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Prepared By J.R. SIMPLOT COMPANY Procedure Page M. Rosa Minerals & Chemicals Division A-13 2 Approved By Lathrop , California Date Rev, No. M. Rosa STANDARD LABORATORY OPERATING .PROCEDURES 5/10/2010 2 Volume A General Operations A-13 Laboratory Liquids Handling and Recycling Use appropriated PPE and safety precautions Appropriate PPE includes long sleeved lab coat, vinyl apron (optional), neoprene chemical gloves, goggles, face shield, and if you are going out into the plant, the face shield must fit onto your hard hat and earplugs are required. Recycling of Laboratory Samples 1. Dry samples go into appropriate drum outside of QC lab against south wall. 2. Phos acid sample bottles are to be emptied into a 1 gallon plastic container which is recycled into the phos acid sump. 3. The phos acid sample bottles are then soaked with hot water until the solids on the bottom of the container can be brushed into solution and then recycled with the phos acid. 4. Sulfuric acid sample bottles (98% & 93%) are to be emptied into a 2.5 It glass bottle. This bottle is kept in a polyethylene bottle carrier. When full, the container is taken to the acid plant for recycling by the acid plant operator. 5. 50% and lower concentrations of sulfuric acid should be kept in a 2.5 It glass bottle to be used the neutralizing lab solutions. 6. The first three sample rinses of the sulfuric acid bottles and caps should be put into a container for neutralization in the lab. The bottles and caps should then be soaked in a dilute sodium bicarbonate solution (1-2%) for a few minutes. Rinse three times with both tap water and then with DI water. 7. Ammonium Hydoxide (aqua) samples should be emptied into the 2.5 gai plastic container in the hood in the Special Analysis tab. When full an Ammonia Storage operator or a Pellet Plant operator should recycle the aqua into the sulfate plant sump or the into the funnel that goes into the Heil scrubber basin. 8. Sample bottles should then be aired in the hood then rinsed 3-4 times with Dl water. f-Innemp-nN Ad I ervisor for instructions.