ML19256A792

Forwards 4 Tables & 1 Figure Presenting Data Collected from Puget Hydrological Survey in Skagit Floodplain Near Proposed Ranney Collectors Between Aug & Nov 1978.Covers Etach & Red Cabin Creeks & Skagit River.Oversize Drawing Encl

ML19256A792
Person / Time
Site:	Skagit
Issue date:	01/08/1979
From:	Mecca J PUGET SOUND POWER & LIGHT CO.
To:	Regan W Office of Nuclear Reactor Regulation
References
PLN-207, NUDOCS 7901160160
Download: ML19256A792 (7)

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Puget Sound Power & Light Cornpany Puget Power Budding Bellevue, Washington 98009 (206) 454-6363 January 8, 1979 PLN-207 Director of Nuclear Reactor Regulation Attention: Mr. William H. Regan, Jr., Chief Environmental Projects Branch 2 Division of Site Safety and Environmental Analysis U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Subject:

Puget Sound Power & Light Company Skagit Nuclear Power Project, Units 1 & 2 Docket Numbers 50-522 and 50-523 Red Cabin / Muddy Creek Study

Dear Mr. Regan:

Attached for your information are four tables and one figure that present data collected from a Puget hydrological survey in the Skagit floodplain in the general vicinity of the proposed Ranney Collectors between August and November, 1978. The water table elevations presented in Table 1 were derived from surveying existing domestic wells at the locations shown on Figure 1.

The initial (August-September) readings were obtained prior to detailed surveying of elevations at the wells and creek stations to qualitatively characterize ambient conditions. The accuracy of the subsequent measure-ments is as indicated below:

Ground Water Levels Elevation of reference point 10.020 foot Distance from reference point to water level 10.05 foot Stream Flow !!easurements*

Time for flow meter revolutions +0.2 seconds Width of stream 10.1 foot Depth of stream of each segment 10.05 foot

• Measurements taken with Pygmy Gurley :eter.

A few comments on Figure 1 are appropriate. As shown, there is no surface water connection to the southeast between the eastern headwaters of Etach Mb 790116016o peo 4 s \sj u

Mr. W. Regan PLN-207 Creek and the Skagit River during normal flow conditions. Although Red Cabin Creek has not been observed to be flowing at Station RC-3 during the reported observations, the only outfall point possible to the Skagit is to the wesc through Etach Creek. Natural flow conditions of Red Cabin Creek are from north to south with confluence at Etach Creek. No natural or other obstructions are present to hinder this flow.

Etach Creek (Figure 1), east of its confluence with Red Cabin, has no direct connection with the Skagit River. It is closed off from Red Cabin Creek by a natural buildup of taterial and is murky, making it not conducive to spawning. To the extreme east, the headwaters of Etach Creek fork in the vicinity of Cockreham Road.

The southern fork of this section has a log-jam at its juncture with the northern furk which obstructs flow. The culvert located at Cockreham Road for this section is also blocked by mud and other debris.

During the observation period the existence of the indicated northern fork could not be ascertained. The area where this fork is depicted on Figure 1 did not contain any water nor any indications that water had been there.

Mannser Slough, just north of Etach, has not been in communication with Red Cabin for several years. The western portion of this slough, for several hundred yards, has been filled in by local residents.

If you desire further explanation ot the attached information, please con-tact the undersigned.

Very truly yours,

(.

J E. Mecca, Manager u uclear Licensing & Safety Attach.

cc: Correspondence List ASLB Correspondence List Paul Leech D. L. Schreiber

,* January 4, 1979 CORRESPONDENCE LIST Mr. Richard L. Black CFSP and F0B NRC Legal Staff c/o E. Stachon & L. Marbet U. S. Nuclear Regulatory Commission 19142 South dakers Ferry Road Office of the Executive Legal Director Boring, Oresca 97099 Washington, D. C. 20555 Mr. Roger M. Leed, Esq. Mr. Richard M. Sandvik, Esq.

Suite 610 Assistant Attorney General 1411 Fourth Avenue Building State of Oregon Seattle, Washington 98101 Department of Justice 500 Pacific Building Mr. Nicholas D. Lewis, Chairman 520 S. W. Yamhill Washington State Energy Facility Portland, Oregon 97204 Site Evaluation Council 820 East Fifth Avenue Mr. Richard D. Bach, Esq.

