2018-03-08_HYDROLOGY - C1981008

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 3/8/2018
• Doc Name: CDPS/NPDES Permit
• From: Colorado Department of Public Health and Environment
• To: DRMS
• Email Name: TNL
• Media Type: D
• Archive: No

PART I
Page 21 of 47
Permit No.: CO0000213
a) The date of any evaluation;
b) A description of the evaluation criteria used;
c) A list of the outfalls or onsite drainage points that were directly observed during the evaluation;
d) The different types of non-stormwater discharge(s) and source locations; and
e) The action(s) taken, such as a list of control measures used to eliminate unauthorized discharge(s), if any were
identified.
g. Inspection Procedures and Documentation: The permittee shall document inspection procedures, and maintain such
procedures and other documentation with the SWMP, as follows:
i. The permittee shall document procedures for performing the facility inspections required of the permit (see
INSPECTIONS). Procedures must identify:
a) Person(s) or positions of person(s) responsible for inspection;
b) Schedules for conducting inspections; and
c) Specific items to be covered by the inspection, including inspection schedules for specific outfalls.
ii. The permittee shall maintain inspection documentation with the SWMP as required by this permit.
h. Monitoring Procedures and Documentation: The permittee shall document monitoring procedures, and maintain such
procedures and other documentation with the SWMP, as follows:
i. The permittee shall document procedures for performing the monitoring required by the permit.
ii. For each type of monitoring, procedures must identify:
a) Locations where samples are collected, and outfall identification by its unique identifying number;
b) Staff responsible for conducting stormwater sampling;
c) Procedures for sample collection and handling, including any deviations from sampling within the first 30
minutes of a measurable storm event;
d) Parameters for analysis, holding times and preservatives, analytical methods, and laboratory quantitation
levels;
e) Procedures for sending samples to a laboratory;
f) The numeric control values applicable to discharges from each outfall.
iii. Permittees must maintain Quarterly Visual Assessment with the SWMP.
L Corrective Action Documentation: The permittee must maintain a copy of all corrective actions documentation for
actions taken consistent with of this permit (see CORRECTIVE ACTIONS) with the facility SWMP.
J. GENERAL MONITORING, SAMPLING AND REPORTING REQUIREMENTS
1. Representative Samclin
Samples and measurements taken for the respective identified monitoring points as required herein shall be representative of
the volume and nature of the monitored discharge. All samples shall be taken at the monitoring points specified in this permit
and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance.
Monitoring points shall not be changed without notification to and approval by the Division.
2. Analvtical and Sam Wine Methods for Monitoring and Reportin
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.