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WATER GREMLIN PUBLIC: HEALTH ASSESSMENT: PUBLIC coMMENT DRAFT <br />Contents <br />Foreword...... ........ ............................................. ...... ,.;...................... :..........:......:........................................:.2 <br />Figures...... :......................... :.................... .......:...... ......... :...:.....:................................................................. 4 <br />Tables............... ....:................. ......................... ......:..................... :....:.... :..................... :.:......... 4........... :....... 4 <br />Purpose.., ....... ........................ ... ...... .................................................................................5 <br />f. Summary ......................................................................................................................5 <br />.............. ... .... .... <br />A. Introduction and Background........................................................ ..................................................... .5 <br />B. Conclusions........................................................................................ ...... ....... ................. .6 <br />11. Air Emissions .......4.................... <br />A. Past TCE Air Emissions ............ :................................... :.............................. .................................... 7 <br />.B, 2019-2020 Air Emissions —trans4;2:-dichloroethylene (t-DCE)..:.....:.::.......::..:....:.:.:.................14 <br />C. Lead and Particulate.Air Emissions .... .....................................................................................20 <br />III. Remedial Investigation Data and.Interpretation .................... 21 <br />A. Groundwater.................:..............:...............................................................................................22 <br />B. Soil., .......... ....................................................26 <br />C, Sub -Slab Soil. Vapor— Water Gremlin Facility ......... :.......... : <br />D. Soil Vapor .................................................. :................ :....... :....... :............ :.....:,........... ....................... 3.0 <br />E. Sediment.........................................:....................:..................:............:....:.......:.........................30 <br />F. Surface Water ............................ ::.................................... ::.............. :.............. :............................ 32 <br />G. Past Remedial Investigations and H istorical Actions=-1994-2004.................................... :........ 34 <br />V. Drinking Water..............................................:........................:...........:............................................36 <br />A.. Municipal Wa.ter.........................................................................................................................36 <br />B. Private Wells ........ ...... ........... ......... ... .... ........ 36 <br />VI. Worker and Worker Family Exposures ...... :.................................... .............. .................................... 39 <br />A. Indoor Air —.Workplace Chemical Use and Vapor Intrusion ........................... :.:............... ...:...... 39 <br />B. Lead and Take -Home Lead ................................................. :....:.::...... :....... :........ :.......................... 40 <br />VII. Minnesota Public Health Data .............................................. :...........:............................................ 4.1 <br />A. Cancer.: .................................................... ................................................................41 <br />B.. Birth Defects ...................................................... ................................................. ... .....43 <br />C. Community Blood Lead Levels.:.:........:.::...................................................:...............,.................44 <br />VIII. Responding to Community Concerns..............:......................:.......::............................................46 <br />A. Health.Study Requests ........ :...:............. :............... :........... <br />.. <br />......................................................... 48 <br />3 <br />