HYDRO24575

• Permit No: C1981019
• IBM Index Class Name: Hydrology
• Doc Date: 2/4/1999
• Doc Name: RATIONALE FOR PUBLIC NOTICE
• Permit Index Doc Type: NPDES
• Media Type: D
• Archive: No

COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT, Water Quality Control Division
Rarionale -Page 7, Permit No. CO-0045161
Table V-2 -Self-rYlonitoring Results for Outfa11002
No. Of ;Reported Previous No. of
Reporting Concentrations Permit .. Limitation
Parameter Periods Avg/Min/Maz Limitation Excursions
Flow MGD
30-day avg
S
0.138/0.06/0.316
none -
daily maz S 0.198/0.06/0.316 none -
TSS, mg/['
30-day avg 3 20, 4/11.3/32 35 0
daily maz 3 28, 0/18/34 70 0
Oil & Grease, mg/P 2 NV/NV/NV 10 0
pH, s. u. (min/max) S -/7.6/9.5 6.5-9.0 1
Senleable Solids, mP/P 5 <0.3/<0.1/<O.S 0.5 0
TDS, mg/P S . 2582/1340/3740 none -
Toral Iron, mg/F
30-day avg S 0.94/0.323/2.1 3.5 0
ifnily mrrr S 7 ?/~/n 4~/3 37 7 n (1
Table V-3 -Self-Monitoring Results for Outfall 003
,.
o:
. ..
Reparte
evwus :
a.:of'
Reporting.: Ganeentralions : :.: : Permit:::. Limitation .
Parameter Periodi . Limitation Excursions .
Flow MGD
30-day avg 3 0.149/0.123/0.168 none -
daily max 3 0.149/0.123/0.168 none -
TSS, mg/P
30-day avg 3 <IS/<S/26 35 0
daily max 3 <IS/<5/26 70 0
Oil & Grease, mg/P 3 NV/NV/NV !0 0
pH, s. u. (min/max) 3 -/78/9.0 6.5-9.0 0
Senleable Solids, mP/P 3 <0.4/<0.1/<0.5 0.5 0
TDS, mg/P 3 1257/940/1700 none -
Toral Iron, mg/! , , ,
Table V11-self-Monitoring Results for Outfall 004
Nv.:Of.. Reported.. Previors No. of:
;.. :.:.
Reporting ': ... Concenli-atiniis : Permii Limitation
Parameter Periods. Avg/Min/Maz Limitatiari. F.xcarsions:
Flow MGD
30-day avg 4 0.359/0.129/0.853 none -
daily max 4 0.50/0.129/1.41 none -
TSS, mg/P
30-day avg 1 6.0 35 0
daily max 1 6.0 70 0
Oil & Grease, mg/P 4 NV/NV/NV !0 0
pH, s.u. (min/max) 4 -/7.8/8.8 6.5-9.0 0
SettleableSalids, mP/P 3 <O.S<0.5/<0.5 O.S 0
TDS, mg/P 4 478/310/730 none -