Loading...
HomeMy WebLinkAboutGEO2024-00114 Analyses, Addendum, Hold Harmless Agreement - PLN General - 3/18/2025 f 2222876 MASON CO WA 03/18/2025 11:00 AM AGREE KATHERINE MCBRIDE #207524 Rec Fee $305 50 Pages 3 I�Nhl IIl11I 11 II1111 ill 111111 IIII$1 loll 1l111111111111111111 F IIII NAME AND RETURN ADDRESS Katherine McBride 1827 Lakehurst Dr SE Olympia, WA 98501 DOCUMENT TITLE: Hold Harmless_Agreement_-_ENF2024-00045.and GE02024-001 l4__________________ REFERENCE NUMBER(S)of related documents and/or permits: ENF2024-00045 and GE02024-00114 GRANTOR (S) Last, First and Middle Initial: Katherine McBride o.b.o. Dogwood Pines LLC Additional Grantors- N/A GRANTEE:Mason County LEGAL DESCRIPTION (Quarter/quarter, section, township&range, plat, lot, & block) TR A of Survey 1/59 S 40/163 S 52/239 PARCEL NUMBER(S): 22029-75-00010 Page I of 3 DEC LARATION OF GEOLOGICALLY HAZARDOUS AREA COVENANT In consideration of the approval of the development referred to as(project name and permits#'s) Dogwood Pines, Katherine McBride Project on parcel number 22029-75-00010 relating to real property legally described above. The undersigned, as owner(s), covenant and agree that: WHEREAS, the undersigned are the owners of or have a substantial beneficial interest in the real property addressed in the above legal description, and WHEREAS, owners have or are in the process of obtaining approval of the following county land use and building permits for the property: 201 SE Lazy Dog Ln, Shelton WA 98584 and WHEREAS, the property is located within a 'geologically hazardous area' as defined in Section 8.52.140 of the Mason County Resource Ordinance#51-17, and a Geotechnical Report or Geological Assessment prepared by Martig Engineering dated October 31,2024,with addendum_ dated February 6, 2025 has been submitted to the County. WHEREAS, section 8.52.140 (F) of Mason County Resource Ordinance #51-17 requires as a condition of the issuance of land use and building permits that this covenant be signed,acknowledged, and recorded in the records of Mason County; The Owners agree as follows: 1. The owners will inform their successors and assignees of the property described above that the prope 1 ty is in a'geologically hazardous area,'that there may be risks associated with development thereon,that there may be conditions or prohibitions on development imposed by the County,and that there are features on this propeIty which may require maintenance or modification. 2. The owners,on their own behalf and on the behalf of their heirs,successors or assignees;hereby waive any right to assert any claim against the County, its officers,and employees for Page 2 of 3 / any loss or damage to people or property either on or off the site, resulting from land movement by reason of,or arising out of,issuance of permit(s)by the County ;development on the property,except only for such losses that may directly result from the sole negligence of the County. This covenant is intended to protect the value and desirability of the real property described above and to benefit all the citizens of Mason County. They shall run with the land and be binding on al I parties having or acquiring from the current owners ortheir successors,any right,title or interest therein,and to the benefit of all the citizens of Mason County. Al Owner Signature and Date -Yd Owner Signature and Date k La 1 lam?7 N'F_ NIt`�-a Of Print Owner Name Print 2 d Owner Name STATE OF WASHINGTON, SS: County of_Ilwgpo On this day, personally appeared before me, _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _, to me known to be the person(s)described herein and who executed the within and foregoing instrument and acknowledged the he / she /they signed the same as his/her/their voluntary act and deed for the uses and purposes therein mentioned. Witness my hand and official seal hereto affixed;this -I!day of_ M DLkJA V S LESTER hyttm Notary Public (Signature) State of Washington License Number 171710 Notary Public in and for the State of Washington, My Commission Expires May 10, 2026 residing in said County. My commission expires Q Z Page 3 of 3 r Mason County Department of Community Development Submittal Checklist For a Geotechnical Report Instructions: This checklist must be submitted with a Geotechnical Report and completed, signed, and stamped by the licensed professional(s)who prepared the Geotechnical Report for review by Mason County pursuant to the Mason County Resource Ordinance. If an item found to be not applicable,the report should explain the basis for the conclusion. pelican Owner S D CS Parcel# 2 Z O Z - 7 5- 0 C20 10 Site Address Z01 S 5 D,, o q L"h $ �N CA -�V VN USA (1) (a)A discussion of general geologic conditions in the vicinity of the proposed development, Located on page(s) L (o ,Q l.A2., 14 ,31 N (b) A discussion of specific soil types Located on page(s) o! ,Q 7 (c) A discussion of ground water conditions Located on page(s) 7 (d) A discussion of the upslope geomorphology Located on page(s) (e) A discussion of the location of upland waterbodies and wetlands Located on page(s) ., 1. (f) A discussion of history of landslide activity in the activity in the vicinity, as available in the referenced maps and records Located on page(s) (2) A site plan which identifies the important development and geologic features. Located on Map(s) (3) Locations and logs of exploratory holes or probes. Located on Map(s) ct- N a-L_ ,55a1V 11 (4) The area of the proposed development,the boundaries of the hazard, and associated buffers and setbacks shall be delineated(top, both sides, and toe)on a geologic map of the site. Located on Map(s) (5) A minimum of one cross section at a scale which adequately depicts the subsurface profile, and which incorporates the details of proposed grade changes. Located on Map(s) (6) A description and results of slope stability analyses performed for both static and seismic loading conditions.Analysis should examine worst case failures. The analysis should include the Simplified Bishop's Method of Circles.The minimum static safety factor is 1.5,the minimum seismic safety factor is 1.1.and the quasi-static analysis coeffients should be a value of 0.15. Located on page(s) ' Addcv►a%.