Test Pile Program Update: September 9, 2016

When the Port of Anchorage (POA) initiated its Test Pile Program earlier this year, careful attention was paid to potential noise impacts. Long- and short-term noise monitors collected data at locations in Government Hill and Joint Base Elmendorf-Richardson’s Cherry Hill residential area. The monitoring equipment captured baseline noise levels, and compared this to noise generated by the vibratory, diesel, and impact hammers used to drive the 10 48-inch steel pipe indicator piles. Weather data, a potential influence on data Continue reading

Anchorage Port Modernization Program In‐air Noise and Ground‐borne Vibration Analysis Monitoring Report, August 26, 2016

Anchorage Port Modernization Program In‐air Noise and Ground‐borne Vibration Analysis Monitoring Report, August 26, 2016

Executive Summary

Aging infrastructure at the Port of Anchorage (POA) has far exceeded its economic and design life. Some of the oldest parts of the current infrastructure date back to the early 1960s. The POA is planning to undertake a reconstruction project—the Anchorage Port Modernization Program (APMP)—to improve and update these facilities. The APMP is planned for construction between 2017 and 2022 or later, dependent on available funding.

In advance of the APMP, the POA conducted a smaller‐scale effort during Continue reading

Test Pile Program Update: June 27, 2016

Test Pile Program Update: June 27, 2016

Construction activities on the Port of Anchorage’s (POA) Test Pile Program are now complete. The last pile was driven to 150 feet below mudline on June, 7, 2016, and restrikes on the 10 test piles began the next day. The piles, which were driven up to 185 feet below the mudline, experienced no more than 10 inches of additional movement as a result of the restrikes. Seven of the 10 piles have been cut off within 2 feet of mudline Continue reading

Test Pile Program Construction Update: May 31, 2016

Test Pile Program Construction Update: May 31, 2016

Work is nearly complete on the Port of Anchorage’s (POA) test pile program. The remaining three piles will be driven this week (Wednesday, Friday, and Saturday) near Terminal 1 and at the north end of the Port, pending tidal or other construction constraints.

Restrikes on each of the ten test piles will start the first week in June and be complete by June 18, 2016. Each pile will be struck up to ten times to confirm structural capacity. Following the Continue reading

Test Pile Program Construction Update: May 23, 2016

Test Pile Program Construction Update: May 23, 2016

Test Pile Program successes continue and we are now at the half-way point! Last week, the Port of Anchorage (POA) drove two more test piles to the target depth of 174 feet below mean low water (MLW) line. Previous piles had been driven to depths ranging from 133 feet to 175 feet below the MLW line. This data will be used to refine further design and construction requirements for Phase 1 in-water construction, scheduled to Continue reading

Test Pile Program Update: May 18, 2016

Pile driving on the fourth of ten test piles began early this morning near Terminal 1 (Indicator Pile #5). Following initial placement using the vibratory hammer, diesel hammer impact driving will begin around mid-day, pending marine mammal or technical issues. Work should be complete by late afternoon. Construction on the fifth pile (Indicator Pile #2) will begin early Thursday or Friday morning, pending results from today’s efforts. Noise monitors will be in place in Cherry Hill Continue reading

Test Pile Program Construction Update: May 16, 2016

Test Pile Program Construction Update: May 16, 2016

On May 14, 2016, the Derrick Barge (DB) General changed position to the next test pile location near Petroleum, Oil, and Lubricant (POL) 1. The next planned pile driving is set for Wednesday, May 18, 2016.

Similar to previous pile installation, work will begin with the vibratory hammer, followed by the hydraulic impact hammer. Work will last approximately 4 to 5 hours, pending marine mammal, tidal, technical, or safety issues.

Test Pile Program Construction Update: May 9, 2016

Test Pile Program Construction Update: May 9, 2016

Starting early this week, the Derrick Barge (DB) General will move north and stage in a new location near the Port of Anchorage’s (POA) Terminal 3. The POA plans on installing the Test Pile Program’s third pile starting Thursday morning, May 12, 2016.

Installation will begin with the vibratory hammer, followed by the hydraulic impact hammer. The vibratory phase is expected to take approximately 30 minutes. After an equipment change, the Continue reading

Test Pile Program Construction Update: May 2, 2016

The Port of Anchorage’s (POA) Test Pile Program gets underway this week with the installation of the first test pile today, May 2, 2016. The second pile is scheduled for installation on May 5, 2016. Both pile locations are near the existing Petroleum, Oil and Lubricants (POL) 1 terminal at the south end of the Port.

Long-term noise monitoring stations near Government Hill and Cherry Hill were set up the week of April 25, 2016 to collect ambient Continue reading

Test Pile Program Construction Update: April 25, 2016

Test Pile Program Construction Update: April 25, 2016

The Derrick Barge (DB) General arrived in Anchorage from the Port of Seattle on April 20, 2016. The barge’s arrival at the Cook Inlet Tug and Barge dock marks the start of the Port of Anchorage’s (POA) month-long test pile program, which will install 10 indicator piles at key in-water locations. This critical test program will collect design information, investigate construction methods, and identify potential impacts that may occur when in-water construction begins in 1028 on the Anchorage Port Modernization Continue reading