Document jgJby9pBx0xDXMboJpvOBXgX5

ABD00315639 Distribution Interoffice Communication From; Date: Subject: Brett Bass October 29, 1986 VCM LEAK DETECTION SURVEY A VIS1A Attached are the results of the completed 1986 Comprehensive VCM Leak Detection Survey. A total of eleven (11) leaks were detected and repaired. Every connection, flange, valve, etc. on the at tached isometric drawings was checked with a portable hydrocarbon detector (HNU). The points with readings above 50ppm with the probe as close to the equipment as possible were considered leaks and were noted. A tabulated list of all the VCM leaks reading over 50ppm is attached. A bar chart showing a decrease in the number of detected leaks over the past seven years is Included on the following page. If there are any questions or comments, please advise. i. 6. #3tL,ss E. B. Bass PROCESS ENGINEER J. B, Popp PROCESS ENGINEER /beb cc: JF, JWW, DWH, VEM, CWT, RAF, MLN, TFL, JGC