NC0000400_ Fact Sheet_19920101

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N. C. DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
ENVIRONMENTAL MANAGEMENT COMMISSION
FACT SHEET
APPLICATION FOR
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
PERMIT TO DISCHARGE TREATED WASTEWATER
Application Number NC0000400 Date
1. SYNOPSIS OF APPLICATION
a. Name and Address of Applicant
K-T Feldspar Corporation
Post Office Box 309
Spruce Pine, North Carolina 28777
b. Description of Applicant' s Operation
Production of feldspar, mica, quartz and sand.
c. Production Capacity of Facility
1000 tons/day of raw ore
d. Applicant' s Receiving Waters
North Toe River
Classification - "C-Trout"
For a sketch showing the location of the discharge( s) , see
Attachment A.
e. Description of Existing Pollution Abatement Facilities
The wastewater treatment f_arilit es consists of three
influent pump stations, polymer addition, pH adjustment, rake
classifier, three inorganic solids settling basins (two
basins used continuously in series while one basin is
cleaned) , effluent flow measuring equipment and wastewater
recycle facilities.

f. Description of Discharges (as reported by applicant)
Discharge 001 - Total Facility Discharge
Pollutants which are present in significant quantities or which
are subject to effluent limitation are as follows:
Effluent Characteristic Reported Load
(Specify Units)
Average Maximum
Flow 0. 226 MGD 0. 530 MGD
Total Suspended Solids 86. 5 lbs/day 302 lbs/day
Fluorides 46 lbs/day 107 lbs/day
pH min. 4.0 s.u. max 10.3 s.u.
Turbidity 22 . 8 NTU 70 NTU
Settleable Matter <0. 1 m1/1
Chronic Toxicity All tests results for 1990 & 1991
indicate a pass.
Effluent monitoring data reported by K-T Feldspar during
November 1, 1990 - October 31, 1991 .

2B. PROPOSED FINAL EFFLUENT LIMITATIONS
Effluent Characteristic Discharge Limitation
(lbs/day) Other Limitations
Daily Daily (Specify Units)
Average Maximum Average Maximum
Flow 1. 73 MGD 2 .02 MGD
Total Suspended Solids 1240. 0 2480.0
Fluorides 109 . 0 218.0
Settleable Solids
Turbidity (See below)
pH 6.0 s.u. 10.0 s.u.
Chronic Toxicity Pass/fail at 6. 6% - See Attachment B
This discharge shall not increase turbidity in the receiving water more
than 10 NTU. If the turbidity exceeds 10 NTU. If the turbidity exceeds
10 NTU to natural conditions, the discharge shall not cause any increase
in turbidity.

• \ • K—T FELDSPAR CORPORATION
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• ATTACHMENT A
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K-T FELDSPAR CORPORATION
` ATTACHMENT B
Chronic Toxicity Testing Requirement.
The effluent discharge shall at: no time exhibit chronic toxicity
using test procedures outlined in :
1 . The North Carolina Ceriodaphnia chronic effluent
bioassay procedure (North Carolina Chronic Bioassay
Procedures - Revised *February, 1987) or subsequent
versions.
The effluent concentration at which there may be no observable
inhibition of reproduction or significant mortality is 6. 6%
(defined as treatment two in the North Carolina procedure
document) . The permit holder shall perform quarterly monitoring
using this procedure to establish compliance with permit
condition. The first test will be performed within thirty days
from issuance of this permit during the months of February, May,
August, and November. Effluent sampling for this testing shall be
performed at the NPDES permitted final effluent discharge below
all treatment processes.
All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Monitoring
Form (MR-1) for the month in which it was performed, using the
appropriate parameter code TGP3B. Additionally, DEM Form AT-1
(original) is to be sent to the following address:
Environmental Sciences Branch
North Carolina Division of Environmental Management
4401 Reedy Creek Road
Raleigh, North Carolina 27607
Test data shall be complete and accurate and include all
supporting chemical/physical measurements performed in association
with the toxicity tests, as well as all dose/response data. Total
residual chlorine of the effluent toxicity must be measured and
reported if chlorine is employed for disinfection of the waste
stream.
Should any test data from this monitoring requirement or tests
performed by the North Carolina Division of Environmental
Management indicate potential impacts to the receiving stream,
this permit may be reopened and modified to include alternate
monitoring requirements or limitations.
Note: Failure to achieve test conditions as specified in the
cited document, such as minimum control organism survival and
appropriate environmental controls, shall constitute an invalid
tests and will require immediate retesting (within 30 days of
initial monitoring event) . Failure to submit suitable test
results will constitute non-compliance with monitoring
requirements.