Lub X liab qhia txog Kev Kawm Hluav Taws Xob ntawm Naval Research Laboratory - Chesapeake Bay Detachment. X xiav yog qhov chaw ntawm cov oyster kuaj los ntawm Lub Nroog Chesapeake Beach.
Los ntawm Pat Elder, MilitaryPoisons.org, Lub Xya hli ntuj 12, 2021
Lub Nroog Chesapeake tau tshaj tawm cov txiaj ntsig kev ceeb toom thaum Lub Yim Hli 10, 2021 rau PFAS hauv cov ntses, ntses, thiab cov kav dej phwj tuaj. Qhov qis dua li qhov xav tau 1,060 ppt ntawm PFAS tau tshaj tawm hauv cov oysters tau ceeb toom vim tias cov bivalves kuaj tau los ntawm qhov chaw 23 mais deb, hauv ib qho ntawm thaj chaw zoo tshaj plaws ntawm Chesapeake Bay. Lub caij no, ib lub perch ntes tau 1,000 ko taw los ntawm ntug dej hiav txwv ntawm Naval Research Laboratory - Chesapeake Bay Detachment (NRL-CBD) tau pom tias muaj 9,470 ppt ntawm cov tshuaj lom, thaum lub pob zeb muaj ntau ntawm 2,450 ppt. Ntau lub xeev txwv PFAS hauv dej haus rau 20 ppt, txawm tias Maryland tsis tswj cov tshuaj.
Ib qho me me ntawm pan-kib perch los ntawm Chesapeake Bay yuav hnyav 4 ooj lossis 113 grams. Yog tias cov ntses ntawm cov ntses muaj 9,470 feem ntawm ib trillion ntawm PFAS, qhov ntawd yog 9.47 feem ntawm ib billion, uas yog tib yam li 9.47 nanograms ib gram. (ng/g)
9.47 ng/gx 113 g = 1,070 ng. Qhov kev pabcuam 4-ounce muaj 1,070 nanograms ntawm PFAS. Peb mam li hais 4 ooj ntawm cov ntses qab no tau txais kev pab rau tus menyuam hnub nyoog tsib xyoos uas hnyav 50 phaus.
European Food Safety Authority (EFSA) tau teeb tsa Kev Ua Haujlwm Txhua Lub Limtiam (TWI) rau tus menyuam hnyav 50 phaus (22.6 kilos) ntawm 100 nanograms ib lub lim tiam ntawm plaub PFAS tshuaj, suav nrog PFOS.
Plaub ooj ntawm lub perch uas muaj 1,070 ng ntawm PFAS yog 10 npaug ntau dua li European txhua lub limtiam txwv rau peb tus menyuam. Lub perch yog tshuaj lom. Nws yuav tsis tua tus menyuam, tab sis nws yuav ua rau nws mob ntev.
Maryland Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv thiab Ib puag ncig tsis cuam tshuam nrog Marylanders siv cov tshuaj lom ntau los ntawm cov ntses me me no. Cov poj niam cev xeeb tub lossis cev xeeb tub yuav tsum tsis txhob haus cov perch uas nyob ze ze ntawm Naval Research Laboratory - Chesapeake Bay Detachment. Nws tau dhau los ua pov thawj tias lawv yuav tsum tsis txhob haus cov ntses los ntawm txhua qhov chaw hauv lub bay - thiab tsis muaj leej twg yuav tsum tau.
Cov txiaj ntsig tau tshaj tawm los ntawm Lub Nroog Chesapeake Beach kuj tau pom tias "kho" cov dej phwj tuaj yeem tso rau hauv lub bay los ntawm lub nroog tau pom tias muaj 506.9 ppt ntawm "cov tshuaj mus ib txhis". Perfluoropentanoic Acid (PFPeA), cov tub rog / kev lag luam surfactant suav nrog ntau qhov sib kis. Chesapeake Beach kuj tau txais kev cuam tshuam los ntawm Lub Nroog North Beach, thiab ib feem me me ntawm sab qab teb Anne Arundel County. Txhua yam ntawm PFAS tau xav tias yuav ua rau muaj kev phom sij, thaum lub hauv paus txoj hauv kev rau tib neeg noj yog los ntawm kev noj cov nqaij nruab deg los ntawm cov dej tsis huv.
