HYDRO28507

• Permit No: C1981010
• IBM Index Class Name: Hydrology
• Doc Date: 7/1/1991
• Doc Name: CDPS RATIONALE- AMENDMENT 1
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division
Rationale -Page 6,. Permit No. CO-0032115
Oil & Grease, mg/l 1 None Visible f0 0
pH, s.u. I -/8.0/8.8 6.5-9.0 0
Total Dissolved Solids / 520 None
Table V-6 - Selj-Monitoring Results jor Oatja/l 011
No. of Reported Previous No. of
.. ~ Ranmm~o /~nn~snlmlinne Pormil /imifnhnn
Flow, MGD
30day avg I 0.071! A'one -
daily max 1 0.6401 A'ane -
TSS, mg/l
30day avg I 74 35 *"
daily max I 74 70 *•
Total Iron, mg/P
30-day avg 1 2.0 3.S 0
daily mar 1 2.0 7.0 0
Settleable Solids, mP/L / <0./ 0.5 0
Oi! & Grease, mg/P t None Visible 10 0
pH, s.u. 1 -/7.8/8.3 6.5-9.0 0
Total Dissolved Solids, mg/P I 440 none -
Whole EJjiuent Tonicity, Acute
Cerioda hnia dubia 1 > 100% > 100% 0
ate meow 1 _ _ > 100% > 100% 0
Table V-7 -Self-Monitoring Results Jor Outjall 013
No. of Reported .Previous No. of
Reportutg ' ... Concentrations Permit limitahan .
Parameter Periods Av¢/Min/Man Iimitadon Excursions
Flow, MGD
30-day avg 1 0.00!5 None -
daily max / 0.0194 Norse -
TSS, mg/l
30day avg 1 21 35 0
daily man 1 21 70 0
Total Iron, mg/l
30day avg 1 0.67 3.5 0
daily max I 0.67 7.0 0
Settleable Solids, ml/t I <0.1 0.5 0
Oil do Grease, mg/l l None Visible 10 0
pH, s. u. I -/8.0/8.0 6.5-9.0 0
Tonal Dissolved Solids, mg/[ I 830 none -
Whole EfJfuent Tonicity, Acute
Cerioda Irma dubia 1 > 100% > ]00% 0
ate tnnow I >100%a >!00% 0