2013-12-12_REVISION - M1990057

• Permit No: M1990057
• IBM Index Class Name: REVISION
• Doc Date: 12/12/2013
• Doc Name: Response to amendment review #2
• From: The Union Milling Company
• To: DRMS
• Type & Sequence: AM2
• Email Name: MAC
• Media Type: D
• Archive: No

40
The Leadville Mill Environmental Sampling Procedures
Water Sample Collection
Page 2 -10
2.4.7 NITRATE
APPARATUS & MATERIALS
• Polyethylene or glass bottles.
SAMPLE COLLECTION, PRESERVATION & HANDLING:
• Store samples at approximately 4 °C.
• All samples should be analyzed within 48 hours of collection.
QUALITY CONTROL
• Nitrate determinations should be made promptly after sampling.
2.4.8 SILICA
APPARATUS & MATERIALS
• Polyethylene bottles.
SAMPLE COLLECTION, PRESERVATION & HANDLING:
• Collect samples in bottles of polyethylene plastic only; do not use glassware
for any sample handling.
• Store samples at approximately 4 °C.
• All samples must be analyzed within 28 days of collection.
QUALITY CONTROL
• If samples are stored in glass, silica may leach into the sample and raise
concentrations; therefore, glassware cannot be used.
2.4.9 SOLIDS (TOS, TSS)
APPARATUS & MATERIALS
• Polyethylene or glass bottles.
SAMPLE COLLECTION, PRESERVATION & HANDLING:
• Store samples at approximately 4 °C.
• Samples must be analyzed within seven days following collection,
April 2013