ML061780299

E-mail from D. Croulet of Entergy to J. Noggle of USNRC, Regarding Location Plan and Rational Matrix for Proposed Borings

ML061780299
Person / Time
Site:	Indian Point
Issue date:	01/11/2006
From:	Croulet D Entergy Corp
To:	Noggle J NRC/FSME
References
FOIA/PA-2006-0140
Download: ML061780299 (5)

Text

ames.Nogqjle - FW: location plan and rationale matrix for prEoposed borings .page I 1; I

From: "Croulet, Donald" <dcroule@entergy.com>

To: "'James Noggle"' <JDN @nrc.gov>

Date: 1/11/06 3:53PM

Subject:

FW: location plan and rationale matrix for proposed borings From: Hinrichs, Gary Sent: Wednesday, January 11, 2006 1:18 PM To: Croulet, Donald

Subject:

FW: location plan and rationale matrix for proposed borings Don here is the electronic version. There is a later revision, but it is not available to us yet due to IT deleting attachments for viruses From: mbarvenik@gza.com [1]

Sent: Thursday, December 15, 2005 5:38 AM To: Axelson, William L; Quinn, Dennis; Lavera, Ron; Gray, Dara Cc: dwinslow@gza.com; Bob Evers; Hinrichs, Gary

Subject:

location plan and rationale matrix for proposed borings Hi Guys, I think I said "end of business" on Wed. - so, I must still be early given your business is generating power and that doesn't stop at 4:00 PM. This is the "first cut" at putting the rationale down on paper.

There is a lot more rationale underpinning the borings, but this should "get you started".

Have a great night mjb Matthew J. Barvenik, LSP IptommUmlo kthls re~d was d&Wte Senior Principal ha &=&Itonc wbt~ Freedm of,Intonnation GZA GeoEnvironmental, Inc.

One Edgewater Drive Norwood, MA 02062

ames.Noggle - FW: location plan and rationale matrix for proposed borings Page 2 1l

.. .. . .. . W...loc

....... .. n.d.ration..

.. plan.

... ation le...at.rix.

... o...p...po... n.s... .. .ed..... . .. age. 2]

Phone (781) 278-3805 Fax (781) 278-5701 Email mbarvenik@gza.com <mailto:mbarvenik@gza.com>

-Proud participant & supporter of the Pan Mass Challenge-

<http:l/www.gza.comrimages/GZA-Disclaimer.gif>

This electronic message is intended to be viewed only by the individual or entity to which it is addressed and may contain privileged and/or confidential information intended for the exclusive use of the addressee(s). Ifyou are not the intended recipient, please be aware that any disclosure, printing, copying, distribution or use of this information is prohibited. Ifyou have received this message in error, please notify the sender immediately and .

.. ~.

destroy this message and its attachments from your system.

For information about GZA GeoEnvironmental, Inc. and its services, please visit our website at www.gza.com <http://www.gza.com/>.

a-

Monitoring Well Locations and Rationales Monitorin Well Location Approx. Terminal Elevation MW-30 West end of excavation south of IP2-FSP -10 MW-31 West of IP2-FSB and South of IP2-MOB -10 MW-32 Truck Alleyway between IP2-FSB and IP2-PAB -120 MW-33 West of IP2-PAB -15 MW-34 West of IP2-PAB -15 MW-35 West of IP2-PAB -15 In soil backfill just west of east wall of IP2-TB and east of MW-36 Discharge Canal -42 IP2-TB -10 feet west of Discharge Canal (in bedrock outside of MW-37 concrete backfill) -22 MW-38 South of Security Building and east of Discharge Canal -25 MW-39 South of IP1-FSB -120 MW-40 Parking Lot above Sewage Treatment Plant -120

_Priority 2 - Ot MW-41 South of IP3-RWST -15 MW-42 West of IP2-RWST -15 MW-43 South of IP3-Tank Pit and IP3-RWST -15 MW-44 North of IP3-FSB -15 MW-45 -15 MW-46 West of IP3-PAB Sump MW-47 West side of IP1-FSB MW-48 South of MW-38 -25 MW-49 West side of IP1-Discharge Canal -22 MW-50 East side of IP1-Discharge Canal -42 MW-51

_Southern property boundary north of MW-40 -15

Monitoring Well Locations and Rationales Rationale Evaluate Source Area of IP2-FSP leak; Provide future IP2-FSP leak detection monitoring; Assess bedrock hydrogeology- flow direction; Tracer test injection.

Evaluate Source Area of IP2-FSP leak; Provide future IP2-FSP leak detection monitoring; Assess bedrock hydrogeology- flow direction.

Evaluate Source Area of IP2-FSP leak; Provide future IP2-FSP leak detection monitoring; Assess bedrock hydrogeology- flow direction and verify upward gradients in bedrock; Tracer test monitoring.

Assess migration pathways from IP2-FSP; Assess plume width; Investigate IP2-PAB sump; Tracer test monitoring; potential recovery well..

Assess migration pathways from IP2-FSP; Assess plume width; Investigate IP2-PAB sump; Tracer test monitoring; potential recovery well.

Assess migration pathways from IP2-FSP; Assess plume width; Investigate IP2-PAB sump; Tracer test monitoring; potential recovery well.

Assess migration pathways from IP2-FSP; Assess soil backfill as a preferential pathway; Assess hydrogeology of bedrock immediately below the IP-2 Discharge Canal (natural and blasting induced fractures); Assess upward gradients in bedrock; Compare tidal temporal shift to MW-37; assess whether the potential exists for groundwater to migrate into, under, and/or along the IP-2 Discharge Canal (with concrete bottom).

Assess hydrogeology of bedrock Immediately west of the IP2 Discharge Canal; Assess hydraulic communication of bedrock with Discharge Canal (with concrete bottom) and river; Compare tidal temporal shift to MW-36; Assess migration pathways.

Assess potential southerly migration along Discharge Canal Verify hydraulic effectiveness of curtain drains beneath IP1 to capture IP1-SFP release; Verify upward gradients in bedrock Verify upward. gradients in bedrock; verify no southerly migration though bedrock fractures south of IP3 operations (southern property boundary).

her Potential' Sources Further verify hydraulic effectiveness of curtain drains beneath IP1 to capture IP1-SFP release and assess potential release from IP3-RWST.

Assess potential release from IP2-RWST and Tank Pit Assess potential release from 1P3-Tank Pit Assess westerly travel path from potential IP3-RWST release and provide IP3-FSP flow direction and future IP3-FSP leak detection monitoring Assess westerly travel path from potential IP3-Tank Pit release and provide IP3-FSP flow direction and future IP3-FSP leak detection monitoring Assess potential IP3-PAB Sump release and provide IP3-FSP flow direction and future IP3-FSP leak detection monitoring Verify no western migration from IP1-FSB past curtain drains Verify no southerly migration after discharge channel ouffall and south of MW-38 (southern property boundary).

Similar to MW-37 but for IP1 Discharge Canal (with no concrete bottom).

Similar to MW-36 but for IP1 Discharge Canal (with no concrete bottom).

Further verify no southerly migration though bedrock fractures south of IP3 operations (southern property boundary).