► YK (7) (a)Appropriate restrictions onlacement of drainage features Located on page(s) (b) Appropriate restrictions on placement of septic drain fields Located on page(s) ; (c) Appropriate restrictions on lacement of compacted fills and footings Located on page(s) Page 1 of 2 Form Effective June 2008 Disclaimer: Mason County does not certify the quality of the work done in this Geotechnical Report. (d) Recommended buffers from the landslide hazard areas shoreline bluffs and the tops of other slopes on the property. Located on page(s) GY%P_ V e N k Ira (e) Recommended setbacks from the land ide hazard areas shoreline bluffs and the tops of other slopes on the property. Located on page(s) - (8) Recommendations for the preparation of a detailed clearing and grading plan which specifically identifies vegetation to be removed, a schedule for vegetation removal and replanting, and the method of vegetation removal. Located on page(s) /yo ht e P"e (9) Recommendations for the preparation of a detailed temporary erosion control plan which identifies the specific mitigating measures to be implemented during construction to protect the slope from erosion, landslides and Parmful construction methods. Located on page(s) NO V,.f— Kgc_u,Iv-V am- kip Lot c-e$ (10) An analysis of both on-site and off-site impacts of the proposed development. Located on page(s) No i,.� ZeQ�. th iy W o✓� lS �,, t} t �ev n.� pau e.(o�h Adc1ev% cWw% s f F► (11) Specifications of final development conditions such as, vegetative management, drainage, erosion control, and buffer widths. Located on page(s) (12) Recommendations for the preparation of structural mitigation or details of other proposed mitigation. Located on page(s) (13) A site map drawn to scale showing the property boundaries, scale, north arrow, and the location and nature of existing and propposed development on the site. Located on Map(s) S 1, I<2v1 0�`r"�( q TY N5�'� r hereby certify under penalty of perjury that I am a civil engineer R&nsed in the State of Washington with specialized knowledge of geotechnical/geological engineering or a geologist or engineering geologist licensed in the State of Washington with special knowledge of the local conditions. I also certify that the Geotechnical Report, dated , and entitled G-to. sego e� S .ZN- Zo k S meets all the requirements of the Mason County Resource Ordinance, Landslide Hazard Section, is complete and true,that the assessment demonstrates conclusively that the risks posed by the landslide hazard can be mitigated through the included geotechnical design recommendations, and that all hazards are mitigated in such a manner as to prevent harm to property and public health and safety. (Signature an mp) AJ IV N 2 ISTNAL �A 1° N d ZC�o Page 2 of 2 Form Effective June 2008 Disclaimer: Mason County does not certify the quality of the work done in this Geotechnical Report. 4 7 MARTIG ENGINEERING P.O. Box 1693 Allyn, WA 98524 Cell (360) 507-0489 Email: MartigEngr(aatt.net ADDENDUM #1 DATED 2-6-2025 TO THE FOLLOWING REPORT: GEOTECHNICAL INVESTIGATION/ANALYSES REPORT FOR PROPERTY LOCATED AT 201 SE LAZY DOG LN SHELTON,WA 98584 October 31,2024 (11-Pages of Text)& (12-Pages of Attachments) Tricia Woolett Building Inspector-Plan Review TW_@_Ma_sonCountvWA.gov • Investigation Site Address: 201 SE Lazy Dog Ln Shelton, WA 98584 [Left{north}Off of Arcadia Road] • Mason County TPN: 22029-75-00010 • Sections 20 & 29, T20N, R2W, W.M. • Licensed Professional Civil Hydrology Engineer Ken Martig, Jr MSCE PE Martig Engineering I ADDENDUM #1 INTRODUCTION On January 8, 2025, a meeting with Mason County Staff discussed the referenced original Martig Engineering Geo-Report dated October 31, 2024. During this meeting, Martig Engineering was asked to prepare this Addendum #1 to clarify the following: a. Provide the Volume of"Excavated Soil" (Original Report referred to "Excavated Gouge"), b. Explain why the Simplified Bishops Method of Circles was not used to analyze the placement of"Fill Soil" upon the existing stable steep slope located immediately north of the originally existing Septic System for the primary SFR upon this Property; c. Provide an analysis of both on-site & off-site impacts of the proposed development, d. Present a summary of Additional Work that will be competed once the "Stop Work Order' is removed; e. Include a revised "Submittal Checklist' within the requested Addendum #1. 1 r In the context of this Addendum #1, "Development" refers to the Volume of Gouge Excavated Soil, which became the amount of the Fill Soil placed upon the existing northerly Steep Slope. At issue is whether a "Land Modification Permit' will required. II. CHRONOLGY OF IMPROVEMENTS BEING MADE UPON THIS LAZY DOG PROPERTY a. The Original 2-BR SFR was constructed in 1981, with several additional outbuildings added over time. The 10-31-24 Martig Engineering Report documented that the subject property has remained geologically stable since the construction, continued use, and maintenance of these improvements b. Recently, construction of the 1-16-24 County Approved Septic System Improvements was completed. It was during this construction period that the subject Excavation of soil occurred and that the Excavated Soil was placed upon the subject northerly steep slope: c. Contractor SDCI was then engaged with the purpose of providing permanent Erosion Control upon the bare soil areas created by the previous Contractor's work while installing the approved Septic System Improvements. SDCI began their Erosion Control work by securing the gentle sloping Meadow Areas and placing Temporary Erosion Control Plastic Sheets upon all other exposed bare soil areas. The following Photos show the Chronology of the SDCI Contractor's work: 1 SDCI Secured Meadow&Plastic placed 2: Plastic placed from Gouge bottom to the base of Northerly covering the Gouge Excavation Area. Steep Slope which has a thin soil fill placed upon it. 3.Plastic covers access around N-End of SFR. 4= Plastic covers thin Soil Fill placed upon adjacent Northerly Steep Slope. 2 I w' Ip h; Y K 1i t 5:Canopy&Understory Debris Piles 6:Canopy&Understory Debris Piles. 's: 1 . K� 7:Upper end of Path down base of Stable 8:Rocked Path subgrade along Base of Stable Steep Northerly Slope for removing Debris Steep Northerly Slope for removing Debris. and placing the erosion Control Mat. A 9: Removing Debris. 