Page 11 - Beaumont Basin Watermaster

Beaumont Basin Watermaster Memorandum No. 18-23 Page 2 of 9

✓ Figure No. 5 illustrates levels at three wells owned by the City of Banning in the
Southeast portion of the basin. While water level at the Old Well No. 15 (Chevron
Well) has been fairly flat over the last two years, a somewhat significant and steady
decline, close to 23 feet, was recorded at Banning M-8 between the summer of
2015 and the winter of 2017. The probe at Banning M-8 was removed in late
January 2018 as there seems to be an obstruction in the well at a depth of
approximately 350 ft below ground. City staff has indicated that the pump at this
well was going to be pulled during the summer of 2018, but that has not happened
yet. Water level at Banning M-9, recorded at an elevation of 2,130 ft, is close to
the lowest elevation since the monitoring program began in 2015. The water level
at this location has declined by 14 ft since the beginning of the year.

✓ Figure No. 6 illustrate recorded water level at BCVWD No. 2 and the new
monitoring well BCVWD No. 25. Over the last two years, the level at BCVWD No.
2 has increased by over 20 feet topping in May 2017 at an elevation of 2,220 ft.;
current water level is slightly lower at 2,214 ft. Water level at BCVWD No. 25 were
in sync with BCVWD No. 2 until production at this well (25) started in April 2018
when the well pumped up to 18 hours per day during non-TOU hours. Daily values
shown in this graph are based on the highest daily level to minimize the impact of
pumping conditions. The water level at this well has declined by seven feet since
April 2018.

New Equipment Installation

✓ None.

Troubleshooting Issues

The following malfunctioning issues were encountered during our November 15, 2018
field visit:

✓ BCVWD No. 2 – Communications cable did not work during the September and
November visits. Probe was removed from the well to download data and lowered
again. The communications cable (550 ft) at this well needs to be replaced.

✓ Oak Valley No. 5 – Communications cable is not working; however, probe
continues to record hourly water levels. Probe was pulled from the well to
download data and lowered again. A new communication cable needs to be
installed at this location,

✓ The new water level meter continues to provide inconsistent water level
information despite of temporary repairs conducted by engineering staff. This
device will be sent to Solinst for repairs.