DEQ-CFW_00003976

From: Goyb'Ju|ie [/D=NCMAL/OU=EXCHANGEADMINISTRATIVE GROUP
(FYD|BOHF2]3PDLT)/CN=REOP|ENTS/CN=JULIE. GRZYB]
Sent: 9/23/I0II7:38:58PW1
To: Meadows, Susan [/h=NCK8A|L/ou=ExchanXeAdministrative Group
(FYD|8OHFZ33PDO)/cn=Redpient$cn=susan.meadows];Moore, Cindy [/o=NCK8A|L/ou=[xchangeAdministrative
6roup(FYD|8OHF235PDLT)/cn=Recipients/cn=dndy.a.moore]
CC: 8e|nickTom [/v=NCK8A|L/ou=ExchanXeAdministrative Group (FYD|8OHFZ3SPDLT)/cn=Redpients/cn=tom.be|nick]
Subject: Toxicity tests and Water Treatment Plants
Attachments VVTPtoxicity breakdown 9-I].x|s
Susan,
I was wondering if you could up -date our NPDES Water Treatment Plant spreadsheet to include WET results for the
last year. I took the one you filled out for us last year and just broke the plants down into four treatment types —
Conventional, greensand, ion exchange, and reverse osmosis — 4 sheets. |Eand RO'sshowing the most failures. The
spreadsheets are onthe attached file.
VVeare starting toput re -opener clauses inpermits failing toxtests, and many ofthem are showing sig. concentrations
ofZn(JZ00,1JO0 130051Ouu/L)and Pb(1ZUUhighest, J1,17,1OOuo/Uand discharge tozero low -flow streams. We
are hesitate to put limit onZn until vveaddress the toxicity problem as whole but xveare putting Pb limits in the
renewed permits.
Susan, If you could update each sheet on the attached file with the last year of tox results from WTPs it would help
continue to guide us in trying to understand where and who has the most problems needing to be addressed.
Cindy, feel free to comment on any of this. We are interested to see the results from the WTP Al Hodge is working
with. | am gathering metals data from theVVTPs and will share them with you. |think it will help us in deciding on how
tohandle some ofthe failing facilities.
Thanks,
Julie
Julie A. Grzyb, Environmental Engineer
NCD4BNR/Division ofWater Quality / Surface Water Protection Section
NPI)2S Complex Permitting,Point Source Branch
|6|7Mail Service Center, Raleigh, NC27609-|6|7
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