make a guess in how best to treat roadways since it only had one opportunity to do so based on the availability of materials and timing, as well as staffing levels. Mr. Schwartz noted the need to time the process correctly to move the most snow before the major temperature drop; advising that crews went out at 10:00 p.m. after having worked most of the day,with some street crew members going home at 1:30 p.m. to get some sleep and preserve hours; and then plowing all night into the early part of the following day. Mr. Schwartz opined that he found the results fairly decent in accomplishing what they could; even though there was evidence of some ice build-up on busier roads. Mr. Schwartz noted that other agencies went out at different times, and were also dealing with the same shortage of ice control materials. Mr. Schwartz noted that this type of event provided a clear view of the difference in sun on asphalt versus concrete re- sponse. Mr. Schwartz noted that, with very little melting due to the cold tempera- tures, while crews were hauling snow from cul-de-sacs, there was no room left for any additional snow storage. In addition, Mr. Schwartz highlighted the concerns he raised in the RCA dated February 24, 2014, regarding the City's experience with frozen water services since the end of January and the number reported, including additional customers over the weekend; and advised that currently there were twenty-two customers without water in the City; thirty-two services back after City crews assisted in get- ting those services back on and water flowing. However, Mr. Schwartz advised that nine of the twenty-two customers without water were unsuccessful in at- tempting the hot water melting method. While this is a statewide problem, Mr. Schwartz noted that frost depths were down to 7' and he expected them to go deeper based on the forecast over the next few weeks. Mr. Schwartz advised that average high temperatures during this time of year were typically at 32 degrees,but over the next few nights predictions were for ten below zero degree nights, which will drive the frost deeper, and he antici- pated getting more calls. Mr. Schwartz advised that to-date they hadn't had any public water mains freeze, but the potential was there especially on dead end lines. Mr. Schwartz noted that some of the freeze-ups in private service lines were where residents were out of town, but other problems were also being found with the majority of freeze-ups occurring under streets with longer services or driveways with grade changes. In Roseville, Mr. Schwartz advised that water