Lub Nroog Chesapeake Beach tau tshaj tawm cov lus no:
"Lub Yim Hli 10, 2021 (Chesapeake Beach, MD) - Lub Nroog Chesapeake Beach txuas ntxiv koom tes nrog Maryland Lub Tsev Haujlwm Saib Xyuas Ib Cheeb Tsam thiab Tebchaws Meskas txog kev txo qis ntawm Navy Research Laboratory - Chesapeake Bay Detachment.
Thaum lub Tsib Hlis Ntuj xyoo 2021, Lub Nroog tau tshaj tawm tias Lub Nroog cov dej haus tsis muaj ib qho ntawm ib-thiab polyfluoroalkyl tshuaj (PFAS). Kev ntsuam xyuas tau ua nyob rau hauv tag nrho lub nroog qhov dej haus, uas kos los ntawm Aquia Aquifer.
Ntxiv rau kev kuaj lub nroog cov dej haus, Lub Nroog tau ua cov kauj ruam ntxiv los kuaj lub nroog cov dej ua luam dej, lub neej hauv dej hauv zos thiab Chesapeake Beach Water Reclamation (WRTP) effluent rau per-and polyfluoroalkyl tshuaj (PFAS).
Txawm hais tias lub nroog hais tias nws tau sim "lub neej hauv dej hauv zos", daim ntawv qhia oyster npaj los ntawm Eurofins Environment Testing America, hnub tim 8/4/21, suav nrog GPS tswj ntawm 3842.084. 7630.601 uas taw tes rau thaj tsam ntawm lub bay nyob 23 mais SSE los ntawm Chesapeake Beach, 1 mais ntawm St. John Creek nyob rau sab hnub tuaj ntug dej hiav txwv ntawm Maryland, ze rau Taylor's Island Wildlife Management Area. Lub tsev kawm ntawv yog kwv yees li 5.5 sab hnub tuaj ntawm Cove Point Light House thiab suav tias yog ib qho ntawm thaj chaw pristine tshaj plaws ntawm Chesapeake cheeb tsam. Saib cov Eurofins Oyster Report tso los ntawm lub zos.
Lub Rockfish thiab Perch tau sau los ntawm 3865.722, 7652.5429, uas nyob ze li ntawm 1,000 feet ntawm ntug dej hiav txwv los ntawm NRL-CBD. Saib cov Eurofins Fish Report tso los ntawm lub zos.
Nyob rau hauv ib qho txawv txawv, daim ntawv qhia txog oyster thiab ntses npaj los ntawm Eurofins tau ua tiav rau tus neeg siv khoom:
phooj ywg
8200 Bayside Rd.
Chesapeake, Maryland 20732
Tom ntej: Holly Wahl
PEER luv luv rau Cov Neeg Ua Haujlwm Pej Xeem rau Lub Luag Haujlwm Ib puag ncig, ib lub koom haum ua haujlwm ib puag ncig nyob hauv Silver Spring, Maryland uas tiv thaiv cov neeg tawm xov xwm thiab teeb lub teeb rau tsoomfwv ua txhaum cai. Tim Whitehouse, Tus Thawj Coj Thawj Coj ntawm PEER tau hais tias nws lub chaw haujlwm "tsis koom nrog" hauv kev tshaj tawm tsab ntawv tshaj tawm.
Lub Nroog Chesapeake Beach hais tias nws "txuas ntxiv nrog rau Maryland Lub Tsev Haujlwm Saib Xyuas Ib puag ncig thiab Tebchaws Meskas Navy txog kev txo qis ntawm Navy Research Laboratory - Chesapeake Bay Detachment" thiab qhov no yog qhov tseeb heev.
Tu siab, tsis muaj leej twg yuav txo tau cov tshuaj nyob rau hauv ib puag ncig. Hloov chaw, lawv tab tom sim txo cov kev txhawj xeeb pej xeem txog Navy qhov kev kis kab mob ntawm Chesapeake Bay. DOD mitigation yog ib lub tswv yim loaded. Daim ntawv tso cai rau tshuaj lom yog tau txais los ntawm kev yuam, txhawb nqa, thiab kev tshaj tawm zoo.
