HYDRO23579

• Permit No: C1981071
• IBM Index Class Name: Hydrology
• Doc Date: 2/14/2001
• Doc Name: MEMO CYCC
• From: JON KUBIC
• To: JANET BINNS
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

COLORADO DEPARTMENT OF PUBL/C HEALTH AND ENV/RONMENT, Water Qun[ity Control Division
Rationale - Pnge 3, Permit No. CO-0027164
Table /V--/ -- Self-Monitoring Resulss jot Outfall 001
Parameter Reported Previous No. of
ConcenlraHons Permit Limitation
Avg/Min/Max Limitation Excursions
Flow, MGD 0.75/0.14/2.75 report NA
Total Suspended Solids, ntg/~
30-day avg 5/0/18 35 0
daily mar 9/0.5/25 70 0
Settleable Solids, mf/7 0.1/0/0.2 0.5 0
Oil & Grease, mg/P NV/NV/NV ]0 0
pH, s. u. -/7.48/8.27 6.5-9.0 0
Conductivity, untlto/cm 3113/2003/3706 6485 0
Whole Effluent Toxicity, Acute
Ceriodnohnia sp. -/75/> 100 > 100 1
Fathead Minnow -/50/> 100 > 100 5
Copper (PD), ntg/P
30-day avg 0.0023/0/0.04 0.073 0
daily mar 0.0046/0/0.06 0.13 0
Iron (TR), mg/Q 0.16/0.07/0.35 /.0 0
Manganese (77t), mg/P 0.2/0.05/0.57 report NA
Silver (PD), mg/P 0.0001/0/0.001 report NA
Table IV-2 -- Self-Monitoring Results for Outfa[[ 002 (Four Reporting Period Only)
Parameter Reported Previous No. of
Concentrations Permit Limitation
Limitation Excursions
Flow, MGD 0.0049/0.00!/0.014 report NA
Total Suspended Solids, ntg/P
30-day avg /.2s/0/5 35 0
daay max s/s/s 70 0
Settleable Solids, mC/C 0.13/0.1/0.2 0.5 0
Oil & Grease, mg/P NV/NV/NV 10 0
pH, s. u. -/759/8.2/ 6.5-9.0 0
Conductivity, umho/cnt 350 report NA
/ton (Iota[), mg/P
30-dayavg /.1//0.68/1.83 3.s 0
dnily,nax /.11/0.68/1.83 70 0
Table IV-3 -- Sell-Monitorin¢ Results for Outfall 003
Parameter
Permit
Limitation
Flow, MGD 0.029/0.0008/0.1476 report NA
Total Suspended Solids, ,ng/7
30-day avg 23.8/0/177 35
daily max 40/5/608 70 *
Settleable Solids, nth/~ 0.27/0/3.0 O.s
Oi! & Grease, mg/P NV/NV/NV 10 0
pH, s. u. -/7.18/8.08 6.5-9.0 0
Conductivity, umho/cm 3206/2!60/4310 report NA
Iron (Total), mg/P
30-day avg 0.42/0.!2/1.93 3.5 0
daily rnax 0.48/0.12/2.25 7.0 0