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~Val~E~c. , ~ <br /> NVE,~TMENT CA~TINGS <br />~ ~ ~ ~., ANOKA, MINNESOTA §$303 612/427-3181 <br /> <br />I <br />I <br />! <br /> <br /> I <br /> I <br />:i <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> <br />Item 3. <br /> <br />PH monitoring of drainfield water. <br /> <br />Since our meeting of the 22n~, we have been mon[tocil~g <br /> <br />dig. charges ourselves using an electronic PH meter, sever~] <br /> <br />day. The ~'nitial water grab samples had a rather acidic reading, <br /> <br />to the fact that on that particular day we were hand washinq a number <br />of water soluble parts, using a dilute mixture of muratic acid. This <br />is a rather rare procedure, and in an attempt to obtain a trend of <br />readings, we have recorded the following data. (waters~,..p-~ ~s are t~ken <br />from the wax room, shell room, and caustic rinse tank. The caustic tank <br />is emptied only periodically, after being neutralized). <br /> <br />Date read Wax Room Shell Room Composite <br />7-24-85 9:00.A.M. 8.6 7.4 7.7 <br />7-24-85 12:00 P.M. 7.4 7.9 7.5 <br />7-24-85 6:00 P.M. 7.4 8.1 7.7 <br />7-25-85 9:00 A.M. 8.2 8.0 ~.~ <br />7-25-85 12:00 P.M. 7.4 7..7 7.~ <br />7-25-85 6:00 P.M. 7.6 7.7 7.7 <br /> <br />The slight alkalinity of the readings, we believe, is <br /> <br />(silica) used in the shell room. <br /> <br />Item ,1. Response to D,~:.~tty clause. <br /> We would object to .7our initial (':laJ~ [ vic~].'~t: '~ <br /> basis of what we feel to be fair and honest <br /> Based upon the laboratory analyses of .3,~r '...~ar~k: ' .... <br /> identified hazardous wastes, two cf tb,?m <br /> <br /> <br />