o 6xevwdqfhv (pfas) - geosyntec consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj...

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Per- and 3RO\ÁXRURDON\O 6XEVWDQFHV (PFAS)

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Page 1: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

Per- and 3RO\ÁXRURDON\O�6XEVWDQFHV�(PFAS)

Page 2: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

THE PFAS CONUNDRUM3)$6�DUH�FKDOOHQJLQJ�FRQWDPLQDQWV�EHFDXVH�PDQ\�FRQVWLWXHQWV�FDQQRW�EH�GHWHFWHG�XVLQJ�FRQYHQWLRQDO�DQDO\WLFDO� WHFKQLTXHV��5HPHGLDWLRQ�RSWLRQV� WKDW�PD\�DGGUHVV�RQH�3)$6�PD\�QRW�ZRUN�IRU�RWKHUV��DQG�RQO\�SDUWLDO�WUHDWPHQW�PD\�EH�DFKLHYDEOH��%\SURGXFWV�RI�WUHDWPHQW�PD\�QRW�EH�GHWHFWHG�DQG�WKXV�WKHLU�ULVN�LV�XQNQRZQ��5LVN�EDVHG�VWDQGDUGV� IRU�3)$6� LQ�VRLO�DQG�ZDWHU�DUH�H[WUHPHO\� ORZ�� ,QYHVWLJDWLRQ�DQG�PDQDJHPHQW�RI�3)$6�VLWHV�UHTXLUHV�DQ�LQQRYDWLYH��DGDSWDEOH�DQG�HGXFDWHG�WHDP��DFWLYHO\�LQYROYHG�LQ��QRW�MXVW�DZDUH�RI��FXUUHQW�UHVHDUFK��DQG�FDSDEOH�RI�GHYHORSLQJ�DQG�RSWLPL]LQJ�QHZ�DSSURDFKHV�LQ�UHVSRQVH�WR�UHJXODWRU\�FKDQJHV��SROLF\�XSGDWHV��DQG�WHFKQRORJLFDO�DGYDQFHV�

Page 3: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

What are PFAS? PFAS are a family of emerging contaminants of increasing importance at D�EURDG�VSHFWUXP�RI� LQGXVWULDO� VLWHV�DQG�ZDWHUZD\V��3HUÁXRURRFWDQRLF�DFLG��3)2$��DQG�SHUÁXRURRFWDQH�VXOIRQDWH��3)26��DUH�WKH�WZR�PRVW�ZLGHO\�UHFRJ-QL]HG��HQYLURQPHQWDOO\�UHOHYDQW�3)$6��DOWKRXJK�WKHUH�DUH�KXQGUHGV�RI�3)$6�RI� SRWHQWLDO� VLJQLÀFDQFH�� DQG� OLWWOH� LV� FXUUHQWO\� NQRZQ� DERXW�PDQ\� RI� WKHVH�compounds.

