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m <br /> F, • <br /> Before the Storm <br /> PRETREATING AND PREWETTING SALT AND SAND <br /> Dry material bounces or blows off the road, so everyone should If must use <br /> be either pretreating or prewetting dry material. Liquids also dry material, follow • <br /> increase salt's effectiveness by jump - starting the melting pro- best practices to <br /> cess. Depending on the liquid used, it can lower salt's effective educe ounce <br /> and scatter <br /> working temperature. a <br /> Because pretreating and prewetting cause material to stick to <br /> the road, 20 to 30 percent less material is used — saving money <br /> and reducing environmental impacts. <br /> Guidelines for pretreating >cgs <br /> Pretreating is mixing a liquid into the stockpile of salt or sand <br /> before it is applied. Unlike prewetting, it does not require Chemicals o <br /> equipment changes and requires no new capital investment leaching from <br /> for equipment. You can also switch from dry application to a stockpile into <br /> wet application immediately —just turn down the application groundwater is a <br /> rate. common problem. <br /> Salt stockpile <br /> • Treat the salt stockpile with a liquid deicing chemical. It <br /> may be purchased pretreated or mixed on site by the ven- C <br /> dor. <br /> • When treating the stockpile at the shop, apply at 6 to 10 <br /> gallons /ton. <br /> • Because leach risk at a stockpile is increased, store it cov- <br /> ered on an impervious pad. aa <br /> s <br /> Sand stockpile <br /> • Pretreat the stockpile to keep it flowable. <br /> • Apply to stockpile at 4 to 6 gallons of salt brine /ton sand. <br /> o <br /> • Store the stockpile under cover. d <br /> as <br /> �d <br /> a <br /> a <br /> g. CD <br /> sa <br /> m <br /> 0 <br /> CD <br /> 7 <br /> m <br /> 58 <br />