ML20045G669

Forwards Response to 930603 Request for Addl Info Re 921221 Application for Amend to License SNM-1227,consisting of Revised Pages 13-1 Through 13-5 for Both Existing License & 920826 Renewal Application

ML20045G669
Person / Time
Site:	Framatome ANP Richland
Issue date:	07/07/1993
From:	Edgar J SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER
To:	Emeigh C NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
TAC-L30500, NUDOCS 9307150028
Download: ML20045G669 (5)

Text

70-l259 4

5IE M ENS July 7,1993 U. S. Nuclear Regulatory Commission Attn: Mr. Charles W. Emeigh Licensing Branch Division of Fuel Cycle Safety and Safeguards, NMSS Washington, DC 20555 License No. SNM-1227 Docket No. 70-1257

Dear Mr. Emelgh:

Re:

Letter, MT Adams to LJ Maas," Surface and Groundwater Sampling Programs (TAC No. L30500)," dated June 3,1993 in the mfe enced letter you requested additionalinformation regarding Siemens Power Corporation's (SPC's) amendment application of December 21,1992. Enclosed are revised pages 13-1 through 13-5 for both the existing license and the August 26,1992 renewal application containing the information requested.

If you have any questions or require additional information, please call me on 509-375-8663.

Very truly yours, 15.

James B. Edgar Staff Engineer, Ucensing JBE:pm 130047 i

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2101 Horn Rands Road. PO Box 130 Rchiand. WA 99352 0130 Tel (SrJJ) 375 8100 Far (509) 375 8402 9307150029 930707 h

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' SiernenS Power Corporation - Nuclear Division m.2 SPECIAL NUCLEAR MATERIAL LICENSE NO. SNM-1227, NRC DOCKET NO. 70-1257 I

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PART ll - SAFETY DEMONSTRATION ngy.

I l Uranium releases to the sewer have consistently remained below both the CFR quantity

' limit and concentration limit. A review of chemicals discharged shows that waste i discharges have been consistently within the limits of the Waste Dischargo Permit ST3919

with few exer ntions. The exceptions have not been of significant concern to the

! Washington ~.4partment of Ecology.

13.4 Groundwater

13.4.1 Aculfer Description i

The unconfined groundwater aquifer occurs at depths from 10 to 50 feet below the i

I surface and is approximately 20 feet thick. Its direction of flow in the immediate vicinity l of the SPC plant is south-southwest to north-northeast. The impermeable layer which

defines the base of the unconfined aquifer is a silt aquitard whose thickness ranges from four to 33 feet.

13.4.2 Early Samp!!na Proaram l

During the early years of plant operation the single lined (Petromat) lagoons experienced l

localized failures (tears, breaches) which allowed limited amounts of process wastes to l

t j enter the groundwater. The lagoon liner failures were detected in pad by analyses of j

groundwater samples taken from monitoring wells adjacent to the process lagoons.

These early, single lined lagoons were repaired when failure was detected and were l

subsequently upgraded with double liners with leak detection capability between the 4

! liners. Hypalon was chosen as the replacement lining material and was considered much superior to the Petromat. By 1983 all liquid - receiving lagoons had double hypalon liners j

l at a minimum. In recent years certain of the lagoons have been upgraded further by the l

addition of a high density polyethylene (HDPE) liner (s).

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' in 1982 a special groundwater study was conducted to determine the results of past l

lagoon failures.

Certain waste chemicals were detected in concentrations above l

j background in groundwater samples. A report of findings was supplied to the NRC and i

l to the Washington State Department of Ecology. No action was required by either j

agency as a result of the findings and none was taken by SPC.

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' Groundwater samples have continued to be taken and analyzed routinely as part of j

j SPC's ongoing environmental protection / surveillance program. This program serves to t

track the presence / movement of past contamination in addition to serving as a detection system for any new releases.

