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2050 E.Fremont Street Unit B <br /> • Stockton.Ca 95205 <br /> : 209-465-8200 <br /> 209-465-8203 fax <br /> dh i bler(&ari estek.com <br /> Aries Tek Ltd <br /> December 17,2010 <br /> Boral Roofing <br /> 9508 S.Harlan Road <br /> French Camp,CA 95231 <br /> Attention: Carlos Arellano <br /> Subject:Liquid overfill protection <br /> Dear Carlos: <br /> We propose to install liquid overfill protection in three tanks at your plants.We would include at each plant the <br /> following equipment: <br /> 1. Three pressure transducers with digital readout and 2 alarm outputs.The readout would show the <br /> depth in each tank. The alarms can be set to activate at any depth.The readouts would be <br /> mounted in a NEMA 12 steel panel. <br /> 2. We would also include three different lights that would activate at set level as a warning the <br /> tanks were getting full.The second alarm would shutoff a pneumatic fill valve.We would supply <br /> 2 two inch and 1 four inch pneumatic butterfly valves as shutoffs. <br /> 3. The pressure transducers would be mounted on a stainless steel pipe that would be inserted in the <br /> tank from the top.This will prevent plugging of the transducer.The pipes could also be blown <br /> out to make sure they are not plugged. <br /> The cost of the above equipment is$7950.00 per plant or three tanks systems plus tax. <br /> The cost of installation of the above systems would be for mechanical$3500.00 per plant. <br /> The cost of the electrical installation for the above systems is$3600.00 per plant. <br /> Should you have any questions for the above please let me know? <br /> Sincerely, <br /> Dan Hibler P.E. <br /> . . . . . . . . . . . . . . . . . . . . <br />