10:Erosion Control Mat, Rock Stockpiles. 3 •r , 1 11: Placing Erosion Control Rock Mat 12: Placing Erosion Control Rock Mat upon Bare Soil Steep Slopes. upon Bare Soil Steep Slopes. t� 1 : N v 1 4Weathered iti 3 0 9,202 Condition o of previously placed Rock Mat. III. CALCULATED VOLUME OF EXCAVATION (Gouge Zone) Field Measurements were made of the Gouge Area Excavation. Measurements were made while the temporary Plastic Cover was in place, protecting the excavation's bare soil from Rainy Season Erosion. These Calculations represent the absolute minimum volume of the Soil Excavated from this Gouge Area. Attachment 1 to this Addendum #1 shows the Calculations. The derived Total Excavation Volume is 72 Cubic Yards. Even if doubled, this volume is well below a target value of 200 Cubic Yards. 4 r This excavated soil was used as a thin cover of Soil Fill, placed upon the adjacent Stable Steep Slope located immediately North of the Septic System's Flat Plateau Area that served the original 1981 constructed SFR. IV. SIMPLIFIED BISHOP'S METHOD OF CIRCLES This method of evaluating Slope Stability assumes that the slope failure slumps in a circular motion, forming a "concave" shaped slope face. However, the long-standing stable steep slopes, upon the subject and nearby properties, do not have concave slope faces. These slopes were formed by other shaping forces. Further, this method assumes that vertical slices can be examined, independent from lateral forces. As the examined slope becomes steeper, the lateral force influence becomes greater and can no longer be ignored. Since the above listed man-induced improvements did not create any "New Steep Slopes' upon this property and since the existing stable steep slopes are not concave shaped, the Bishop's Method of evaluation could not provide meaningful results consistent with the currently stable steep slopes examined within the Martig Engineering Study area. V. ANALYSES OF BOTH ON-SITE & OFF-SITE IMPACTS OF THE PROPOSED DEVELOPMENT The "Proposed Development" in this Mason County requested Addendum#1 is to primarily address the impact of the Excavation of Soil from the Gouge Area and the placement of this Excavated Soil as a thin Soil Fill upon the existing stable steep slope adjacent to the north {as shown by the Photographs within this Addendum #1}. Additionally, SDCI is engaged by the Owner to place permanent Fractured Rock Erosion Control Mats upon all of the Steep Slope Bare Soil areas resulting from the implementation of the Septic System Improvements..... including Landscaping measures that add Native Vegetation and sections of Dry Creek-Bed within the area's Runoff Ravine. a. On-Site Impacts: (i) The prior excavation of the Gouge, to place Septic System Transport Piping, created a Bare Soil Slope that requires the installation of Permanent Erosion Control measures by SDCI; (ii) The prior placement of the thin Soil Fill upon the adjacent existing stable steep slope requires that SDCI install Permanent Erosion control measures where the fill was placed; (iii) The prior waste piling of removed Native-Canopy, Orchard-Trees, and Native Understory requires: an Access Path for reaching the disturbed ground areas; the removal and disposal of the debris piles; the placement of the permanent erosion control measures; and Owner requested associated Landscaping; (iv) No new impervious surfaces were added and the prior existing runoff from existing impervious surfaces managed to disperse, within the improved areas, with no need for a formal impervious surface drainage System. 5 i b. Off-Site Impacts: (i) All of the previous and ongoing man induced activity is located well within the interior of the subject Lazy Dog property, almost exclusively out of view from surrounding properties, County Roads, and Hammersley Inlet water traffic; (ii) Occupancy activity occurs southerly of the existing steeply sloping areas upon the property and basically at the Dead-End of Lazy Dog Lane; (iii) The Ravine, within which any runoff from the Developed areas would flow, does not convey visible signs of overland flow within it and its discharge location onto and down the Hammersley Inlet Marine Bluff Bank shows no visible signs of active erosion; VI. ADDITIONAL WORK TO BE COMPLETED BY SDCI Up to the Stop Work Order, only 90-95% of the prior exposed Bare Soil areas have had permanent Erosion Control Measures implemented upon them {as reported by Jason of Artisans on 1-8-25}. All of the areas currently covered with temporary Black Plastic Sheeting still require the placement of permanent Erosion Control Measures by SDCI. The Plastic Covered existing stable steep sloping bare soil areas will be armored by finishing the placement of the Fractured Rock Erosion Control Mats, similar to the completed applications shown within the Photographs in this Addendum #1. The Gentle Sloping areas around the existing 2-BR SFR will have new Lawn Grass planted, as existed prior to these areas becoming disturbed. Accompanying Landscaping, using Native Fern, Moss, and Oregon-Grape will be use to augment the permanent erosion control measures and the undisturbed areas of native vegetation will be preserved. This Addendum #1 Report is prepared by Ken Martig, Jr. MSCE PE of Martig Engineering: Ce fied Ken Martig. Jr. M C PE WAS Martig Engineerin �`�' �, N c Attachments: Al thru A2: N 2 1. Gouge Soil Excavation Volume Calculations; 90 E 20 do +vr"Q r V 2. Mason Co. Geotech Report Checklist. Fss T o/N tr 6 �.�C0.�a�oh P•� 2 ( o-�2 GroSS S2a-�tnh A-reu D.�' �.�F.c, = 13,,Z�z �• c a I ZS" b Irmo" x 3 4" 7- ��� SK��- area• bad = o.,g� 8�" x 30" - - �iS i '' 19o � fh�- q r► vp� o � u��tl/ l�►' �1 oV� t 3Z•7 -FJ, 13.Z i Vol w t ro GK��s rpr* 1 f-•l Altu� w�dEL, rzt"+- z40" 2 u ,f 183u.� z7 rlYa. 3� rloYkL�, Fr.� o� �N �e 2 � T-►.�.�w�l� ,S'Iti-P�� v•( L-A w X 0) 'lz ?2OAf.s g vd1 0 r,t 1, t9 4, 27 = G2 y-1 l�a�t✓ 2-o Jc'z d E ✓«. ZO tr.K\in a,jt�0 C. c T—pvL prreo� , 49" TT Ad�" y too~ W A c,•.k O Ae-q ., 3 A.* = 3 S, - rr cz� _ ^e7Y b \ 4-L 0%A r-A v E yt G°t V R �l u1r� C cl +L.� ?sC.tvJ set t t t;. '1'o.�k r p I tzc 5 i4kal.c e kA P 4--to f k--Q_ ]-k e /��La►��-t �j �n gi rl �,.