aN ‘ day sample should be a 3 hour or better sample encompassing the general mill complex (Dryer and concentrator excluded). This would give a background count. 5. BIMONTHLY SURVEY Depending upon the type of monitoring the eoverament requires to conform to the standard, the present bimonthly survey should either be continued or replaced by a survey consisting of time weighted averages on 8 high exposure job classifications. The present standard of 5 fibres/cc 8 hour T.W.A. for occupational exposure warrants time weighted average sampling. However, Sam Elias, Senior Environmental Inspector, feels the weighted average of sampling locations is more acceptable (see page 26 "Miscellaneous"). 6. RECORDING AND REPORTING OF RESULTS (INTERNAL) The recording of conditions at the time of sampling is extremely important if we are to interpret any results to get any accurate assessment of the environmental problem. A sample data sheet has been designed so that all pertinent information can be recorded at the time of sampling. it as recommended that the reporting of results be done according to a grade system as indicated on the bottom right corner of the sample data sheet (page 34). T- EQUIPMENT REQUIREMENTS FOR MEMBRANE FILTER SAMPLING A total of four sampling pumps with accessories will be required to accommodate the above sampling program. We presently have two and two more on order. A conference type microscope projection head should be purchased with increased illumination for training, ease of counting, clarity and comparison counting when required. A second microscope should be considered. The increased amount of use of the microscope for the bimonthly survey, mini-bimonthly survey, research, and test work by the environmental technologist and the local union representative warrant this.