Olympia, Washington 98504 Rives, Bonyhadi & Drummond 1400 Public Service Building Mr. Robert C. Schofield, Director 920 S. W. 6th Avenue Skagit County Planning Department Portland, Oregon 97204 Room 218 County Administration Building Mr. H. H. Phillips, Esq.

Mount Vernon, Washington 98273 Vice President and Corporate Counsel Portland General Electric Company Mr. Robert Lowenstein 121 S. W. Salmon Lowenstein, Newman, Reis & Axelrad Portland, Oregon 97204 1025 Connecticut Avenue N. W.

Suite 1214 Russell W. Busch Washington, D. C. 20036 Attorney for Sauk-Suiattle and Upper Skagit Tribes Mr. F. T. Thomsen 520 Smith Tower Perkins, Cole, Stone, Olsen & Williams Seattle, Washington 98104 1900 Washington Building Seattle, Washington 98101 Donald S. Means Swinomish Tribal Community Box 277 LaConner, Washington 98257

ASLB CORRESPONDENCE LIST Mr. Valentine B. Deale, Esq., Chairman Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington,'D. C. 20555 Dr. Frank F. liooper, Member Atomic Safety and Licensing Board ,

School of Natural Resourcbs University of Michigan Ann Arbor, Michigan 48104 Mr. Gustave A. Linenberger, Member Atomic Safety and Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. Alan S. Rosenthal, Chairman Atomic Safety and Licensing Appeal Panel U. 5. Nuclear Regulatory Commission Washir.gton, D. C. 20555

TABLE 1 SIMfARY OF CROUND WATER LEVEL MEASUREMENTS IN EXISTING WELLS Water

• Level . Water Level Water Level Well Reference Point (Early August, 1978 (October 24, '1978) (a) (November 2,1978)(a)

No. Elevation (feet) (*} Elevation (feet)ga) (Elevation (feet) Elevation (feet) 1 82.97 72.7 73.2 73.2 2 90.62 79.6 - -

3 140.44 91.1 90.9 90.6 4 113.78 91.2 90.2 90.0 5 93.19 79.0 80.1 79.9 6 109.17 88.7 86.8 86.7 7 87.43 77.4 78.3 78.3 8 161.71 93.0 91.1 90.8 9 126.58 - 89.5 90.3

(*) Elevation expressed in feet above Mean Sea Level (MSL)

N .

TELE 2 LOCATIONS OF CROUND WATER LEVEL MEASUREMEhi WELLS Well No. Coordinates 1 N 559587 E 708091 ,

, . 2 N 561691 E 711002 3 N 561608 E 717549 4 N 560474 E 719554 5 N 558735 E 716099 6 N 560663 E 715896 7 N 560884 E 710673 .

8 N 562426 E 718404 9 N 561437 E 719619 e e

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TABLE 3

SUMMARY

OF STRrAM T14M MF.ASUREMElfTS Creet Bed - Flw on Flow on Flow on Flow on Flow on Flow on 1978 October 5, 1978 October 25, 1978 Novem.ber 2 1978 Measurement Elevati g August 8, 1978 August 30. 1978 September 7, (cfs) (efs) (efs)

~

(ers)

Station (Creek) (feet) (cfs) (cfs)

H:-) (Muddy) 137.6 0.21 0.60 7.00 2.90 4.10 2.60 103.3' O.17 -- -- 2.50 3.90 2.00 MC-2 (Muddy) 100.6 -- -- -- 4.40 2.30 MC-2A (Muddy) --

98.1 0.14 0.50 6.40 2.20 -- --

MC-3 (Muddy) 1.30 88.6 -- 4.40 1.50 2.53 NC-4 (Muddyl dry 2.80 230.5 3.10 -- 4.80 3 20 3.00 RC-1 (med Cabia) 0.52 95.3 dry dry 0.70 0 73 0.48 RC-2 (Red Cabin) dry dry dry 80.5 dry dry dry RC-3 (Red Cabin)

(a) Elevations expressed in feet above Mean Sea Level (MSL). -

- TABLE 4 LOCATIONS OF STREAM FLOW MEASUREMENT STATIONS (a)

Station Coordinates MC-1 N 561658 E 717999 MC-2 N 559967 E 717430 MC-2A N 559652 E 717408 MC-3 N 559520 E 717149 MC-4 N'558971 E 716367 RC-1 N 566645 E 715380 RC-2 N 561847 E 711895 RC-3 N 560496 E 711242 1 (a) Coordinates are those of reference points near each measurement station.

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