-�v. o f 3 e/i1 +_ G°p A-5 l $ -.4C-O u dk �-1 a� LA p��ems- rc o�•�1.. mod- 2 7 4U, NO.. 4-"Wt � O-P fV-tNV\arn 2 9\ck w'^c-e.- Cs o --72 `ek,S 0.1� Cro,t a e-itC Svc 1 N Z fu 9O GIST / TONAL IZv° Z Mason County Department of Community Development Submittal Checklist For a Geotechnical Report Instructions: This checklist must be submitted with a Geotechnical Report and completed, signed, and stamped by the licensed professional(s)who prepared the Geotechnical Report for review by Mason County pursuant to the Mason County Resource Ordinance. If an item found to be not applicable,the report should explain the basis for the conclusion. z2o29 pelican Owner D CS Parcel#_ 2 10 7 S- d 00 10 Site Address L t ` i L �. � (1) (a)A discussion of general geologic conditions in the vicinity of the proposed development, Located on page(s) L -k,," (o 41 p2� �,�� t&T5°'� (b) A discussion of specific soil types 7` ' Located on page(s) 64 6 -1 (c) A discussion of ground water conditions Located on page(s) 7 (d) A discussion of the upslope geomorphology Located on page(s) (e) A discussion of the location of upland waterbodies and wetlands Located on page(s) (f) A discussion of history of landslide activity in the activity in the vicinity, as available in the referenced maps and records Located on page(s) (2) A site plan which identifies the important development and geologic features. Located on Map(s) -3 (3) Locations and logs of exploratory holes or probes. Located on Map(s) ! (4) The area of the proposed development, the boundaries of the hazard, and associated buffers and setbacks shall be delineated (top, both sides, and toe)on a geologic map of the site. Located on Map(s) -� ; , ; , f A-"'7 (5) A minimum of one cross section at a scale which adequately depicts the subsurface profile, and which incorporates the details of proposed grade changes. Located on Map(s) A-_, (6) A description and results of slope stability analyses performed for both static and seismic loading conditions. Analysis should examine worst case failures. The analysis should include the Simplified Bishop's Method of Circles. The minimum static safety factor is 1.5,the minimum seismic safety factor is 1.1. and the quasi-static analysis coeffients should be a value of 0.15. Located on page(s) Y (7) (a)Appropriate restrictions on placement of drainage features Located on page(s) (b) Appropriate restrictions on placement of septic drain fields Located on page(s) (c) Appropriate restrictions on placement of compacted fills and footings Located on page(s) Page 1 of 2 Form Effective June 2008 Disclaimer: Mason County does not certify the quality of the work done in this Geotechnical Report. (d) Recommended buffers from the landslide hazard areas shoreline bluffs and the tops of other slopes on the property. Located on page(s) rq"e. �� K QV (e) Recommended setbacks from the land ide hazard areas shoreline bluffs and the tops of other slopes on the property. Located on page(s) A 6 (8) Recommendations for the preparation of a detailed clearing and grading plan which specifically identifies vegetation to be removed, a schedule for vegetation removal and replanting, and the method of vegetation removal. Located on page(s) No ►ti'e (9) Recommendations for the preparation of a detailed temporary erosion control plan which identifies the specific mitigating measures to be implemented during construction to protect the slope from erosion, landslides and harmful cpnstruction methods. Located on page(s) t:' 1�.� `u 8 uo0 ��1 a- C t'v'5 I T? �� k ,r ea to Ck tst t (10) An analysis of both on-site and off-site impacts of the proposed development. Located on page(s) (11) Specifications of final development conditions such as, vegetative management, drainage, erosion control, and buffer widths. Located on page(s) �Z' (12) Recommendations for the preparation of structural mitigation or details of other proposed mitigation. S �1 Located on page(s) (13) A site map drawn to scale showing the property boundaries, scale, north arrow, and the location and nature of existing and proposed development on the site. Located on Maps) -_"�j I' '`0-' rV\ 0"e-�i q 7-Y S S hereby certify under penalty of perjury that I am a civil engineer li ensed in the State of Washington with specialized knowledge of geotechnical/geological engineering or a geologist or engineering geologist licensed in the State of Washington with special knowledge of the local conditions. I also certify that the Geotechnical Report, dated 1 Z and entitledo, e 0o �4 -0Y-rquirements of the Zb % !--lt �•E �:� I-d'1 he County Resource Ordinance, Landslide Hazard Section, is competes nldttruee that the assessmentMason demonstrates conclusively that the risks posed by the landslide hazard can be mitigated through the included geotechnical design recommendations, and that all hazards are mitigated in such a manner as to prevent harm to property and public health and safety. (Signature and Stamp) WA O 1STER TONAL Page 2 of 2 Form Effective June 2008 Disclaimer: Mason County does not certify the quality of the work done in this Geotechnical Report. MARTIG ENGINEERING P.O. Box 1693 Allyn, WA 98524 (360) 275-4638 Cell (360) 507-0489 Email: MartigEngrtc;att.net GEOTECHNICAL INVESTIGATION/ANALYSES REPORT FOR PROPERTY LOCATED AT 201 SE LAZY DOG LN SHELTON, WA 98584 October 31, 2024 (11-Pages of Text) & (12-Pages of Attachments) Tricia Woolett Building Inspector-Plan Review TW(c)MasonCountyWA.gov • Investigation Site Address: 201 SE Lazy Dog Ln Shelton. WA 98584 Left {north} Off of Arcadia Road • Mason County TPN: 22029-75-00010 • Sections 20 & 29, T20N, R2W, W.M. • Licensed Professional Civil Hydrology Engineer Ken Martig, Jr. MSCE PE Martig Engineering A. INTRODUCTION In Mid-April 2024, Martig Engineering was contacted by Dan of SDCI to review the mitigation work that SDCI was starting, with the purpose of providing permanent Erosion Control of disturbances to the Site made by a previous Contractor. SDCI had previously provided temporary erosion control: 1. Straw in the disturbed Meadow Areas; 2. Plastic sheeting covering the Steeper Sloping Areas of Bare Soil. We discussed the use of an erosion control method that SDCI has used on previous Federal Government Projects involving the erosion control of Flood Dikes and Levees. 