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Home My WebLink AboutSEP99-0100 Geotechnical Assessment - SEP Determinations - 7/13/1999 • MASON COUNTY PUBLIC WORKS DIRECTOR/COUNTY ROAD ENGINEER Shelton,Washington 98584 INTER-DEPARTMENTAL COMMUNICATIONS TO: Randy Neff, DCD- Planner DATE: July 13, 1999 FROM: Alan A. Tahja, P/W-Co.Hydr. Engr. DCD WO# 9941 SUBJ: Geo-Tech Assessment Review NAME: Larry MacElhaney SEP99-0100 A geotechnical assessment prepared for the proposed thinning/harvest of the MacElhaney property has been received and reviewed by Public Works. The assessment generally conforms to and answers questions required in Gary Yando's policy memo dated October 5, 1998. The assessment appears to dispel the need for additional geotechnical investigation. The SEPA file for this proposal indicates that approximately 55%of the timber will be harvested, and no grading or clearing is declared in any of the submitted material, so none should be done incidentally to the harvest activity. If temporary skidder roads are intended to be made permanent, a grading permit should be required of the applicant. If more than an acre of area will be cleared incidentally to the logging operation, it should proceed under a grading permit with an associated Large Parcel Permanent Stormwater Quality Control Plan developed by an engineer. It appears that the property is accessed from a private road, so no access permit is required. If the property is accessed from a County Road, an access permit should be acquired by the applicant from this department. With the harvest being a thinning operation with no road construction, stormwater runoff should be controlled by the remaining underbrush,which should be disturbed as little as possible. The timber harvest should be allowed to proceed,but no road construction or clearing has been proposed, or should be undertaken without additional consideration of potential instability and stormwater runoff issues. Please feel free to contact me at County extension 461 if you have any questions regarding these comments, or this department's review. Sincerely, Alan A. Tahja File: H:\WP\GEO\REVIEWS\MCLHANEY.IDC JUL. 0 81999 David Hurum �G � Two Z�y � 7� 1648 W. Admiralty Hts. Lane IWASuW Co.pUV**4GDL #.B307 :Bremerton , WA 98312 GP6 July 1 , 1999 �kprfb Mason County Department of Community Development Planning BLDG. 1, 411 N . 5th ST. P . O . Box 578 Shelton, WA 96584 RE; Geological Assessment of Land Per Legal Description Elclosed Herein. A walk-over reconnaissance was performed on June 28 , 1999 by the undersigned Geologist for the above listed 5-acre plot and associated easement . This reconnaissance was done in preparation for a timber harvest . Photographs and measurements were taken for our file and record . The soil is a glacial till . The top 3 inches is a medium to dark brown silt clay loam with gravel inclusions . The next 13-15 inches is a medium to light brown silty sand loam with coarse to very coarse sand and inclusions of pebbles and cobbles . Much of the gravel and cobbles are weathered basalt high in iron content . The next layer at a total depth of 18 inches is a compitent layer of glacial till composed of gravely clay. No slide areas or indications of instability were observed in the area. This area has not been mapped for the Coastal Zone Atlas for Washington Slope Stability Maps . Although the owner indicated the depth to water varies greatly in the area and minimal seepage has been observed in the past no seepage was observed on the date the site was inspected . Natural drainage exists in well established channels . f 12 ttVED David Hurum .� ��-�� JUL 0 81999 1648 W. Admiralty Hts . Lane MASON Co .pUV**NG Depl. #B 3 0 7 .Bremerton , WA 98312 GP6 % July 1 , 1999 Mason County Department of Community Development Planning BLDG . 1, 411 N . 