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. , , <br /> . . <br /> JIL... .... ....... <br /> HARVESTORE. <br /> SYSTEMS <br /> A.0.SMITH HARVESTORE PRODUCTS,INC. <br /> 345 HARVESTORE DRIVE,DE KALB,IL 60115 <br /> (815)756-1551 <br /> December 5, 1989 <br /> Louis Breunig <br /> 8667 Highway V <br /> Sauk City, WI 53583 <br /> Dear Mr. Bruenig: <br /> With reference to our phone conversation of Tuesday, Novem- <br /> ber 28th, 1989 , it is my understanding that you wish to test <br /> to determine if the shocks from a blasting operation in a <br /> gravel pit near your property are affecting the sealed <br /> joints of your Harvestore (R) structures. I further under- <br /> stand that it is your intention to have the Harvestore <br /> dealer from Edgerton perform a pressure test/reseal if/as <br /> required of your three structures and later allow blasting <br /> at the gravel pit, and following that, a retest of the <br /> Harvestore structures to see if leaks are produced by the <br /> blasting. You requested that we provide to you a written <br /> recommendation for the time lapse period that should be j <br /> provided between the time of pressure test/reseal and the <br /> time that blasting is allowed to occur, and further the time <br /> lapse period between the occurance of blasting and the test <br /> for leaks. <br /> The time lapse between resealing and blasting is going to be <br /> a function of the ambient temperature for that period. It <br /> is our recommendation that a minimum of twenty-four hours be <br /> given for this period up to a maximum of three days, again <br /> depending on ambient temperature for this period. The time <br /> of wait following the blast for a retest is really not a <br /> function of time. If a leak develops as a result of the <br /> blast it would be evident almost immediately after the blast <br /> as well as it would be evident one, two, three or four weeks <br /> following the blast so the time wait after the blast is some- <br /> , what nebulous. Further to the above, I would like to point <br /> � ' out that pressure testing is typically done at temperatures <br /> 1 `1 above freezing. If the temperature is low enough to freeze <br /> he soap solution that would be sprayed on the joints to <br /> detect leaks, then pressure testing may be inconclusive. <br /> A <br /> SUBSIDIARY <br /> OF A 0 SMITH <br /> CORPORATION <br />