Dyer Road Well #2 Rehabilitation

Dyer Road Well #2 Rehabilitation

Project Background

well 2Well #2 is the second-oldest well in the Dyer Road Wellfield. The well has not required rehabilitation at any point during its 34-year life. In 2012, staff conducted a video survey of the well, which revealed that the upper and lower sets of perforations were moderately pugged with biological and chemical iron oxide scale. About 36 feet of sediment at the bottom of the well was also observed. Rehabilitation of the well was recommended.







What's Going On Now

Week of March 31, 2014

Final acceptance was approved by the Board March 24 along with the notice of completion/acceptance being filed at the County with release of retention 35-days afterwards.

Week of March 17, 2014

This week the contractor is completing minor repair work to the wellhead insulation, sound panels, and a portion of the exterior building that were damaged during rehabilitation. Richard Slade and Associates is preparing the well rehabilitation operation summary report, which is due next week. Staff will recommend project final acceptance at the March 24 Board.

Week of March 3, 2014

The orifice plate was removed, resized, reinstalled and tested in bypass mode, and the pump operated without fail. The well was placed in service February 27. The contractor is completing minor repair work to the wellhead insulation, sound panels, and a portion of the exterior building that were damaged during rehabilitation. Staff will recommend project final acceptance at the Board on March 24.

Week of February 17, 2014

A modified orifice plate will be installed and tested by February 25 at which time the well will be pumped for one week into the distribution system and vibration testing will be conducted. Staff anticipates all well construction activities will be complete by the second week of March.

Week of February 3, 2014

The step drawdown, constant rate tests, and water quality sampling were completed this week. The test pump was removed, and the permanent well pump was also reinstalled this week. The well is being pumped for one week as a test prior to delivering flow into the distribution system. Staff anticipates all well construction activities will be complete by February 14.

Week of January 20, 2014

The primary well rehabilitation activities have been completed. Staff has directed the contractor to continue pumping the well in an effort to reduce the sand levels. Recent sand levels measured at the design flow rate of 2,000 gpm have dropped to about 5 ppm, which indicates that the additional pumping is helping to stabilize the well.

Week of January 6, 2014

This week, the contractor will begin mechanical redevelopment efforts. Step draw down and constant rate tests will be conducted the second or third week of January followed by reinstallation of the vertical turbine production pump and new pump column.

Week of December 9, 2013

Best Drilling and Pump has completed initial brushing and bailing, well video and CITM survey, and chemical addition for removal of biogrowth and corrosion by-products from the well. This week, the contractor is airlifting acidified well water to settling tanks for neutralization and discharging. The contractor will begin mechanical redevelopment efforts next week.

Week of November 11, 2013

Staff held the pre-construction meeting with Best Pump and Drilling, Inc. November 4 and met with the City of Santa Ana Parks Department staff on November 8 to review the temporary construction fencing and site layout for the rehabilitation at Lillie King Park. The contractor anticipates mobilizing this week.

Week of October 28, 2013

The contract has been executed, and staff issued the NTP last week. The pre-construction meeting is scheduled for November 4.

Week of October 14, 2013

Best Drilling & Pump, Inc. submitted completed contract documents, which were sent to legal counsel for review the week of October 7. Once approved, staff will hold the pre-construction meeting with Best. The project is scheduled for completion in January 2014.

Week of October 2, 2013

The NOA letter and contract documents were sent to Best Drilling & Pump, Inc. for processing on September 25. Once completed, a preconstruction meeting will be held. Project is scheduled for completion in January 2014.

Week of September 16, 2013

Best Drilling & Pump, Inc. is the apparent low bidder. Staff will recommend construction award to Best at the September 23 Board meeting.

Week of September 2, 2013

Bids are due this week, and staff will make a recommendation for construction award to the Board in September with an anticipated project completion in January 2014.

Week of August 19, 2013

Invitations to bid were transmitted to five well rehabilitation contractors August 8, and a pre-bid meeting held August 15, with two contractors in attendance. Bids are due September 5.

Rehabilitation is anticipated to include rigorous mechanical and chemical cleaning. Construction will begin September 2013 and conclude January 2014.

Community Impacts

Well 2 Rehabilitation Project

Dyer Road Well 2 map

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