Reports: Technical Coordinators’ Updates, 2007

TECHNICAL COORDINATOR’S
WELL MONITORING UPDATE
BGwT Meeting: May 14, 2007

WELL MONITORING

The BGwT’s latest set of readings are indicated below.

There are currently 702 wells in the West network. Wells were read between April 14 - May 11, 2007. Of the 702 wells read:

• 252 wells @ elevation >7’
• 274 wells @ elevation 5’- 7’
• 131 wells @ elevation 3’-5’
• 32 wells @ elevation <3’
• 13 wells @ no reading

We have read 89 wells in the East network (East Boston Area). Wells were read in East Boston on April 10 & 13, 2007. Of the 89 wells read:

• 48 wells @ elevation >7’
• 14 wells @ elevation 5’- 7’
• 8 wells @ elevation 3’-5’
• 14 wells @ elevation <3’
• 5 wells @ no reading

NOTE: We are continuously reading the well network.

LEVELLOGGERS

• Group 6 dataloggers have been installed. Data is scheduled to be uploaded in June.
• As per agreement with GEI Consultants Inc., loggers (there are a total of 4) installed in and around Cazenove St. continue to be uploaded once a week and sent to GEI Consultants Inc. The purpose is to observe the water levels in the area where the recharge systems have been installed.

ISD RESEARCH

• We continue to look for any underpinned buildings. Data continues to be scarce up to this point.

PURGING

• Approximately 230 wells in our network will be purged over the next 4-5 months to verify their operability
• Wells not meeting a certain criteria will tabbed for replacement or flushing depending on the results
• These wells are the original wells that formed that foundation of our network. All were installed by various developers at different times. Some are also from the WPA study.
• Our last major purging effort was in 1999 and 2000