HYDRO29240

• Permit No: C1996083
• IBM Index Class Name: Hydrology
• Doc Date: 12/13/2002
• Doc Name: Updated Discharge Permit Copy
• From: J.E. Stover & Associates
• To: DMG
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

PART I
Page No. 13
Permit No. CO-0044776
' E. GENERAL MONITORING, SAMPLING AND REPORTING REQUII2EMENTS
2. R@presentative Samulin¢ tcontinuedl
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.
3. Analytical and Sam~g_Methods for Monitoring
The, permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and
indicated pollutant monitoring methods. A]] sampling shall be performed by the permittee according to specified ,
methods in 40 CFR Part 136; methods approved by EPA gursuant to 40 CFR Part 136; or methods approved by the
Division, in the absence of a method specified in or approved pursuant [0 40 CFR 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 pazameters not limited, is within the testing range of
another approved mehod. 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 petmittee shall report "less than {the detectable limit)," as appropriate. Such reports shall no[
be considered as violations of the permit limit.
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 ml/1.
4. c r
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 dischazge as indicated in
40 CFR 122.44 (i)(1}(iii).
The permittee shall retain for a minimum of three 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 dam 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.
5. mow Measuring_Device
If not already a part of the permitted facility, within ninety days after the effective date of the permit, a flow
measuring device shall be installed to give representative values of effluent quantities at the respective dischazge
points. Unless specifically exempted, or modified in Part I.B.S of this permit, a flow measuring device will be
applicable at all designated discharge points.
At the request of the Division, the permittee shall show proof of the accuracy of any flow-measuring device used
obtaining data submitted in the monitoring report. The flow-measuring device must indicate values within ten
percent of the actual flow being discharged from the facility.