Thaum PFAS qib siab tau tshaj tawm hauv cov dej ntawm St. Inigoes Creek uas nyob ib sab ntawm Webster Field Annex ntawm Patuxent River Naval Air Station thaum Lub Ob Hlis, 2020, Ira May, uas saib xyuas tsoom fwv kev ntxuav qhov chaw rau Maryland Lub Tsev Haujlwm Saib Xyuas Ib Cheeb Tsam, tau hais tias kev kis kab mob hauv lub kwj deg, "yog tias muaj", tuaj yeem muaj lwm qhov chaw. Cov tshuaj feem ntau pom muaj nyob rau hauv qhov chaw pov tseg, nws tau sau tseg, nrog rau hauv biosolids thiab ntawm qhov chaw uas cov tub ceev xwm tua hluav taws tau txau ua npuas ncauj.
Qhov chaw pov tseg ze tshaj plaws rau kev siv tsis tu ncua ntawm PFAS-laced firefighting foam ntawm lub hauv paus yog 11 mais deb thaum lub txee dai khaub ncaws yog 5 mais deb.
"Yog li, muaj ntau qhov chaw muaj peev xwm," May hais. "Peb tsuas yog thaum pib ntawm saib tag nrho cov ntawd." Thiab lawv tseem nyob ntawm qhov pib.
Maryland tus thawj coj ntawm ib puag ncig sab saum toj tab tom npog rau DOD. Cov Navy tom qab tau tshaj tawm 84,756 ppt ntawm PFAS hauv av hauv Webster Field, mus rau lub pas dej.
Muaj pov thawj ntxiv ntawm Maryland qhov tsis txaus ntseeg txog PFAS hauv Chesapeake lub neej dej. Thaum lub Cuaj Hlis 2020, Maryland Lub Tsev Haujlwm Saib Xyuas Ib puag ncig (MDE) tau tshaj tawm tsab ntawv tshaj tawm hu ua "St. Mary's River Pilot Kawm ntawm PFAS tshwm sim hauv Dej Ntog thiab Oysters. " (Kev Kawm PFAS) uas tau tshuaj xyuas cov theem ntawm ib-thiab poly fluoroalkyl tshuaj (PFAS) hauv seawater thiab kab noj hniav. Tshwj xeeb, PFAS Kev Tshawb Fawb Txog Kev Tshawb Fawb tau xaus tias txawm hais tias PFAS muaj nyob rau hauv cov dej tidal ntawm St. Mary tus dej, qhov ntau yog "qis dua qhov kev pheej hmoo raws li kev siv kev soj ntsuam cov kev soj ntsuam thiab kev noj zaub mov noj nyob rau hauv chaw kawm tshwj xeeb."
Thaum tsab ntawv tshaj tawm ua cov ntsiab lus dav dav no, cov txheej txheem kev tshuaj xyuas thiab lub hauv paus rau kev soj ntsuam kev siv los ntawm MDE yog cov lus nug, uas ua rau cov pej xeem muaj qhov tsis zoo, thiab muab qhov tsis tseeb thiab tsis tseeb txog kev nyab xeeb.
MDE cov lus xaus over-mus txog qhov tsim nyog nrhiav tau raws li cov ntaub ntawv tiag tiag sau thiab poob qis ntawm kev lees paub kev tshawb fawb thiab kev lag luam cov qauv ntawm ob peb sab. PFAS Pilot Study tau sim thiab qhia txog qhov muaj PFAS hauv cov ntaub so ntswg. Kev tshuaj xyuas tau ua los ntawm Alpha Analytical Laboratory ntawm Mansfield, Massachusetts.
Cov kev ntsuam xyuas ua los ntawm Alpha Analytical Laboratory muaj qhov txwv tsis pub muaj cov oysters ntawm ib microgram ib kilogram (1 µg / kg) uas yog sib npaug rau 1 feem ntawm ib billion, los yog 1,000 qhov chaw ib trillion. (ppt.) Yog li ntawd, raws li txhua qhov PFAS compound tau kuaj pom tus kheej, txoj kev tshuaj ntsuam xyuas ua haujlwm tsis tuaj yeem kuaj pom ib qho PFAS tam sim no ntawm tus nqi tsawg dua 1,000 qhov chaw hauv ib trillion. Lub xub ntiag ntawm PFAS yog additive; Yog li, cov nyiaj ntawm txhua qhov sib txuas ntxiv kom tuaj txog ntawm tag nrho PFAS tam sim no hauv ib qho qauv. Concentrations yuav ntau tshaj li ntau txhiab qhov chaw ntawm ib trillion ntawm cov co toxins nyob rau hauv ib tug oyster thaum lub xeev qhia "Tsis pom".