1 I offered that I could monitor his work and provide documentation as required by Mason County. Unfortunately, I was diagnosed with Heart-Issues that led to Major Surgery which kept me from performing any Martig Engineering activity for months. During my absence, SDCI was placed upon a Stop Work Order until a Geotechnical Analysis and Report could be completed and submitted to Mason County for Review and Approval. The following discussion presents the requested Analyses and Geotechnical Report. B. PRE-DISTURBANCE GEOTECH STABILITY OF THE SITE 1. Pre-disturbance means before the previous Contractor installed a new Onsite Septic System. It was this work that caused significant modifications of the Site's Grounds [ steep cuts with the excavated soils being pushed onto and down prior existing stable steep slopes ]. 2. Prior to the pre-disturbance, the Site had been developed with a nice Home, several Out-Buildings, Driveways, and Parking Areas. A review of available Aerial Photos (1990 thru 2022) shows that the original development did not disturb the Geologic Stability of the Site. Note that the Term "Site" refers to the "Improved Areas" within the total Parcel. This Improved Area is only a small portion of the Total Property and is primarily situated upon existing ground where the south-to-north slope ranges from 5 to 15%. It appears that the House is dug into the ground where the south-to north slope exceeds 15%. The House has a Basement that elevates the Main-Floor to an intermediate Ground Bench which has a small courtyard between the House and the near vertical cut- bank with its top at the north end of the gently sloping Meadow lying south of the House. The following Photos show the siting of the House: 7 Witt,A,.x AM% "Z1it�b.NY1(ffWt�1YMY Entrance to Basement. Note that the Main Floor Basement Interior Walls and Floor above is at about the same level as the Ground have no visible cracks or movement. lying east and north of the House. 2 Looking Northeast: An Outbuilding {at Photo's lower left}with its floor at the level at the northerly end of the gently sloping Meadow. The House's Roof Ridge {Photo's center} is approximately the same as the Meadow level. Note the space between the house and the northerly end of the Meadow, where the Courtyard exists. C. GEOTECH REPORT FOR UNDEVELOPED PROPERTY Prior to the time that any development occurred, the Historic Photographs show that the Subject Property was Geologically Stable. Only minor insignificant changing along the Shoreline. See the attached Google Aerial Photo Shoreline Comparison between 6/25/2023 and 6/26/2003 that show no noticeable Shoreline change. Even after the Original Site Development was completed, the Subject Property remained Geologically Stable. If we were to prepare a Geotech Report for the Subject Property [to prove that the very Original Site Development could be constructed without causing Geological instability of the Site, once the construction was completed and the Site became occupied and maintained ], it would have been prepared as follows: 1. Property Slopes: a. The attached Soils Survey indicates that the property has slopes from 5 to 15%. b. The attached Coastal Zone Atlas shows that the developed "Site", upon the Property, is outside of the delineated Unstable Slope [that exists along the Shoreline ] by approximately 100 Lineal Feet upgradient/southerly from its Boundary. c. The attached south-to north Elevation View [ Section A-A ] shows the Slopes thru the Property. The north wall of the House is a good 100' inland/upslope from the Unstable Zone. d. The following Photos show various Steep Slope areas [ of Stable Steep Slopes ] within the vicinity of the developed "Site": 3 Z: t a'k' a _ I.�f��J�'`..sf3�H��i1'Yi. _ar►:=.�` '.'T.lii�F E..����' �L4�' 2a. .... '•:S 1Fles-� 9Y9.L '- #1: Road Cut Slope #2: Grade of Cut Road is 29.4% or 1'-rise to 3.4'-run. Is 79.5% or 1'-rise to 1.25-run. Al . FP^ d m ,mil •.. _ #3: Road's Fill #4: Photos#1, 2, & 3 are for the Old-Road in Right side of this Photo. The Slope Is 90.9% or left view shows the placed Slope Protection [a Fracture-Rock Mat 1'-rise to 1.1'-run. placed by SDCI ].The placed Rock Slope is 73.9% or V-rise to 1.35'-run. The Valley between the Rocked Slope and the Old-Road is the top/start of the Natural Drainage Channel that the developed "Site's" runoff drains through. 4 i I y r =. a 3t.. hL .r .y H. W� s #7- The Runoff from the Subject Property flows down this Steep Marine Bluff Slope, in the area on the Photo right of the Bare Slope. I was not safe to take Photos along the succinct path. ;S'...+.a Y yYt>-.r.s... aiC' •�_W'�'�i.Y-.o,A'.'�.�r.Y[`" f.Ti.Y�:� #8: Looking up/south along a similar Ravine that is located immediately east of the Subject Ravine. This Ravine is similar to the Subject Ravine and is undisturbed. It has similar Stable Slopes with slopes measuring 90.9% or 1'-rise to 1.1'-run. 2. Property Soils: The published "Soils Survey of Mason County {Series 1951, No.91" lists the soils for the subject Property to be "Indianola Loamy Sand, 5 to 15% Slopes {lb}where the developed "Site" upon the Property is within the region of Steeper Slopes. 6 The attached Soils description provides details of these soils, but for the purposes of evaluating geologic stability and erosion characteristics, the following is true: (i) The single grained loamy sand is quite firm until disturbed and provides a sound base for foundations. This is evidenced by the fact that the existing Old House Basement Floor and Walls remain solidly in place with no visible cracking; (ii) These soils are droughty and primarily support a healthy Canopy but a sparce Understory. The undisturbed steeper sloped areas of this property do support an existing Canopy that prevents erosion of the slope's surface. When the Site's ground becomes exposed: *minor sloping areas will absorb the lighter rainfall {as the Site's Meadow does with documented minimum runoff thru its main drainage channel}; *steeper slopes will erode when surface runoff occurs {as do the exposed cuts and fills made by the previous Contractor when installing the new Septic System at this Site. However, the soils along the Shoreline of the Property are shown to be Sinclair Series soils that have a cemented substratum. Note that Photo#7 shows how the cemented substratum can stand Stable at a near vertical slope. Note that east of the Sinclair Series, the Shoreline soils become Rough Broken Land which would explain the nature of the steep slope that the Property's Ravine Natural Drainage discharges onto. No exploratory holes were necessary to confirm the nature of the Site's Soils. 