NC0000175_North Toe River Notes_19990512

Additional notes:
The North Toe River is not listed on the 1998 303(d) impaired streams list.
Biological info: Per the 1995 French Broad River Basin, indicated that biological
monitoring in 1992 had improved from Poor in 1989 to Good -Fair. Talked with Trish
Macpherson on 5/4/99. Had sampled North Toe R. at three sites in 1997 with the
following results:
North Toe R. @ Ingalls (above the mines) - Excellent
North Toe R. @ Penland (below the mines) - Good
North Toe R. @ Loafers Glory (further downstream below the mines) - Good
Told her instream compliance data showed instream values above the standard of 1.8
mg/l. Said that maybe the Fl instream was not in high enough concentrations to be toxic
to the benthos.
5/5/99 - Made phone calls to Forrest and Matt Matthews to see whether they had any
comments on the Unimin letter and if they wanted to incorporate them into the response.
post-Ito Fax Note 7671
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Active Fluoride Dischargers to the North Toe River
Unimin Corp. Unimin Schoolhouse Feldspar Corp. K -T Feldspar
NC0000175 NC0000361 NC0000353 NC0000400
Permitted Ow
3.6 MGD
2.16 MGD
3.5 MGD
1.73 MGD
Average Ow ('98 -'99)
0.904 MGD
0.623 MGD
2.85 MGD
0.197 MGD
Permitted Fluoride
109 Ibs/day
109 Ibs/day
225 Ibs/day
132 Ibs/day
Average Fl ('98 -'99)
73 Ibs /day
53.2 Ibs /day
217 Ibs /day
45.5 Ibs /day
Max. Fluoride ('98 -'99)
413 lbs/day
81 Ibs /day
404 Ibs /day
183 Ibs/day
Monthly FI violations
none
none
3
none
('98 -'99)
247 Ibs/day
231.5 lbs/day
230.3 Ibs/day
(3,6,8/98)
Permitted Fluoride
109 Ibs/day
109 Ibs/day
225 Ibs/day
132 lbs/day
Average Fl ('97 -'98)
80 lbs/day
39 Ibs/day
221 Ibs/day
65 Ibs/day
Max. Fluoride ('97 -'98)
216 Ibs /day
69 Ibs/day
506 Ibs /day
284 Ibs /day
Monthly FI violations
none
none
6
none
('97 -'98)
Note: The Feldspar Corp. has had permit compliance issues for the past two years. March 1998 through Feb. 1999
there were violations for BODS (1), pH (2) and Fluoride (3). March 1997 through Feb. 1998, there were violations for
BOD5 (2), TSS (2), pH (3), and Fluoride (6). Feldspar is also at 81% of their design flow.
Note 2: Unimin Schoolhouse (NC0000361) started discharging fluoride in March 1997, at that time the fluoride limit for Unimin Corp
(NC0000175) was decreased to 109 Ibs/day per previous permitting agreement.