Why are PFAS so Challenging?7KH�VRXUFHV�RI�3)$6�LQ�WKH�HQYLURQPHQW��H�J���$TXHRXV�)LOP�)RUPLQJ�)RDP�[AFFF]) involve complex mixtures of individual PFAS constituents. Progress LV�EHLQJ�PDGH�WRZDUGV�GHYHORSLQJ�DQDO\WLFDO�WHFKQLTXHV�WR�LPSURYH�WKH�GHWHF-WLRQ�RI�WKHVH�FRQVWLWXHQWV��LQFOXGLQJ�UHFHQW�UHVHDUFK�E\�*HRV\QWHF�DQG�SDUW-QHUV�GHYHORSLQJ�QXFOHDU�PDJQHWLF� UHVRQDQFH� �105��EDVHG�DQDO\WLFDO� WHFK-QLTXHV�DQG�WRWDO�ÁXRULGH�ÀHOG�VFUHHQLQJ��7KH�EHKDYLRU�RI�3)$6�FRQVWLWXHQWV�LQ�WKH�HQYLURQPHQW�FDQ�YDU\�ZLGHO\�GHSHQGLQJ�RQ�WKH�FRPSRVLWLRQ�RI�WKH�3)$6�PL[WXUH��WKH�SUHVHQFH�RI�FR�FRQWDPLQDQWV��DQG�WKH�LQWURGXFWLRQ�RI�R[LGDQWV�RU�UHGXFWDQWV� LQWR� WKH�HQYLURQPHQW��0DLQWDLQLQJ�D�ÁXRULGH�PDVV�EDODQFH�ZKLOH�monitoring byproducts of degradation reactions is critical to understanding UHPHGLDO� VXFFHVV�EXW� RIWHQ�GLIÀFXOW� WR� DFKLHYH��$V� VXFK�� LW� LV� HVVHQWLDO� WKDW�NQRZOHGJHDEOH� SUDFWLWLRQHUV�� ZKR� IXQGDPHQWDOO\� XQGHUVWDQG� WKH� OLPLWDWLRQV�DQG� FKDOOHQJHV�DVVRFLDWHG�ZLWK�3)$6�� JXLGH� LQYHVWLJDWLRQ�DQG� UHPHGLDWLRQ�HIIRUWV�WR�DFKLHYH�VXFFHVVIXO�PLWLJDWLRQ�RI�ULVN�DW�3)$6�LPSDFWHG�VLWHV�

Geosyntec practitioners have decades of experience addressing emerging contaminants, including PFAS, in natural and treatment environments:• Internationally recognized industry leaders and WHFKQLFDO�H[SHUWV

• Experience in implementing strategic site investigation and remediation programs for routine or complex sites

• Testifying and consulting capabilities, and GLUHFW�LQYROYHPHQW�LQ�PDQ\�RI�WKH�ODUJHVW�and most complex legal disputes related to emerging contaminants

• Commitment to offering cost-effective, defensible solutions for clients

• 3URÀFLHQF\�LQ�PLWLJDWLQJ�3)$6�LPSDFWV�following incident response activities using AFFF

• Expertise in utilizing diagnostic and forensic WRROV�WR�GLVWLQJXLVK�3)$6�VRXUFHV

• $FWLYHO\�OHDGLQJ�DSSOLHG�UHVHDUFK�DQG�demonstration efforts to develop new WHFKQRORJLHV�IRU�VDPSOLQJ�DQG�WUHDWLQJ�3)$6

• $XWKRUV�RI�JXLGDQFH�GRFXPHQWV��WHFKQLFDO�DUWLFOHV��ERRNV��DQG�MRXUQDO�SXEOLFDWLRQV�WR�FRPPXQLFDWH�NH\�3)$6�DGYDQFHV

2XU�H[SHUWV�ORRN�DW�WKH�´ELJJHU�SLFWXUHµ�XVLQJ�ULJRURXV�DQG�IXQGDPHQWDO�VFLHQWLÀF�SULQFLSOHV��:H�XWLOL]H�YDULRXV�WRROV�LQ�RXU�WRROER[�LQ�DSSURSULDWH�DQG�GHIHQVLEOH�ZD\V�

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30%

MASTER’S DEGREE

53%BACHELOR’S DEGREE

DOCTORATE DEGREE17%

Page 4: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

Example Project Descriptions)RFXVHG�5HPHGLDO�,QYHVWLJDWLRQ�DW�3ODWWVEXUJK�$LU�)RUFH�%DVH8QLWHG�6WDWHV�$LU�)RUFH��$KWQD• Reviewed existing PFAS data and developed a data gap assessment for PFAS

transport to potential receptors• &RQGXFWHG�ÀHOG�VDPSOLQJ�IRU�VRLO��JURXQGZDWHU��DQG�VXUIDFH�ZDWHU�VDPSOHV

