Document DdBg8mL27VbQn8LY3dgnyoB5a

r PLAINTIFF'S EXHIBIT EXX 157 smtassvm ooveexng ado sosvsr whk to mb nan bt capTw *wy 1. On hm days the wind is blowingin such a direction that any air pollution which sightft ft ft ft ft ft *be iAn cer&taAin lafat rg_ e area_ s* .adft fjtacenftt tAo theft ft p. ^lanftt wouMldft fht ave ta o coae from Esso* As an exaeple* when the wind is blowing from the west* the people directly east of $he central mechanical building and chat of the area between this building and the sain office would be receiving most of the pollutants (if any) from Esso* Again* if the wind is blowing from the southwest* the people east of the alcohol plants would be the sane* The plan would be to determine the various pollutants In a straight line from one of these locations on a daywhaa toe wind is hlntfng from the pre determined significant direction* These analyses would be Bade at 3 or 4 distances from toe plant and tabulated so as to indicate toe location of toe ---Hum concentrations of pollutants* 2 Having made the above analyses for varying wind velocities and covering most of the significant sections of toe plant* a location could be decided upon to make an hourly check for 6 hours or longer if it appears necessary* 3* There are times when toe wind, is in such a direction and of such velocity that a number of planta effluents beoome additive. As an exaapla, a strong wind from toe north northwest blends the air effluents from Ideal* Consolidated Chemical* Kaiser* Ethyl* with acme Esso units such as Knox field Tank field* Dewaxing Plants and toe Catalytic Cracking units* It would seem desirable to do scam work at these times to determine toe --***--"" ground level concentrations and toe distance they occur from toe refinery with data to Indicate toe concentrations of any compounds where Esso might contribute* 4* Should we have complaints oovering specific conditions such as HjS odors* gasoline odors or lachryuators* samples might be obtained to indicate toe part (if any). Esso is contributing* J. E. OTHER JEHUlenUL Oil Conservation Dept November 21* 1955