3. Groundwater Conditions: There are no measurable groundwaters springing out of the Property's Slopes and the surface water runoff has not created any channel bottom erosion [ not even within the main Ravine's Natural Channel ]. It is reported that the Original Home could barely supply enough water for home's use by collecting the minor seepage that accumulated at the north end of the Natural Channel, before a well was drilled. 4. Upslope Geomorphology: The attached USGS and Soils Survey Maps shows that the upslope land is basically Flat and does not measurably impact the subject Property. 5. Water Bodies & Wetlands: No measurable waterbodies or wetlands exist onsite or up gradient. 6. History of Landslide Activity: Only very remote shoreline erosion can be found, as show within the attached Coastal Zone Atlas Map. No Landslide has occurred within the vicinity of the Site Development. 7. Slope Stability Analyses: The Simplified Bishop's Method of Circles is not necessary to determine the Slope Stability at this Site. The available Maps and the detailed examination of the Topography of the subject and neighboring Properties provides amble evidence of Long-Term Stability of the undisturbed slopes within this area. Upon this Property, it is only when the natural groundcover is removed, exposing bare soil, and/or, excavated soils are simply pushed onto and down steeper slopes that prior undisturbed slopes can become unstable. Note that the presence of unstable Slopes is 7 presented within the Coastal Zone Atlas Map and that these identified unstable slopes are measurable more than 100' north of the Site's developments. 8. Applicable Site Restrictions: Prior to the recent Construction of the new Septic System, the previous Site development upon this Property has remained very Stable. Unfortunately, the associated recent unnecessary excavations and disposal of the excavated soil, by merely pushing it down and upon an existing adjacent Steep Slope has already violated commonplace Restrictions. In addition, removed Canopy and Understory vegetation has also been disposed of by merely pushing/piling it down Steep Slopes. It is these violations that are currently being addressed/corrected by SDCI. D. GEOTECH REPORT FOR SDCI SITE STABILITY REFURBISHMENT Martig Engineering was not introduced to the SDCI activity at this Site until April of 2024. At this juncture, SDCI had previously placed temporary erosion control upon the disturbed Bare-Soil grounds, to prevent erosion during the 2023-2024 Winter-Season. I inspected the conditions upon the subject Property and the recent disturbances to the Site by the previous Contractor, made while installing the Mason County Approved new Septic System. My initial observations found.- 1. Piles of Canopy, Fruit-Trees, and Understory vegetation pushed down the Steep Slope situated northerly and westerly of the existing House; 2. An excavated swath into and up the slope between the former Septic System Site and the north edge of the previous Orchard Meadow. This swath was covered with a black plastic sheeting to prevent erosion of the swath's exposed soils, and the Bare Soil within the Meadow was covered with Broadcasted Straw; 3. An area where excavated soil had simply been pushed over and down the prior existing steeper slope, located northerly of the prior existing older Septic System location. This area was also covered with Black Plastic Sheeting to prevent erosion; 4. Stable steeper slopes northerly of the originally developed "Site"; 5. An undisturbed Stable Ravine, running northwesterly down the northerly sloping portion of the Property that was nicely protected from erosion by a healthy Canopy and its accompanying Understory; 6. An obvious Drainage Channel running northerly along the bottom of the Ravine that would convey the runoff from the previously developed Site. This drainage channel showed no signs of soil erosion, no exposed bare soil. Its bottom was covered with accumulated composted organic matter, suggesting that the runoff from the Property was not heavy enough to cause erosion of the organic matter. My discussions with Dan, of SDCI included: 1. The need to remove the Piles of organic Waste deposited down the westerly portion of the steeper slope, northerly of the developed Site; 2. The need to stabilize the sloping deposit of excavated soils that were pushed over and down the prior existing stable slope lying immediately north of the prior existing Septic System location; 3. That a path might be necessary, running from the existing driveway that approaches the 8 northerly portion of the existing House, to the location of the piles of disposed organic matter lying near the Natural Drainage Channel at the base of the ravine. This path would traverse the disturbed northerly slope and would also benefit the placement of erosion control measures upon the face of the deposited excavation soils; 4. That the Property Owner would like the look of the employed erosion control measures to mimic natural Rock and that a Dry Creek look along the path of natural runoff from the Property would be nice; 5. That SDCI had used larger Fractured Rock to form Erosion Control Mats to prevent erosion on previous Federal Dike and Levey Projects and could use that method here. I asked Dan to provide a description of this method which he provided, copy attached; 6. That SDCI believed that their permanent erosion control measures could be softened by including landscaping measures compatible with the thinking of the Property Owner. Unfortunately, I was not able to provide onsite follow-up during the initial Phases of the SDCI work, being diverted by emergency Heart-Care requiring major heat surgery. My ability to become actively involved again came at