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13.4.3 Current Samplina Pronram i

j A second special groundwater study was initiated in 1991 utilizing new state-of-the-art l wells and sampling / analytical protocols meeting requirements of appropriate regulatory

agencies. The purpose of the study is to better assess existing groundwater conditions

! and to reassess whether mitigating action is necessary. SPC is performing this study for j submission to the Washington State Department of Ecology as an independent action l under the State of Washington Model Toxics Control Act.

I; 13.4.3.1 Well Description I

. Wells GM 1,5,6,7,8, which are currently being used to monitor groundwater upstream and j

' downstream of the lagoons, are two-inch diameter wells described in Figure ll-13.1. The i bore depths and screened intervals of each well are presented in Table 11-13.1, below:

i TABLE 11 - 13.1 I

l FEET BELOW LAND SURFACE WELL NO.

l BORE DEPTH SCREENED INTERVAL G M-1 35.0 14.8 - 35.8 l

1 GM-5 25.0 4.8 - 24.8 i

GM-6 40.2 20.0 - 40.0 j

GM-7 40.6 20.4 - 40.4 1

GM-8 33.0 12.8 - 32.8 l

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j Each well was installed using the Odex drilling method with stainless steel centralizers to 1

l keep the well screen centered in the borehole. The filter pack and bentonite plug were l

! inserted as the drill was withdrawn to allow these materials to fill the annular space l

, between the well screen or casing and the borehole wall. The filter pack extends i

j approximately three feet above the top of the well screen and the bentonite plug extends approximately two feet above that, The borehole is then sealed with concrete from the

, top of the bentonite plug to ground level. A lockable steel protectiva casing is embedded in the concrete and extends above ground level. The wells were developed by extracting enough well volumes of water to remove the particulates that would sift through the well i

screen and bias sample results.

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Sierilens Power Corporation - Nuclear Division eur.2 SPECIAL NUCLEAR MATERIAL LICENSE NO. SNM-1227, NRC DOCKET NO. 701257 PART 11 - SAFETY DEMONSTRATION

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-r-13.4.3.2 Well Puralna

, The volume of water standing in the wellis calculated. Prior to sampling, a minimum of

' three well volumes are purged from each well using a nondedicated submersible pump.

3 After the well has been purged, the pump is removed from the well and decontaminated.

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! 13.4.3.3 Samplina t

l Samples are collected with a Teflon bailer on clean nylon cord. The bailer is slowly -

' lowered into the well, filled, and raised to the surface. Care is taken to prevent agitation

, of ground-water in the well. The ground-wateris collected in the bailer and discarded two tirnos befora collecting a sample. On the second time, the ground-water is discarded j

through a bottom-emptying spigot.

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Caps on the sample containers are left in place until just before filling. After each sample l

bottle is filled and capped, the sample labelidentifying the sample location, date and time I

of sampling, matrix, type of preservative, and initials of sampling personnelis completed.

Samples are placed in a cooler with double-bagged water ice or frozen reusable ice packs, and repacked with ice as necessary, for storage and transport to the laboratory.

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t Formal chain-of-custody procedures are utilized for the entire sampling / analytical process.

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! 13.4.3.4 Quality Control / Assurance The quality of the sampling program is maintained by assuring traceability of samples, the l

1 collection of quality control samples, and the use of proper data evaluation procedures.

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Data quality objectives requirements as well as laboratory analytical, handling and data evaluation requirements have been established to meet requirements of appropriate regulatory agencies and are implemented via contract with an off site environmental analytical laboratory.

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5 13.5 Field Samplina i

Off-site sampling for fluoride in vegetation and ambient air has shown the concentrations j

to be well within the State limits of 40 ppm and 0.5 ppb, respectively. Off-site sampling l

for uranium in the soil has shown no increasing trend in the concentration during this latest five year license period.

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PART ll - SAFETY DEMONSTRATION

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. PAGE NO.-.

13-5 AVENOMENT APPLCAlON OATE:

July '7.1993 u__

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