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In TRIM
<br />COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division
<br />Fact Sheet- Page 2, Permit No. C00000906
<br />Table II -1. Outfall information
<br />The locations provided above will serve as the points of compliance for this permit. They are appropriate as they
<br />are located after treatment (where applied) and prior to entering the receiving stream.
<br />III. SUMMARY OF MAJOR CHANGES FROM LAST RENEWAL
<br />A. General Changes
<br />• Domestic waste is no longer treated at pond 006, and instead, is now transported offsite. Therefore, outfall
<br />033A (domestic sewage, internal outfall) and associated groundwater monitoring wells 050A, B, C Et D are not
<br />included in this permit renewal.
<br />• Outfall 009 was included in the previous permit; however, the pond and associated outfall were not
<br />constructed during the previous permit term and are not planned for construction during this permit term.
<br />Therefore, outfall 009 is not included in this permit renewal.
<br />• Process water from the coal preparation plant is no longer routed to pond 006 and is now hauled offsite.
<br />• Tiered flow rates no longer apply to outfall 001 (formerly 001 A, 001B, 001C representing three flow tiers). The
<br />30 -day average flow of outfall 001 is not to exceed 1.08 MGD.
<br />• New permit limitations and compliance schedules with interim limitations are applicable to outfall 001 for
<br />dissolved cadmium, dissolved copper, total mercury, dissolved selenium, and boron.
<br />• New reporting requirements applicable to outfall 001 for total recoverable chromium, dissolved manganese,
<br />dissolved zinc, chloride, sulfide and temperature.
<br />• Iron limitations are more stringent at outfall 001. A compliance schedule is included for outfall 001.
<br />• New EC/SAR limitations and associated reporting for calcium, magnesium, sodium, and bicarbonate are
<br />applicable to outfall 001. A compliance schedule is included.
<br />Feature
<br />!Fl wn
<br />Receiving
<br />Applicable
<br />Outfall
<br />Name
<br />Latitude N
<br />Longitude W
<br />Wastewater Source
<br />Water
<br />MGD
<br />Subpart
<br />Middle Fork
<br />001
<br />Pond 001
<br />37.15705°
<br />104.967783°
<br />Mine water
<br />1.08
<br />Purgatoire
<br />D
<br />River
<br />Surface runoff from reclaimed
<br />Middle Fork
<br />004
<br />Pond 004
<br />37.1565°
<br />104.97263°
<br />refuse pile (Phase I bond released)
<br />NA
<br />Purgatoire
<br />H
<br />River
<br />Surface runoff from coal stock
<br />piles, coal prep plant, internal
<br />Middle Fork
<br />007
<br />Pond 007
<br />37.159116°
<br />104.95698°
<br />haul roads, equipment laydown
<br />NA
<br />Purgatoire
<br />B
<br />area, top soil, and development
<br />River
<br />waste piles
<br />Surface runoff from coal prepMiddle
<br />Fork
<br />008
<br />Pond 008
<br />37.16038°
<br />104.96246°
<br />plant refuse disposal area
<br />NA
<br />Purgatoire
<br />B
<br />River
<br />Surface runoff from east small
<br />Middle Fork
<br />010
<br />Stormwater
<br />37.159098°
<br />104.956875°
<br />area exemption (SAE) area
<br />NA
<br />Purgatoire
<br />D
<br />(staging/ material storage area)
<br />River
<br />011
<br />Stormwater
<br />37.15896°
<br />104.963606°
<br />Surface runoff from north topsoil
<br />NA
<br />Middle Fork
<br />Purgatoire
<br />H
<br />SAE
<br />River
<br />Surface runoff from west
<br />Middle Fork
<br />012
<br />Stormwater
<br />37.157327°
<br />104.968446°
<br />reclaimed SAE (Phase I bond
<br />NA
<br />Purgatoire
<br />H
<br />released)
<br />River
<br />The locations provided above will serve as the points of compliance for this permit. They are appropriate as they
<br />are located after treatment (where applied) and prior to entering the receiving stream.
<br />III. SUMMARY OF MAJOR CHANGES FROM LAST RENEWAL
<br />A. General Changes
<br />• Domestic waste is no longer treated at pond 006, and instead, is now transported offsite. Therefore, outfall
<br />033A (domestic sewage, internal outfall) and associated groundwater monitoring wells 050A, B, C Et D are not
<br />included in this permit renewal.
<br />• Outfall 009 was included in the previous permit; however, the pond and associated outfall were not
<br />constructed during the previous permit term and are not planned for construction during this permit term.
<br />Therefore, outfall 009 is not included in this permit renewal.
<br />• Process water from the coal preparation plant is no longer routed to pond 006 and is now hauled offsite.
<br />• Tiered flow rates no longer apply to outfall 001 (formerly 001 A, 001B, 001C representing three flow tiers). The
<br />30 -day average flow of outfall 001 is not to exceed 1.08 MGD.
<br />• New permit limitations and compliance schedules with interim limitations are applicable to outfall 001 for
<br />dissolved cadmium, dissolved copper, total mercury, dissolved selenium, and boron.
<br />• New reporting requirements applicable to outfall 001 for total recoverable chromium, dissolved manganese,
<br />dissolved zinc, chloride, sulfide and temperature.
<br />• Iron limitations are more stringent at outfall 001. A compliance schedule is included for outfall 001.
<br />• New EC/SAR limitations and associated reporting for calcium, magnesium, sodium, and bicarbonate are
<br />applicable to outfall 001. A compliance schedule is included.
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