2015-03-11_PERMIT FILE - C1981038A ‎(2)‎

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 3/11/2015
• Section_Exhibit Name: VOLUME 8A - NPDES Permit
• Media Type: D
• Archive: Yes

PART I
Page No. 19
Permit No. COG-850000
If the permittee monitors at the point of discharge any pollutant limited by the permit more frequently than required by the
permit, using approved test procedures or as specified in the permit, the result of this monitoring shall be included in the
calculation and reporting of data to the Division.
4. Analytical and Sampling Methods for Monitoring
The permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and
indicated pollutant monitoring methods. All sampling shall be performed by the permittee according to specified methods
in 40 C.F.R. Part 136; methods approved by EPA pursuant to 40 C.F.R. Part 136; or methods approved by the Division, in
the absence of a method specified in or approved pursuant to 40 C.F.R. part 136. The analytical method selected for a
parameter shall be the one that can measure the lowest detected limit for that parameter unless the permit limitation or
stream standard for those parameters not limited, is within the testing range of another approved method. When requested
in writing, the Division may approve an alternative analytical procedure or any significant modification to an approved
procedure.
When the most sensitive analytical method which complies with this part, has a detection limit greater than or equal to the
permit limit, the permittee shall report "less than (the detectable limit)," as appropriate. Such reports shall not be
considered as violations of the permit limit. The present lowest practical quantitation limits (PQL) for specific parameters
(which have limitations that are, in some cases, less than or equal to the detection limit) are as follows:
Effluent Parameter PQLs, µg/1
Arsenic 1
Cadmium 0.06
Chromium 2
Chromium, 2
Hexavalent
Copper 5
Cyanide 10
Iron 10
Lead 1
Manganese 2
Mercury 0.003
Nickel 3
Phenols 15
Selenium 1
Silver 0.5
Uranium 1
Zinc 10
These limits apply to the total recoverable or the potentially dissolved fraction of metals.
For hexavalent chromium, samples must be unacidified so dissolved concentrations will be measured rather than
potentially dissolved concentrations. The procedure for determining settleable solids is contained in 40 CFR 434.64. The
method detection limit for measuring settleable solids under this part shall be 0.4 mUl.
5. Records
The permittee shall establish and maintain records. Those records shall include the following:
a. The date, type, exact location, and time of sampling or measurements;
b. The individual(s) who performed the sampling or measurements;
c. The date(s) the analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used;
f. The results of such analyses; and
g. Any other observations, which may result in, an impact on the quality or quantity of the discharge as indicated in 40
CFR 122.44 (I)(1)(iii).
The permittee shall retain for a minimum of three (3) years records of all monitoring information, including all original
strip chart recordings for continuous monitoring instrumentation, all calibration and maintenance records, copies of all
reports required by this permit and records of all data used to complete the application for this permit. This period of
retention shall be extended during the course of any unresolved litigation regarding the discharge of pollutants by the
permittee or when requested by the Division or EPA.