/DUJH�6FDOH�0XOWL�0HGLD�3)$6�$VVHVVPHQW&RQÀGHQWLDO�&OLHQW��)ORULGD• Developed Standard Operating Procedures (SOPs) for PFAS sampling in soil,

groundwater, surface water, and more• ,GHQWLÀHG�$)))�VWRUDJH�DQG�DSSOLFDWLRQ�DUHDV�DQG�SRWHQWLDO�VDPSOH�ORFDWLRQV��EDVHG�

on document review, site reconnaissance, and interviews• Developed a multi-media sampling program• &ROOHFWHG�RYHU�����JURXQGZDWHU�VDPSOHV�XVLQJ�GLUHFW�SXVK�WHFKQRORJ\��'37��IURP�PXOWLSOH�ORFDWLRQV�DQG�GHSWKV��DV�ZHOO�DV�PRQLWRULQJ�ZHOO�DQG�VXUIDFH�ZDWHU�VDPSOHV

• 9DOLGDWHG�3)$6�GDWD�WR�HYDOXDWH�WKH�GHIHQVLELOLW\�DQG�XVDELOLW\�RI�WKH�VDPSOH�UHVXOWV�LQ�VXSSRUWLQJ�GDWD�TXDOLW\�REMHFWLYHV

• Evaluated PFAS analytical results to identify PFAS source zones 3)$6�6RXUFH�$VVHVVPHQW��)RUHQVLFV��DQG�&RPSOLDQFH&RQÀGHQWLDO�,QGXVWULDO�&OLHQWV��1HZ�(QJODQG• &KDUDFWHUL]HG�3)$6�UHOHDVH�PHFKDQLVPV�DQG�WUDQVSRUW�SDWKZD\V��ZLWK�D�IRFXV�RQ�DLUERUQH�GHSRVLWLRQ�IURP�LQGXVWULDO�SURFHVVHV�DQG�VXEVHTXHQW�WUDQVSRUW�YLD�URRI�UXQRII�DQG�VXEVHTXHQW�LPSDFWV�WR�JURXQGZDWHU�DQG�RU�GULQNLQJ�ZDWHU�VXSSOLHV

• ,GHQWLÀHG�RWKHU�SRWHQWLDO�3)$6�VRXUFHV��LQFOXGLQJ�ÀUH�WUDLQLQJ�IDFLOLWLHV��LQGXVWULDO�GLVFKDUJHV��VHSWLF�GLVFKDUJHV��DQG�ZDVWHZDWHU�WUHDWPHQW�SODQW�UHVLGXDOV

• 'HYHORSHG�D�FRQFHSWXDO�VLWH�PRGHO�E\�V\QWKHVL]LQJ�ÀHOG�DQG�ODERUDWRU\�GDWD�DQG�FRQGXFWLQJ�D�IRUHQVLF�DQDO\VLV�RI�3)$6�PL[WXUHV��LQFOXGLQJ�EUDQFKHG�LVRPHUV�WR�assess PFAS origin

• &RQGXFWHG�FRPPXQLW\�RXWUHDFK�DQG�FRRUGLQDWLRQ�ZLWK�VWDWH�DQG�PXQLFLSDO�DJHQFLHV�DIIHFWHG�E\�3)$6�LQ�GULQNLQJ�ZDWHU

• $GDSWHG�LQYHVWLJDWLRQ�DQG�UHJXODWRU\�FRPSOLDQFH�DSSURDFK�LQ�UHVSRQVH�WR�D�UDSLGO\�HYROYLQJ�UHJXODWRU\�IUDPHZRUN�IRU�3)$6

3)$6�,QYHVWLJDWLRQV�LQ�5HVSRQVH�WR�&DOLIRUQLD�6WDWHZLGH�2UGHUV0XOWLSOH�/DQGÀOOV�DQG�$LUSRUWV��&DOLIRUQLD• 0HW�VKRUW�GHDGOLQHV�IRU�ZRUN�SODQ�VXEPLWWDOV��IROORZLQJ�LQYHVWLJDWLYH�RUGHUV�WR�WHQV�RI�PXQLFLSDO�VROLG�ZDVWH�ODQGÀOOV�DQG�DLUSRUWV�VWDWHZLGH