the time that the SDCI work had been stopped by County Order, due to the need to provide Mason County with detailed confirmation that their work was indeed following measures that will provide long-term Geotechnical Stability of their executed Erosion Control and Landscape work. Remaininq SDCI Work: In preparation for this Report, I have inspected and documented the SDCI work completed to date. There are two categories of completed work, Landscaping and Geotechnical Erosion Control. The work remaining involves: 1. Meadow: The Meadow Erosion Control is completed along with Tree and Shrub Landscaping, as shown within the followin Photo: 00 ''. rr ifin i_:4 The runoff from the Meadow has been reduced but the ability for it to drain thru its prior existing Channel needs to be restored. When the Gouge between the Meadow{upper end} and the prior Drainfield Area {lower end}was made, the Meadow runoff became diverted thru the Gouge and onto the excavated wedge of soil pushed onto the prior 9 existing northerly stable steeper slope. The following Photos show the location of the prior existing drain channel: i • 4#ji iJ When placing erosion control to prevent erosion within the Gouge, an erosion controlled Soil-Berm must be placed along the upper end of the Gouge to redirect the Meadow's Runoff back into its prior existing channel. As a Landscaping feature, a Dry Creek-Bed was contemplated within the Meadow. Although early work started this feature, completing it is optional. 2. Gouge: The existing condition of the Gouge consists of a bare soil sloping floor, with bare soil steep sloping walls on each side of the floor. The Plan is to employ the Fractured Rock Mat to the Floor with the walls laid back to slopes compatible with the natural existing stable slope angles. The Fractured Rock Mat would then be placed upon the laid back slopes. 3. Septic Tanks Area: The existing condition of the Septic Tanks Area consists of a bare soil level floor with short height bare soil cuts on both sides of the Gouge. The North edge of this area has a short bare soil steeper bank with its base at the south edge of the Pathway down the Site's northerly Steeper Slope [ Path that accesses the removal of piled organic wastes and facilitates the placement of the Erosion Control Mat]. The Floor of this area should be planted with Lawn Grass. To match the other erosion controlled slopes, the Fractured Rock Mat should be placed upon this area's bare soil slopes. 4. Path down the northern slope of the developed Site: This Path has been partially protected from erosion by continuing the placement of a Fractured Rock Mat. This method should be continued to protect all remaining bare soil along the Path. 5. Yard Area around the House: Currently, this area has stock piles of Fractured Rock that has been imported to complete the process of placing the Fractured Rock Matting of the remaining bare soil areas. Once this area is cleared and regraded to its prior existing state: (i) The Roof Drains and Yard Drains should be reinstalled and connected to the pipe that discharges the runoff from the House area into the upper end of the 10 existing Natural Drainage Ravine; (ii) The graded yard area should be replanted with Lawn Grass. 6. Natural Drainage Ravine: The prior existing stable Ravine Channel bottom has been Landscaped by placing a Dry Creek upon it, with membrane lined Pools where runoff water can pool, creating a pleasant view, Additionally Creek Associated amenities and vegetation have been added. This work should be completed. E. SUMMARY SDCI was employed for the purpose of correcting problems created by a previous Contractor. The Primary Requirement of their work was to secure all of the Bare-Soil areas, employing Best Practices that will prevent Geologic Instability within the long standing, historically proven, Geologic Stability of this Property. SDCI's work was strictly associated within the bare soil excavation and fill areas created by the previous Contractor. No new disturbances to this Property were made by SDCI. SDCI work completed to date is consistent with their years of experience and the investigations associated with Geologic Stability by Martig Engineering found that the Property is now and has remained Geologically Stable after reviewing all available published data and visual indicators upon the subject and adjacent Properties. It is extremely important to secure the remaining Bare Soil areas IMMEDIATLELY, given that we are within the 2024-2025 Wet Weather Season. This Report is prepared by Ken Martig, Jr. MSCE PE of Martig Engineering: Cy1ifd by:K ig, Jr. EPMagEngineering o 9 1� O rarer'•' Y Attachments: Al thru A: �GfSTE�fa 1. Google Earth Photos Showing Site & Shoreline Stability (2003-2022); roNALd 2. Professional Land Survey of Property, 3/8/2023; 3. Site Plan & Elevation View Sec. A-A; 4. Mason Co. GIS Map; 5. USGS Squaxin Island, WA Quad Map; 6. Coastal Zone Atlas Map; 7. Mason County Survey Soils Survey Map; 8. SDCI description of Fractured Rock Erosion Control Mat (3-Pages); 9. Mason Co. Geotech Report Checklist; 11 _ S= a�,4�� s ���� r a 1s, S 42.9 ' .ft31,2% _ r� P 5`' too p c 0 Lq DATUM lC41 I•.05' I sUNw.0 LLI ON-[- uVYN(!ONO NO 1 sOu1rz1C 0 rOWN 1Lc PC N!TO OOT R[uW!O NNTVOr IYCsM],M !R Y YCRN NO 15 m 0N5 T6 MASIRNOION SIAi[R],[MNCC MMWK i101Miu , 1 V TRACTS ,Kc,wluR rwrn.YRn IAuufM rw RNq+I' I I/! I/I , l� =d o e1,1,uI�W11,1lall tf 111'//,/,, � . . .; `,♦ , „♦"�1t,` ,1!,�/, 1 _�— ,w, --- -n,. _ur7 1;�0 1H.,,,\i1,411 ,, , ; .,d' ` ..`\`�N,J,1111 ,I, ,/' , . �'. '•-.m,. ' _ �. - n' 4',Yauul,�:,,ryl a u7•I,` % \,`.`...-''•m\ . �.,``11\1 11, I � / / ''• `._ � i q\PI�tl�ll�l✓ ` 1✓ , s'I f 1 I I. ,/I I ,� V —I /''' I ti isii�'� '.--^ -_ '�% �"'� 'ilnliliiihlnh1il11lu,o�,r ',u� /�s""•'-.uY i t•iii�\�����' .�f�ti�,3�/l 1 � � r �„�� , (, r^--]�]._� I-/ ;IIIII 10 ldI sYy /�!;�, �✓.IRC // /l,..o°irri r�,�r r 11 0 ''.%,,. / '��� II IIIIIIIII IIII(\1\\,'1`q,l, ¢wr /�'NL.. ri/ I,,,A,ir p,/ n/ A ,4'/I11111^•, { '._' --•I ; 1,1 1 ',i / NIa-�.\`♦. .��',. Y---- �l ( 1 1 r JN , Ilullinl\11,11N 111� `1/. � � rl..'s„Jrr/i •'•.. �, _ ��I1+yl,u, /t- R ( ♦ .` / Ir' . / {. /� wa wµJl/ , /I,IIi I ,N�11„1\I"`\J�o`.q�' r- �'u' "/I •''o;♦; ,,Ham, , q //I\I;`I`I`a.♦\. 