ML11356A546

Riverkeeper (Riv) Pre-Filed Evidentiary Hearing Exhibit RIV000095, Groundwater Investigation '06 Quarter 4 Activities and Results, IPEC00063899

ML11356A546
Person / Time
Site:	Indian Point
Issue date:	12/22/2011
From:	- No Known Affiliation
To:	Atomic Safety and Licensing Board Panel
SECY RAS
References
RAS 21642, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01
Download: ML11356A546 (2)

Text

RIV000095 Submitted: December 22, 2011 Groundwater Investigation

'06 Quarter 4 Activities and Results

• We continued to install new monitoring wells as Phase 2A of the program to test the groundwater under the site including four wells on the waterfront along the Unit 1 and Unit 2 Turbine buildings. We have a total of 3 5 new wells on site. This phase of the project is complete. Well sampling is ongoing.

• Demineralizer Results:

The latest sample results from the down gradient

• The Unit 1 spent fuel pool demineralizer system wells (MW-49 and MW-removed about 98% ofthe Sr-90 activity in the pool. 50) have shown a 5-10 fold reduction in Sr-90 levels.

• Radiological Environmental Monitoring Program fish * '06 Fall Fish Samples samples obtained from the Hudson River came back obtained from the Hudson non-detectable for Sr-90 for the spring of '06. River 20 -25 miles north of Indian Point collected for IPEC are showing low levels of Sr-90. Samples collected by the NRC are showing no levels and DEC results have not been returned We believe our findings are background readings.

• Entergy and the Indian Point Energy Center hosted an open house to present information about the

• A similar event was held ongoing groundwater investigation activities on for the Nuclear Committee of Entergy's Thursday, October 5 between 4 -8 p.m. Experts on Board of Directors on the groundwater investigation, radiation health October 17 effects and high resolution video inspection were available to explain the program and answer questions.

• Remediation Pilot Test: The groundwater investigation team conducted a pump test to determine if a recovery well, could be used to hydraulically prevent the migration of tritiated groundwater around the Unit 2 Fuel Building. The IPEC00063899

test is also designed to test the feasibility of pumping groundwater from the area near IP2. The

• RW-1, located in the Unit 2 Fuel Storage Building test did indicate that water could be drawn from (FSB) around Unit 2 without drawing Sr-90 contaminated water from Unit 1. The RW-1 well pumping did influence water in the Unit 2 Transformer Yard (MW-34) as expected. Sampling from the monitoring wells has resumed.

• The leak collection box installed at the Unit 2 spent fuel pool continues to show essentially no water coming from the crack on the southwest wall. In December 375 ml of water was collected in 4 weeks.

• As part of the investigation of structures and systems on site, the team has examined storm drains.

Inspection and cleaning is complete. Unit 1 drain system has spread contamination to the Unit 3 site.

• The dye tracer tests, which are designed to help characterize flow direction and velocity near the Unit 1 and Unit 2 pools, will begin in early February 07.

• Entergy will begin non-destructive testing in February ofthe IP2 spent fuel pool transfer canal to determine if any areas identified on the video inspection are potential through-wall leaks IPEC00063900