3M Medical Department Study: T-6295.12 Analytical Report: FACT TOX-110 LRN-U2849 Table 7: Ambient-Temperature Stability of PFOS in Rat Serum After 24 Hours N A Not Applicable RSD = (SD/Mean)x 100 %DEV fkom 0Hour = [(X Hour Conc.- 0 Hour Conc.)

CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies PVDF and ECTFE used for sulphuric acid Description of sulphuric acid slightly yellow viscous liquid (oil of triviol) soluble in water at all concentrations Diprotic acid Corrosive due to its - strong acidic nature, - strong dehydrating property - strong oxidizing property (concentrated acid) CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies Resistance of PVDF against sulphuric acid Temperature [C] Maximal admissible concentration of H2SO4 23 96,3 50 93 100 85 120 80 150 70 (no pressure) Information based on chemical resistance tests of the raw material supplier CHEMICAL RESISTANCE AGAINST H2SO4 Chemical Resistance of PVDF against sulphuric acid resistance Brown discoloration Permeation Material properties H2SO4 Concentration Temperature Hoop stress V max Time at rupture H2O V max without rupture Effects of % C MPa hours MPa 97 10 54700 chemical media 96 50 18 37650 23 93 18 > 54900 * Resistance 96 1 8600 93 100 4 7900 12.5 against various 9800 6 > 9200 11 54530 media 93 120 3 296 9.5 80 9 > 17500 * Case studies 90 2 1825 80 150 5 > 1700 5.5 70 fCR = H2SO4 / H2O 4 > 30000 fCR 0.43 0.78 0.78 < 0.1 < 0.3 0.48 < 0.88 < 0.1 0.94 < 0.1 (0.91) 0.72 CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies Sulphuric acid - brown discoloration Test criteria: 200 h at 95C V=11,5 N/mm Stopped after 240 hours Burst pressure 20C; 0,08 bar/sec 98 bar CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies High concentrated sulphuric acid (concentration: >96,3%) SO3(g) + H2O(l) H2SO4(l) -H2O Sulfur trioxide (SO3) CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies Resistance of PVDF against sulphur trioxide, which is formed by sulphuric acid >96,3% Deshydrofluorination Permeation Increase in weight (>5%) Stress cracking corrosion Typical phenomenon if SO3 only is present in very small amounts Physical and chemical degradation ECTFE is resistant against sulphuric acid with a concentration >96,3% without any restrictions CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies Medium: Temperature: Medium: Temperature: sulphuric acid 98% 20C sulphuric acid 96% 20C - 30C CHEMICAL RESISTANCE AGAINST H2SO4 Chemical resistance Material properties Effects of chemical media Resistance against various media Case studies Medium: Temperatrure: sulphuric acid 98% 20C The solution ETHYLENCHLORTRIFLUORETHYLEN - ECTFE

High Heat Resistant Thermal Interface Material VMQ EPDM FKM Heat resistant Good Fair Excellent Fiiler additon Excellent Good Fair Volatility resistance Fair Fair Excellent

ANNEX 2- Answer to question 7 from Europump Potential derogations marked for reconsideration - Analysis of alternatives and socio-economic analysis: Paragraphs 5 and 6 of the proposed restriction entry text (see table starting on page 4 of the summary of the Annex XV restriction report) include several potential derogations for reconsideration after the consultation (in [square brackets]).

Lens cleanability and how to clean lenses: a review WHITE PAPER This technical paper summarises the results of the latest research on the topic of lens cleanability while also taking the wearer's perspective into account.

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AR226-2036 PECKSR 07/28/98 11:53 AM To: cc: Subject: SZAKATBK, MILLERSR, HALBERRM PLAYTIS , MILLERW , PARSONMA, MAYLESM , ZIPFEL pathforward and problems with detemiination of C8 In air Based on high reported C8 results for -the air samples collected on and due to erratic 6C results, I recommend resareples be taken from these locations.

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Request for exemption - EBulb Markus Fiebig (Senior Business Development Manager, JOB Group) Summary of request for exemption - EBulb Why we believe an exemption for EBulb can be justified: Goal of this presentation: Request for exemption, unlimited Relevance for society: High because EBulb reduces the risk of fires caused by electricity and enables digitalization in sensitive areas Impact for environment: Low Expected emissions in the air by 2030: 92,50 mL(mililiters!)

AR226-2384 PERSONAL & CONFIDENTIAL 6/13/B4 TO; H.

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AR226-2682 4 AR226-2682 C-8 BIODEGRADATION IN ----GROUND WATER---- Andrew Hartten Dave Ellis May 7, 1998 GEOLOGICAL CROSS SECT SAMPLING LOCATIONS SITE CONCEPTUAL MODEL Source Areas Former anaerobic digestion pond (sludges removed) C-8 up to 614 mg/kg @ 8 - 10 foo Ground water at 309 SITE CONCEPTUAL MODEL Hydrogeology Sand and gravel 65-100 feet deep Yields up to 300 GPM Production wells influence GW flo Linear velocity 1 ft/day K= loo ft/ LUBECK WELL FIELD Travel time from anaerobic pond is about 5 years *& 2 ppb discharge concentration WHY STUDY C-8 DEGRADAT IN GROUND WATER?