• 5HYLHZHG�VLWH�KLVWRULFDO�UHFRUGV�DQG�LQWHUYLHZHG�SHUVRQV�NQRZOHGJHDEOH�ZLWK�KLVWRULFDO�PFAS use to develop a sampling plan

• 3UHSDUHG�VLWH�VSHFLÀF�ZRUN�SODQV��VDPSOH�DQDO\VLV�SODQV��DQG�VLWH�VSHFLÀF�UHSRUWV

• &RQGXFWHG�ÀHOG�VDPSOLQJ�HYHQWV�IRU�VRLO��JURXQGZDWHU��DQG�ODQGÀOO�OHDFKDWH

,Q�WKLV�TXLFNO\�HYROYLQJ�VFLHQWLÀF�DQG�UHJXODWRU\� ODQGVFDSH��RXU�VXEMHFW�PDWWHU�H[SHUWV�ZRUN�FROODERUDWLYHO\�ZLWK�SURMHFW�WHDPV�DQG�FOLHQWV�WR�PDQDJH�XQFHUWDLQW\�DQG�LQIRUP�EHVW�YDOXH�PDQDJHPHQW�VWUDWHJLHV�IRU�3)$6�ZKLOH�SURWHFWLQJ�KXPDQ�KHDOWK�DQG�HQYLURQPHQW

A Clearer Path

Page 5: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

Example Project Descriptions)LUH�7UDLQLQJ�$UHD�$VVHVVPHQWV&RQÀGHQWLDO�&OLHQW��)ORULGD• ,GHQWLÀHG�DQG�FDWHJRUL]HG�XQXVHG�$)))�LQ�GUXPV�DQG�WRWHV�DQG�FRRUGLQDWHG�UHPRYDO��SURSHU�RII�

site disposal, and incineration of materials• Conducted site reconnaissance and site interviews to identify potential AFFF storage and

application areas• 'HYHORSHG�ZRUN�SODQV�WR�SHUIRUP�PXOWL�PHGLD�VDPSOLQJ��JURXQGZDWHU��VXUIDFH�ZDWHU��VRLO��DQG�VHGLPHQWV��IRU�3)$6�DW�PXOWLSOH�ÀUH�WUDLQLQJ�IDFLOLWLHV

• ,PSOHPHQWHG�ZRUN�SODQV�DQG�HYDOXDWHG�GDWD�WR�HYDOXDWH�WKH�SUHVHQFH�RU�DEVHQFH�RI�3)$6�DIIHFWHG�media to guide future activities

*URXQGZDWHU�0RGHOLQJ�WR�(YDOXDWH�3)$6�)DWH�DQG�7UDQVSRUW(LHOVRQ�$LU�)RUFH�%DVH��$ODVND• &RPSLOHG�DQG�UHYLHZHG�DYDLODEOH�LQIRUPDWLRQ�RQ�OLWKRORJ\��K\GURJHRORJ\��DQG�FKHPLVWU\• 'RFXPHQWHG�ORFDO�SXPSLQJ�ZHOOV�WR�XQGHUVWDQG�JURXQGZDWHU�ZLWKGUDZDO�DQG�VLQNV• Collected stable isotope samples to evaluate permafrost distribution and its effect on groundwater ÁRZ�SDWKV

• 5HYLVHG�VLWH�FRQFHSWXDO�VLWH�PRGHO��LQFOXGLQJ�GLVWULEXWLRQ�RI�SHUPDIURVW�LQ�WKH�VXEVXUIDFH• 'HYHORSHG�D�SUHOLPLQDU\�EDVH�ZLGH�JURXQGZDWHU�ÁRZ�PRGHO�XVLQJ�0RGÁRZ�86*• 5HÀQHG�DQG�FDOLEUDWHG�PRGHO�ZLOO�EH�XVHG�WR�HYDOXDWH�3)$6�ÁRZ�SDWKV�LQ�UHODWLRQ�WR�NQRZQ�

groundwater use receptors

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in-situ applications

3)$6�6WRUPZDWHU�%HVW�0DQDJHPHQW�3UDFWLFHV��%03V��6(5'3��7H[DV�7HFK��6WDQIRUG�8QLYHUVLW\��63$:$5�1,:&�3DFLÀF��8QLYHUVLW\�RI�$ODEDPD• &ROOHFWHG�VLWH�VSHFLÀF�VWRUPZDWHU�VHGLPHQWV�DQG�FRPSOHWHG�GDWD�DQDO\VLV• ,Q�ODE�FROXPQ�WHVWV��HYDOXDWHG�SRWHQWLDO�UHGXFWLRQ�RI�3)$6�DQG�RWKHU�VWRUPZDWHU�FRQVWLWXHQWV�XVLQJ�EODFN�FDUERQ�DQG�RWKHU�VRUSWLRQ�PDWHULDOV�(YDOXDWHG�RWKHU�VRXUFH�FRQWURO�PHDVXUHV

• ,Q�ÀHOG�VWXGLHV��HYDOXDWHG�3)$6�UHPRYDO�E\�SDUWLFOH�VL]H�LQ�H[LVWLQJ�VWUXFWXUDO�VWRUPZDWHU�%03V��H�J���UHWHQWLRQ�SRQGV��ELRÀOWHUV��ELRVZDOHV��DW�'R'�IDFLOLWLHV

• 'HYHORSHG�PDQDJHPHQW�WRROV�IRU�VHOHFWLRQ�RI�VWRUPZDWHU�%03V�WR�UHGXFH�VHGLPHQW�UHFRQWDPLQDWLRQ�ULVN�IURP�3)$6�DQG�RWKHU�SULRULW\�SROOXWDQWV

6WRUPZDWHU�'U\ZHOO�*XLGDQFH&DOLIRUQLD�6WDWH�:DWHU�5HVRXUFHV�&RQWURO�%RDUG• $QDO\]HG�SXEOLVKHG�GDWD�WR�GHYHORS�QHZ�VWDWHZLGH�JXLGDQFH�IRU�VWRUPZDWHU�GU\ZHOOV�ZKLFK�PD\�EH�D�SDWKZD\�IRU�FRQWDPLQDQWV�WR�JURXQGZDWHU

• 'HYHORSHG�D�ULVN�EDVHG�IUDPHZRUN�IRU�GU\ZHOO�VLWLQJ�DQG�GHVLJQ�WR�UHGXFH�WKH�ULVN�RI�JURXQGZDWHU�FRQWDPLQDWLRQ��LQFOXGLQJ�D�OLWHUDWXUH�UHYLHZ�RI�3)$6�VWRUPZDWHU�FRQFHQWUDWLRQV�WR�XQGHUVWDQG�WKH�SRWHQWLDO�3)$6�JURXQGZDWHU�FRQWDPLQDWLRQ�ULVN�IRU�VWRUPZDWHU�LQÀOWUDWLRQ

Page 6: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

,Q�6LWX�7UHDWPHQW�WR�(QKDQFH�3)$6�5HPRYDO�DQG�'HVWUXFWLRQ(67&3��1DY\��8QLYHUVLW\�RI�&DOLIRUQLD�DW�%HUNHOH\• &RQGXFWHG�EDVHOLQH�VLWH�FKDUDFWHUL]DWLRQ�DQG�VLWH�VSHFLÀF�WUHDWDELOLW\�VWXGLHV�DW�1DYDO�$LU�6WDWLRQ�-DFNVRQYLOOH

• 'HYHORSHG�D�WZR�VWHS�WUHDWPHQW�DSSURDFK�IRU�3)$6�XVLQJ�WKHUPDOO\�HQKDQFHG�ORZ�S+�SHUVXOIDWH�R[LGDWLRQ�WR�GHVWUR\�3)2$�DQG�RWKHU�SHUÁXRULQDWHG�FDUER[\OLF�DFLGV�IROORZHG�E\�*$&�WR�FDSWXUH�3)26�DQG�RWKHU�SHUÁXRULQDWHG�VXOIRQLF�DFLGV

