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o Chemicals: The use of chemicals in waters that will or may be discharged is not allowed unless expressly authorized
<br />by the Division. The Division has reviewed the MSDS sheets for 2 chemicals that were submitted with the
<br />application. A summary of the review is shown in the following table.
<br />Chemicals deemed acceptable for use in waters that will or may be discharged to waters of the State are
<br />acceptable only when used in accordance with all state and federal regulations, and in strict accordance with the
<br />manufacturer's size- specific instructions.
<br />o Anddlegradation: 4n Antidegradation review does not apply to this permit as this is a temporary discharge, and
<br />therefore exempt from an antidegradation review. If this is to become a more permanent discharge point, the
<br />permittee will be required to amend the individual permit to include this outfall. For this reason, this certification
<br />will expire in one year.
<br />General Information:
<br />• Permit Action Fees: The fee `or this Modification is $429 based on 55% of the annual fee of $780 [Category 7, Subcategory 5
<br />Coal Mining per CRS 25- 8 -SO2]. The invoice will be sent to the legal contact shortly.
<br />• Changes to the Certification —Any changes that need to be made to the certification page — changes in outfalls, monitoring
<br />requirements, etc., must be submitted using the "Permit and Certification Modification form" available on our website:
<br />coloradowaterpermits.con, and signed by the legal contact.
<br />• Discharge Monitoring Report (DMR) forms will be mailed out within the next month. Reports must be submitted quarterly
<br />as long as the certification is in effect. The permittee shall provide the Division with any additional monitoring data on the
<br />permitted discharge collected for entities other than the Division. This will be supplied to the Division within 48 hours of
<br />the receipt of the data by the permittee. If forms have not been received, please contact the Division at 303 - 692 -3517.
<br />• Sampling Requirements Sampling shall occur at a point after treatment, or after the implementation of any Best
<br />Management Practices (BMPs). If BMPs or treatment are not implemented, sampling shall occur where the discharge
<br />leaves control of the perm ttee, and prior to entering the receiving stream or prior to discharge to land. Samples must be
<br />representative of what is entering the receiving stream.
<br />• Stormwater Management Plan — See Part I.C. of the permit for storm water requirements
<br />At the time of application. the permittee certified that they had developed and implemented a Stormwater Management
<br />Plan (SWMP) for this facility. The permittee shall amend the SWMP whenever there is a change in design, construction,
<br />operation, or maintenance which has a significant effect on the potential for the discharge of pollutants to the waters of the
<br />State, or if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater
<br />discharges associated with mining activity. A copy of the SWMP must be kept on site and provided to the Division upon
<br />request.
<br />• Best Management Practices - The permittee shall implement and maintain the Best Management Practices (BMP) for the
<br />prevention of erosion and the control of solid and liquid pollutants due to the discharge. BMPs include various options,
<br />such as: modification of the pipe discharge structure to disperse flows; containment of water by berms or other comparable
<br />structures; the use of geocloth, filter fabric, or plastic sheeting for protection of containment structures; rip -rap; and /or any
<br />other approved methods.
<br />• Termination requirements - nor termination of permit coverage, the permittee must initiate this by sending the "CDPS
<br />Permits and Authorization Termination Form." This form is also available on our web site and must be signed by the legal
<br />contact.
<br />• Analytical and Sampling Methods for Monitoring:
<br />The permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and indicated
<br />pollutant monitoring methods. All sampling shall be performed by the permittee according to specified methods in 40 C.F.R.
<br />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
<br />method specified in or approved pursuant to 40 C.F.R. Part 136.
<br />The analytical method and PQL selected for a parameter shall be the one that can measure at or below the numeric
<br />effluent limit. If all specified analytical methods and corresponding PQLs are greater than the numeric effluent limit, then
<br />Chemical Name
<br />Purpose Constituents of Concern
<br />NALCO 8157 & 8185
<br />Polymer for water treatment plant
<br />None
<br />Potassium aluminum sulfate
<br />Settle solids
<br />None
<br />(hydrated) Alum
<br />Chemicals deemed acceptable for use in waters that will or may be discharged to waters of the State are
<br />acceptable only when used in accordance with all state and federal regulations, and in strict accordance with the
<br />manufacturer's size- specific instructions.
<br />o Anddlegradation: 4n Antidegradation review does not apply to this permit as this is a temporary discharge, and
<br />therefore exempt from an antidegradation review. If this is to become a more permanent discharge point, the
<br />permittee will be required to amend the individual permit to include this outfall. For this reason, this certification
<br />will expire in one year.
<br />General Information:
<br />• Permit Action Fees: The fee `or this Modification is $429 based on 55% of the annual fee of $780 [Category 7, Subcategory 5
<br />Coal Mining per CRS 25- 8 -SO2]. The invoice will be sent to the legal contact shortly.
<br />• Changes to the Certification —Any changes that need to be made to the certification page — changes in outfalls, monitoring
<br />requirements, etc., must be submitted using the "Permit and Certification Modification form" available on our website:
<br />coloradowaterpermits.con, and signed by the legal contact.
<br />• Discharge Monitoring Report (DMR) forms will be mailed out within the next month. Reports must be submitted quarterly
<br />as long as the certification is in effect. The permittee shall provide the Division with any additional monitoring data on the
<br />permitted discharge collected for entities other than the Division. This will be supplied to the Division within 48 hours of
<br />the receipt of the data by the permittee. If forms have not been received, please contact the Division at 303 - 692 -3517.
<br />• Sampling Requirements Sampling shall occur at a point after treatment, or after the implementation of any Best
<br />Management Practices (BMPs). If BMPs or treatment are not implemented, sampling shall occur where the discharge
<br />leaves control of the perm ttee, and prior to entering the receiving stream or prior to discharge to land. Samples must be
<br />representative of what is entering the receiving stream.
<br />• Stormwater Management Plan — See Part I.C. of the permit for storm water requirements
<br />At the time of application. the permittee certified that they had developed and implemented a Stormwater Management
<br />Plan (SWMP) for this facility. The permittee shall amend the SWMP whenever there is a change in design, construction,
<br />operation, or maintenance which has a significant effect on the potential for the discharge of pollutants to the waters of the
<br />State, or if the SWMP proves to be ineffective in achieving the general objectives of controlling pollutants in stormwater
<br />discharges associated with mining activity. A copy of the SWMP must be kept on site and provided to the Division upon
<br />request.
<br />• Best Management Practices - The permittee shall implement and maintain the Best Management Practices (BMP) for the
<br />prevention of erosion and the control of solid and liquid pollutants due to the discharge. BMPs include various options,
<br />such as: modification of the pipe discharge structure to disperse flows; containment of water by berms or other comparable
<br />structures; the use of geocloth, filter fabric, or plastic sheeting for protection of containment structures; rip -rap; and /or any
<br />other approved methods.
<br />• Termination requirements - nor termination of permit coverage, the permittee must initiate this by sending the "CDPS
<br />Permits and Authorization Termination Form." This form is also available on our web site and must be signed by the legal
<br />contact.
<br />• Analytical and Sampling Methods for Monitoring:
<br />The permittee shall install, calibrate, use and maintain monitoring methods and equipment, including biological and indicated
<br />pollutant monitoring methods. All sampling shall be performed by the permittee according to specified methods in 40 C.F.R.
<br />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
<br />method specified in or approved pursuant to 40 C.F.R. Part 136.
<br />The analytical method and PQL selected for a parameter shall be the one that can measure at or below the numeric
<br />effluent limit. If all specified analytical methods and corresponding PQLs are greater than the numeric effluent limit, then
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