MDE tab tom npog rau Navy thaum Lub Nroog Chesapeake Beach tsis muaj kev thov Vajtswv txawm tias nws txiav txim siab ua tus neeg ncaj ncees.
Hauv qab no yog cov kev tshawb pom los ntawm kev tshawb fawb oyster thiab ntses, ua raws li kev soj ntsuam PFAS los ntawm Pace Analytical ntawm cov dej ntws los ntawm Chesapeake Beach Water Reclamation Treatment Plant, (WRTP). Cov dej ntws tawm tau muab tso rau hauv lub bay tom qab kho. Cov tshuaj PFAS tsis raug tshem tawm ntawm cov kua dej hauv cov txheej txheem kho.
oyster
PFOA - Perfluorooctanoic acid 180 ppt JB *
PFOS - Perfluorooctanesulfonic acid 470 ppt J
PFOSA - Perfluorooctanesulfonamide 410 ppt J
Tag nrho 1,060
===========
Perch
PFOS - Perfluorooctane sulfonic acid 7,400 ppt
PFOA - Perfluorooctanoic acid) 210 ppt JB
PFNA Perfluorononanoic acid) 770 ppt
PFDA Perfluorodecanoic acid) 370 ppt JB
PFHxS Perfluorohexane sulfonate) 210 ppt J
PFUnDA Perfluoroundecanoic acid) 510 ppt J
Tag nrho 9,470 p
==========
Rockfish (Striped Bass)
PFOS - Perfluorooctanesulfonic acid 1,200 ppt
PFHxA - Perfluorohexanoic acid 220 ppt JB
PFOA - Perfluorooctanoic acid 260 ppt JB
PFDA - Perfluorodecanoic acid 280 ppt JB
PFOSA - Perfluorooctanesulfonamide 200 ppt J
PFUnDA - Perfluoroundecanoic acid 290 ppt J
Tag nrho 2,450 ppt
===============
J - concentration yog kwv yees tus nqi; B - qhov sib xyaw tau pom nyob rau hauv qhov khoob thiab qauv.
Lub Nroog Chesapeake Beach Water Reclamation Treatment Plant
Cov txiaj ntsig zoo rau PFAS
Dej 06/10/2021
Ntsej Muag Pom
Chesapeake Beach, MD
Sample Analysis Summary PFAS los ntawm Isotope Dilution Client
PFAS concentration
PFPeA - Perfluoropentanoic acid 350 ppt
PFBA - Perfluorobutyrate 13
PFBS - Perfluorobutanesulfonic acid 11
PFHxA - Perfluorohexanoic acid 110
PFHpA – Perfluoroheptanoic acid 6.4
PFHxS - Perfluorohexane sulfonate 2.3
PFOA - Perfluorooctanoic acid 11
PFOS - Perfluorooctanesulfonic 3.2
Tag nrho 506.9 p
=============
Thaum lub Tsib Hlis 2021, Navy tau tshaj tawm tias NRL-CBD qhov chaw muaj PFAS qib hauv cov av subsurface tshaj 8 lab qhov chaw ib trillion, tej zaum cov qib siab tshaj plaws nyob txhua qhov chaw hauv ntiaj teb. Qhov ntim ntawm kev kis kab mob yuav ua rau muaj kev kis kab mob txuas ntxiv ntawm thaj av rau ntau txhiab xyoo. Ib lub kwj deg tawm hauv lub hauv paus tau pom tias muaj 5,464 ppt ntawm cov tshuaj lom thaum cov dej hauv av tau kuaj pom ntawm qhov ntau ntawm 171,000 ppt. Kev sib kis ntawm cov av, dej saum npoo av, thiab cov dej hauv av yuav luag tag nrho los ntawm PFOS, sib cav tias ntau yam PFAS tuag taus. Wisconsin Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv hais tias tib neeg kev noj qab haus huv yuav raug kev puas tsuaj thaum cov dej saum npoo av siab tshaj 2 ppt ntawm PFOS, vim yog qhov bioaccumulative ntawm PFOS hauv cov ntses. Ntau lub xeev txwv cov dej hauv av rau 20 ppt, txawm tias tsis yog Maryland.