• 'HPRQVWUDWHG�WKH�FRQYHUVLRQ�RI�3)$6�SUHFXUVRUV�ZLWK�ODUJHO\�XQNQRZQ�IDWH�DQG�WUDQVSRUW�FKDUDFWHULVWLFV�WR�D�VPDOO�VXLWH�RI�FRPSRXQGV�ZLWK�EHWWHU�NQRZQ�FKDUDFWHULVWLFV�WKHUHE\�HOLPLQDWLQJ�ORQJ�WHUP�PDQDJHPHQW�RI�WKH�VRXUFH�DUHD

'HYHORSPHQW�RI�5HDO�7LPH�3)$6�$QDO\WLFDO�0HWKRGV*HRV\QWHF��(XURÀQV• Developed a mobile analytical instrument for real-time analysis of PFOS and PFOA in WKH�ÀHOG

• 'HYHORSHG�D�1XFOHDU�0DJQHWLF�5HVRQDQFH�WHFKQLTXH�IRU�IXOO�VSHFWUXP�3)$6�FKDUDFWHUL]DWLRQ

+XPDQ�+HDOWK�5LVN��)DWH��DQG�&KHPLFDO�/LDELOLW\�$VVHVVPHQW0LQQHDSROLV�6W��3DXO��0LQQHVRWD• (YDOXDWHG�KXPDQ�KHDOWK�ULVNV�GXH�WR�ELRDFFXPXODWLRQ�RI�3)$6�LQ�ÀVK• Assessed Total Maximum Daily Load (TMDL)• (IIRUWV�DOVR�LQFOXGHG�OLDELOLW\�DQDO\VLV��OLWLJDWLRQ�VXSSRUW��DQG�VWDNHKROGHU�

communications

&RPPXQLW\�2XWUHDFK�DQG�5HJXODWRU\�3ROLF\�$GKHUHQFH,VVDTXDK�9DOOH\�$TXLIHU��.LQJ�&RXQW\�:DVKLQJWRQ• 0DQDJHG�RSHUDWLRQDO��SXEOLF��DQG�UHJXODWRU\�LVVXHV�DVVRFLDWHG�ZLWK�WKH�GHFUHDVH�LQ�(3$·V�KHDOWK�DGYLVRU\�OLPLW�IRU�3)$6�������XJ�/�IRU�WKH�VXP�RI�3)26�DQG�3)2$�

• ,QLWLDWHG�GLVFXVVLRQV�ZLWK�VXUURXQGLQJ�ZDWHU�SXUYH\RUV�DQG�VWDWH�UHJXODWRU\�DJHQFLHV�RQ�IXWXUH�PDQDJHPHQW�RI�WKH�DTXLIHU�V\VWHP

([SHUW�3DQHO�5HJDUGLQJ�3)$6�5HJXODWLRQ5$$)�%DVH�:LOOLDPWRZQ��$XVWUDOLD• 7HFKQLFDO�VXSSRUW�DGYLVLQJ�H[SHUW�SDQHO�RQ�3)$6�UHJXODWLRQ• Critical review and data gap analysis of conceptual site model

• Peer review and advice for PFAS sampling and data interpretation

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conferences• 3UHSDUHG�XS�WR�GDWH�UHIHUHQFH�GRFXPHQWV�DQG�RQOLQH�YLGHRV�RQ�3)$6�FKHPLVWU\��IDWH�

and transport, and site management options

The Geosyntec Difference

Example Project Descriptions

Page 7: O 6XEVWDQFHV (PFAS) - Geosyntec Consultants · the pfas. conundrum. 3)$6 duh fkdoohqjlqj frqwdplqdqwv ehfdxvh pdq\ frqvwlwxhqwv fdqqrw eh ghwhfwhg xvlqj frqyhqwlrqdo dqdo\wlfdo whfkqltxhv

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practices• Performed mass balance calculations to demonstrate de-minus impacts to sensitive receptors

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CONTACT INFORMATION

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