HomeMy WebLinkAbout04-07-22 Correspondence - M. Kelly - DEQ Water Quality Standard s
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DE (I-W
Montana Department
of Environmental Quality
April 3,2022
Dear Interested Party; voted to adopt the Department of Environmental
December 11, 2020 the Board of Environmental ality Review(board), requirement for the
e at standard for Lake Koocanusa i no r q law and determined the
On D d selenium w
Quality's(department) propose
t ere w
in MCA 75-5-203. The multi-part standard includes fish tissu k��mtuscle,
standard was no more stringebedt in federal guidelines. There ore, dw egg/ovary,11.3 mg/ g
proposed k dr weight( )
completion of written findings as describe
L in the Kootenai River
components with the following numeric values: 15.1 mg/ g y
column comp and 0.8 µg/L total dissolved selenium in Lake Koocanusa and 3.1 µ instantaneous
g/
8.5 mg/kg dw whole body, and duration of the fish tissue standards a a average and hall not be
mainstem. See ARM 17.30.632. The frequency
computed as a 30-day
measurements, not to be exceeded. he ontaverage.columner standard is comp
exceeded more than once in three years,
2020 and codified in MCA 17•�0.2021.Two petitions were
uality
adopted into state law on December ct EPA on February
The standards were adop site-Specific water column standard for
Agency
standards were approved by the U.S. Environmental Prstringency determinattion for the site-sp determination
filed to the board calling for a review of the n February
25,2022 the board reversed its previous stringency arable
Lake Koocanusa in ARM 17.30.632(7)( ) 75-5-203 by making the written findings set forth
-s ecific water column standard for Lake Koocanusa is more stringent than comparable
and determined that the site p I with MCA
The draft written findings are located on the department's website at:
federal guidelines. he department will,therefore,comp
in 75-5-203(2),MCA.
htt s: de .mt. ov ublic water- ublic. 1520 East Sixth
a public hearing will be held in room 111 of the Metcalf Building also join the meeting
On April 26,2022,at 10:00 a.m., p artment's draft written findings.You
uuca n on how to attend
department's website,including
Avenue, Helena, Montana,to hear comments on the ep
virtually via Zoom. More information is available on the re an alternative accessible for
of
ublic water- ublic.The department will make reasonable accommodations or
at htt S. de .mt. ov pro
remotely, participate in this rulemaking p
persons with disabilities who wish to p
this notice. at the hearing.Written data,views,or
or in writing, P.O. Box
or
Paralegal,Department of Environmental Quality, ov no later
You are invited to submit data,ed to Catherine ne Armstrong orally filed to Catherine.Amrstron�2 m@� fore
arguments may also be submitted 406 444-4386;or a ma postmarked on or be
200901,Helena, Montana 59620-0901;faxed to ( )
May 4,2022.To be guaranteed consideration,mailed comments must be p
than 5.00 p.m.on Y
that date.
Sincerely,
Myla Kelly
Section Supervisor
water Quality Standards&Modeling Section
«in9 ton,Director I P.O.Box 200901 I Helena,MT 59620-0901 I (406)444-2544 I wwv'r.deq.mt.gov
Greg Gianforte,Governor I Chris Do