1990-02-22_PERMIT FILE - C1981008A

• Permit No: C1981008A
• IBM Index Class Name: PERMIT FILE
• Doc Date: 2/22/1990
• Doc Name: Hydrologic Monitorign Program for Nucla Mine During Temporary Cessation
• Section_Exhibit Name: Tab 15 Attachment 15-4
• Media Type: D
• Archive: Yes

TABLE 2
Proposed Surface Water Monitoring Program for
Nucla During Temporary Cessation
Cessation
Monitoring Frequency
Site Name Location Drainage Flow Quality
SW-N1 Nucla Upper Tuttle Draw Semiannual Semiannual*
SW-N2 Nucla Lower West -- --
Return Ditch
SW-N3 Nucla Lower Tuttle Draw Semiannual Semiannual*
SW-N4 Nucla Lower East -- --
Return Ditch
SW-N5 (NPDES 001 ) Nucla Mid-Lower See Below**
West Return Ditch
SW-N6 Nucla Mid-West -- --
Return Ditch
SW-N7 Nucla Upper West Semiannual Semiannual*
Return Ditch
SW-N8 Nucla Lower Second Park -- --
Irrigation Ditch
SW-N9 Nucla Lower Second Park -- --
NPDES 002 Nucla Tributary to See Below**
Tuttle Draw
NPDES 003 Nucla Tributary to See Below**
Tuttle Draw
NPDES 004 Nucla Tributary to See Below**
Tuttle Draw
NPDES 005 Nucla Tributary to See Below**
Tuttle Draw
NPDES 006 Nucla Mid-West See Below**
Return Ditch
*Field parameters (pH, temp., conductivity, and flow) and full suite water quality will be measured
semiannually in April and September.
**Monitoring is done in compliance and in accordance with Colorado NPDES Permit No. CO-0000213
for Nucla Mine. In addition, full suite water quality will be measured semiannually in April and
September at NPDES 001 (SW-N5).
15-4-5 Revised 02/22/90