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
Page 11 of 47
Permit No.: C00000213
L Procedures for regularly inspecting, testing, maintaining, and repairing all industrial equipment and systems to
avoid situations that may result in leaks, spills, and other releases of pollutants in stormwater discharged to
receiving waters.
ii. Procedures for plainly labeling containers that could be susceptible to spillage or leakage to encourage proper
handling and facilitate rapid response if spills or leaks occur;
iii. Preventative measures such as barriers between material storage and traffic areas, secondary containment
provisions, or procedures for material storage and handling;
iv. Procedures for expeditiously stopping, containing, and cleaning up leaks, spills, and other releases. Employees who
may cause, detect, or respond to a spill or leak must be trained in these procedures and have necessary spill
response equipment available; and
v. Procedures for notification of appropriate facility personnel, emergency response agencies, and regulatory
agencies. Contact information must be in locations that are readily accessible and available.
e. Erosion and Sediment Controls
The permittee must stabilize exposed areas and contain runoff using structural and/or non-structural control measures to
minimize onsite erosion and sedimentation, and the resulting discharge of pollutants. Among other actions taken to meet
this effluent limit, flow velocity dissipation devices must be placed at discharge locations and within outfall channels where
necessary to minimize erosion and/or settle out pollutants.
f. Management of Runoff
The permittee must divert, infiltrate, reuse, contain, or treat stormwater runoff, in a manner that minimizes pollutants in
stormwater discharges from the site.
g. Salt Storage Piles or Piles Containing Salt
The permittee must enclose or cover storage piles of salt, or piles containing salt, used for deicing or other commercial or
industrial purposes, including maintenance of paved surfaces, and implement appropriate measures to minimize exposure
resulting from adding to or removing materials from the pile.
h. Employee Training
The permittee must develop and implement a training program for employees. Training must be conducted at least
annually, and must address the following, as applicable to the trainee's activities: the site-specific control measures used to
achieve the permit effluent limits, components and goals of the SWMP, monitoring and inspection procedures, and other
applicable requirements of the permit. At a minimum, the following individuals must be trained:
i. Employee(s) overseeing implementation of, revising, and amending the SWMP.
ii. Employee(s) performing installation, inspection, maintenance, and repair of control measures.
iii. Employee(s) who work in areas of industrial activity subject to this permit.
iv. Employee(s) who conduct stormwater discharge monitoring required by this permit.
L Waste, Garbage and Floatable Debris
The permittee must minimize the discharge of waste, garbage, and floatable debris from the site by keeping exposed areas
free of such materials or by intercepting them before they are discharged.
j. Dust Generation and Vehicle Tracking of Industrial Materials.
The permittee must minimize generation of dust and off-site tracking of raw, final, or waste materials.
D. SPECIFIC MONITORING REQUIREMENTS
1. Chronic WET Testing —Outfall 013
a. General Chronic WET Testing and Reporting Requirements
The permittee shall conduct the chronic WET test using Ceriodophnia dubio and Pimephales promelas, as a static
renewal 7 -day test using three separate grab samples. The permittee shall conduct each chronic WET test in
accordance with the 40 CFR Part 136 methods described in Short-term Methods for Estimating the Chronic Toxicity of