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J 1 <br /> ' EXHIBIT "An <br /> Materials that will be disposed from the laboratories into the <br /> separate chemical septic system. <br /> On an annual basis we use and dispose of the following chemicals. All <br /> of these chemicals will be diluted with water before disposal using <br /> the listed dilution factor. <br /> Chemical Amount 'rper year Dilution factor <br /> formalin (37% formaldehyde) 110 gal 1:20-1: 100 <br /> ethanol (95%) 55 gal 1:3-1:5 <br /> acetic acid * 50 ml 20: 1 <br /> hydrochloric acid * 1 gal 20: 1 <br /> nitric acid * 0.5 gal 20: 1 <br /> carbolic acid (phenol) * less than 1 gram more than 100: 1 <br /> chromium sulfate * less than 1 gram more than 100: 1 <br /> isopropyl alcohol * 1 gal 20: 1 <br /> If necessary, those items denoted with an * could be collected and <br /> disposed of separately at the DFG's Water Pollution Control Laboratory <br /> in Rancho Cordova. Also the project that uses these chemicals may not <br /> be doing this work after this year. <br /> The formalin is diluted to either a 5% or 10% solution before it is <br /> used. The ethanol is used full strength in most cases and diluted to <br /> 70% in other cases. These materials are used to preserve biological <br /> specimens and at present there are no reasonable alternatives. When <br /> the material is disposed of in the laboratory, it is done so by <br /> extensive rinsing of the biological samples (this includes both the <br /> sample specimens and a large quantity of debris) and subsequent <br /> flushing of the drains. A minimal amount of the biological samples <br /> will be disposed of in the special septic system as a fine material <br /> that is inadvertently washed out of the sorting screen. <br /> SUBMITTED BY STOCKTON OFFICE <br /> CALIFORNIA FISH & GAME <br /> TO S . S . MOORE <br /> FEBRUARY 13th. 1991 <br />