5th ST. P .O . sox 578 Shelton, WA 96584 RE: Geological Assessment of Land Per Legal Description Elclosed Herein. A walk-over reconnaissance was performed on June 28 , 1999 by the undersigned Geologist for the above listed 5-acre plot and associated easement . This reconnaissance was done in preparation for a timber harvest . Photographs and measurements were taken for our file and record . The soil is a glacial till . The top 3 inches is a medium to darts brown silt clay loam with gravel inclusions . The next 13-15 inches is a medium to light brown silty sand loam with coarse to very coarse sand and inclusions of pebbles and cobbles . Much of the gravel and cobbles are weathered basalt high in iron content . The next layer at a total depth of 18 inches is a compitent layer of glacial till composed of gravely clay . No slide areas or indications of instability were observed in the area . This area has not been mapped for the Coastal Zone Atlas for Washington Slope Stability Maps . �Y Although the owner indicated the depth to water varies greatly in the area and minimal seepage has been observed in the past no seepage was observed on the date the site was inspected . Natural drainage exists in well established channels . The slopes on the property are moderate and show good stability . The steepest slope is - on the west boundary of the property . It varies from 18' to 2U° as measured in the tield by a Wedge Smart Level . This is consistant with U . S. G. S . Topographical Map 7 . 5 ' Series . This slope steepens west of the property and leads to a creek. The portion on the subject property is not oversteepened and shows good stability . The vegetation on the parcel is well established . The trees exhibit straight trunks and are 15 to 16 inches in diameter. 'There is a thick understory of brushy plants and fern. In my geological opinion the planned logging should cause no land stability problems. Yours truly, David Hufu�_ Geologist cc : Larry MacElhaney Encls-Legal Description . `+x( r� j,:. .A � �� ' '7� .•mes•faysnrr «a:Ar�7��r^.,�4�• "xturl�lvCse�'.ti;� 3'h L After recording please mail to: •�,C,-,t �'— .r Larry Scott McElhaney }•. NE 733 Bear Creek-Dewatto Road Bremerton, Wa. 98312 5140a�9 QUIT—CLAIM DEED (Statutory Form) THE GRANTOR„ MYRTLE L. MCELHANEY, a married woman as her separate property, for and in consideration of love and affection r.nd other good and valuable consideration, the Grantor conveys and quit-claims to LARRY SCOTT MCELHANEY, a single person as his separate property, all interest in the following described real estate: (see attached legal det•ctiption) �' situated in the County of Mason, State of Washington. yl' Dated this `% day of i %L 1?c0. No.lVII•. " + fYC1;F.TAX ¢ A GRANTOR �YFMr7 AUG 2 2 t �w � . MYRTLE L. MCELHANEY DOP.ENE RAF, Trrr..,titason Country STATE OF WASHING70N COUNTY OF MASON Notary Public � in and for / the Sa a of Washington, do hereby certify that on this PYI day of 1990, personally appeared before me MYR LE L. MCELHANEY, known to be the individual described in and who executed the within instrument and acknowledged that she signed the same as her free and voluntary act and deed for the uses and purposes herein mentioned. GIVEN U ER MY AND AND OFFICIAL SEA this 'mi -mil �1 day of l't" l 990. 6W /I("t NOTARY PUBLIq -in and for the �s� .• State of Wa- ,ingtpn,/ residing at/ J `I •` a My commission expir s e QUIT-CLAIM DEED a ,' ' ��§t�",• "N ;'� fit' � s,�`�� a' `i fE. � $y Y t rt� �. The South half (S1/2) of the West half (W1/2) of the West half (W1/2) of the Southwest quarter (SW1/4) of the Southwest quarter (SW1/4) of Section nine (9) , Towrship twenty-three (23) North, Range one (1) West , W.M. , e.xcept n.g road rights--of-way. Portion of Parcel No. 22309 33 04000. TOGETHER WITH a non-exclusive easement, 30 feet in width, for road and utility purposes, 15 feet on each side of the centerline of the existing access roadway running South from the Bear Creek-Holly Road across the North half (N1/2) of the West half (W1/2) of the Southwest quarter (SW1/4) of the Southwest quarter (SW1/4) of Section nine (9) , Township twenty-three (23) North, Range one (1) West, W.M. , for the benefit of the South half of the East half of the West half of the { Southwest quarter of the Southwest quarter of Section 9, Township 23 North, Range 1 West, W.M. , and the South half (S1/2) of the West half (W1/2) of the West half :> (W1/2) of the Southwest quarter (SW1/4) of the Southwest „ h quarter (SW1/4) of Section (9) , Township twenty-three : (23) North, Range one (1) West, W.M. QUIT-CLAIM DEED