7 1 p_A.Y. 1 ,.h r rw ``�\�`, ; III ,r /' "oom"4' , - '..�ri' /"� -P' s ♦�♦♦ .,\♦ /./ a wN.o..,t --- ^<' 1. ,"i`r ✓dC_ L'nl"'"�'� �JI''i/ ,p l� li `�Q�`\�i��i� �♦�oC♦ `:�'�^ i li.i'�.,'u/ u.ai..�./i, 1 ♦\ ^f.�l 1wP'• JI �'Lr' `CL ` ,r � 11 /j r(" / ,1\N1,1,,1� 1�♦` ,,/�i///',ii'i' m.Mnn'q,�.^ i; 1'}a�l`t , / ag ` q ,� �^-'��.•'---- �i\_i S 4--- -' rfea 1 1 ' ,4t5in N�II { , ,,/ ../�,///� >�'n�.u; /, ! i 1�1 I �, dI � \ ..• .�,.,.,i•�N.^...� . ,� lal\i,'{I /N' /ip u,'y�/,;;/i;y„fii / I i'ii1/r l +yr ', ` i� --,, . - .+. `--- r^•a._ IIII 1 1 1/ 11 1 1 m /n� nl I / / /I f , l , �,rll� / I f1,`,,,,,/, ��,. ,4 I( ,„U , , 1 ., w - - ,,, • , r 0 f /�l ry�• /���/"7 �/ 771; II,I/j / I �'1,/ /J//� / I1 \ !t Ihlull u•,.;�';/ �'l////li'111 /I])/�!(l�yl' ,II 111,1`/I/�d1f/(/1(i/Il,1l,� , ., E _ ;�q•,/,n i' / / -4�Y 1 `. fi t` / ,7 If/ I' I /, ////%J��/'I'1 /lyl I(1 +�11�1�1 //p,ll1��1 ��1\,1 {I 1\r •r�'i'/JI/ill , .'..Ir,:'y... lit III i(/„ //,//•r J• ,�{, ,,,1,,{�� „�„ .,`. , N, ,,, 1� `'j,,, V .c.�I'�:•: ' �( � •.µ' I �' r.i it ♦�s,\`a,♦,dv` \.♦�♦♦ ``,, 't 1 r';, , ,, , ,1111N1♦N�,,\,),� .,\�� 1 ,11�11//!Ir Ill�l, I ,111111//N/// 1/j/�7j� //Ill/•II IIII \\ 1\1111\A\♦\\N♦,�NQ„+„`\♦�,IJ�IIIv/I//I 1111, ;; � Y��. ...-{iT•1"...� ) g S,r.[ �r r , /1 �♦♦ `„ ` '��4/ n/f�,•ii a /i \♦ . 7,. ''sy \ �_' __- �, _ Ir....., , y,,. iJy(4, .♦.Ua ,,,�1`II\,}{Iit g14 131]ar�'I'y/' ^•,, I l !/,/ I I l I`♦ 1 , ,18♦\\\,♦\ 5 1111 II y, //I/i,i / C t /' �\ `\ J - f..;�f'f'n� ,' ,\ jll 1(d ll'A' `I,11 / //,11 +,11♦` 11@I'♦ I ♦ / f ,`\++1\11i,11 II ;pG41i��'.:,��' , ` y` ,.1,��.�;•`'` .n, �\ , y.`` �,.y:+ 1 Iq IIII ;1 1 I,I�,11,11,,;,♦, ,, ;,,,1�/,JI/l l�.' {,�q,,II /I 1 'S• . fir-' . ,— , ,,q ` 11 ; , '1 � i�/!!II �, I +•- d II \ 1 \p I 1 ♦////J/// II II IIIII F I ♦ �� � - -.,,,.. , `I I 1�. `\ / 11 �111!I 1 If11 1,1,1111 11„ �!] ,I u.0 I I%p♦ r,ul 6NI�'1011. /I�.•l'{ f 11////�%,/1I/11,11,�/'IIII 11 IIIIIt/ ,,`\♦ R1r rMf 4,/,IR 3 :,�.•ram i Q y}!!}yr'M'M � +71 1r �• ,f 1 i rA r i y'^'".•.•''J/' ,//jf/i/F ��v �v"'.Y..+•!'r•./'f .•"�r♦�•'♦'•' � �\J '�S• r,•.,.....�� ♦♦.�•'+•,•:�•F•• •'" 00 Cape Hor " J. I N ., . ,• � w..� ,,,, a n n e ry Point �Yu.i P M E kyY y�_y1y�L �d .. _ ••• •.•. 00 el or IF A0, �j, �..Yr � ;��` yK'�C ! ���jjjF Jf•7" i, ,/c:l,.i +.•.+..w� � ,a•••N ;�v.� MCiG;:,(;•2;\•�4:> }:/.' :^i: •:`tiA. ...•.Y•`fi'� �'w•.,d• .s+vr�' z+'.,�, �2'.G•3tl:yJ:•%�titrrit��•Y.rv.�v�a�Rl:{G�: �� ; �� .xw' '1t. i .... �Mf.l J' `✓ .rMr�4M��i ,� MI /4•4 w•�, Y J E 'Clime '�+ytrtl_ •r •y� � we :� y.�� �� r.s+ IL f r�'r•��/y�a�•(r`ra �p�., ..�,.eo rr a1N• .•I.rr.wyW�I. rMWrrw♦•. .+a • . - '�� 4 ,>! ..�-..I�Y✓Y,/• ,f ,�7' 8 I , .'��. .. . ^ I� rawly Mr✓' JIn Nr•�1'f OTMM NMYw•• Yw r.Y �Y•� rr '"/ .��... ',r/S i,:� r a � �$ �,"p , 'i1 'bsroyJry � I• 1 ., � ,A � � �> ,�.. j, .' � rr' Rai. a ' rr/:: � •r, w.r„ �°� '' d`pM ,, P '��'Ki.Iir{.�'W �"rrrwt��wT•�a�' a Nn'b A►/yf��IW4Y14?'� •+r/r tiwv �y r a,r} r 7 +:oPY f .. "w+M�Y rr.w r••••�Mr1.4 Y._✓./ /.+". r' ,.... •YPti,{�j�p,YAJrx•.._:,,gym Ill J rhJ, wJ. r^ MMrrrMMM����.. !" ° . r_,/rf r•.s rlitoirttjl(ir!'hVN—�y�i: �1Cy;y 1 ' ...� r - /I'I �,(+ � t � j • ..✓''w rdNl;; * •,�.I,7Ii'a. � !..n.. •r,• r�, a..; 7•..i , .. �1. M'� y R r _ � �, Y �' _ ' r ,•r � .r `'I '` M'nt r,, ,� �y'r as ,A'M1 I•!r .� �/'N� r/,,,r fYa as y �+ ♦ r +�, ,. """'T7 . ••I.IIr •") ••r•.1..•III• r r ti / • '• ' N eft riW �,rt r {.✓ � �.(.'.'� / �•�r �r „y ��•''{ � /••�• 4��'t t � < lrr,.11�r�'Y✓,s aryl. ry r f Jdd n+ r w ••.•'� �r� fI IA .l'/f � •• f • • • r r + yr/ • / �t,•4 }IL I/.rrr....•..... ...r., %•r •.w.r.,r..,ti• r I i�+ r rn•a'p,ry ►I Pr A,• • I' rr• �•`'" I�' r I'.5 4 r•4•••.•....rr..rrr••'' ///� i'/J/�r / f/J / �/� A +il✓/ .v� ••7 '/J6 4 •fi �••..l y..n,� ."•a.•.•r...r r �, "••.I 4 �ti,•.• • +................. r...9 ...Prl lr...♦rrrl+• r - � r 1 "• •~"'••`i+. \µ.me/y� ��• '•••'ti'l..„",,,� •" I' tr �/• � • , r '•' �•�•,/ ♦ 7 �, I•,••' t„yyJMY•�"` .r•/ . r1r„ivow ryi• r, i '•r • I / • Jr'yHtYYP�t r r r • ai••F " Mv��lkit i u�. P!' a•.•• , � •r ��•'••r•:...•I•� .•• r r�'• •+ o.���{� itr .�u� � .� r �• k1" i�1�IwIMt".�rtDz+hiil Y 1't. • ;,�f,t 0 . II I • r • ► r• r I/.w �rIr /I�,•/lr�.,�r r' +•�.�l'r srQ ' ! j� • •f • r r•• " r•r r •' ' • a,' 00 r • ��h r.,„, F. r `/i'•r 1 r•I r i�•r + r�.t .Y'.�r. � � � ���..` i `.I w�rrr• r• .,:c., -:� �,ry F "'.ry � ' � °�. � 1 • . I . .1�'al r / �a x;t'�v1yF ')yPI a �. f� i ' • � �•a,l .6i� •.Ir/,/' "A AIN If .,• w �+2, ��'«�:'li�0 �:k{ilr�•.ti,:},a•R• ��-a�7�1'�2F`✓iTti.i�,l''^.3r`!� ,.�•'��:' 'i '!�• Q. 'r' .�'r f �K .:h { y "rri. r 4 r ? r„y 30 SOIL SURVEY SERIES 1951, N0. 0 '��y' ' J� { ,�•1• J^hpY 1Jr, 1,'l� .��r•��$tl I�r�'Y.T �1 M�Vr.+�' ` ,�Y ` h MASON COUNTY, WASHINGTON �,� w' '«• �. ^: .� � � �7`'+, Indianola 1 ~Indi loamy sand, 5 to 15 percent slopes (Ibl.— This is the dominant soil of the Indianola series. It is associated with other Indianola soils and the Everett and • - 3 r> *"� '` ✓ '� '" ^ ac k ,1' '?'? Alderwood soils. �•j,yy < y ., r Forested areas have a 1- to 2-inch surface layer off organic litter consisting of partly decomposed needles, i»• ���� ' : � b , C. leaves, twigs, roots, all ]nobs. the surface soil, to a ;nti . �+ °, • f '' r� •+ r , l,f depth of 5 inches, is brown, very friable, single-grain loamy sand that contains a few rounded shot and m /ail + The t 7;4• "' r. hY,Ct ,,a�; t �,M.�,',��ti, �t � ; �� R ^i,,. � !+. 'a,, ;r", r � ,'' ;.s roots. The tipper 2 or 3 inches of surface soil contains ;' t• intermittent, firm or slightly hard, irregular aggregates stained with iron. The surface soil is dark brown when �• �cm `� M y tt + ` ` �°` ` at 7 moist. The nest 10 inches of soil a transitional layer, jj is slightly lighter in color than the surface layer and ri contains fe\ver shot. k���+*�d,}i'` ,t 4 ' y A� •, M a ' The subsoil, a pale-brown loamy sand, begins at 15 inches and continues to depths of 26 to 30 inches. It• is ;ac' `s F. ,t •�• �y'�y�� ` Y `}t . dark yellowish brown when moist. This loamy sand is massive but readily crushes to loose, single grains. Yel- low rend olive-colored sands are common. The subsoil �rftdually changes to the substratum which is gray ante qqrr f Cf � t4 r �a � " S, �'G�y, t a .'4b"a.'� _r�"• r� 'L i�,�'� c ark-gray sand. The substratum is inassivo but crumbles readily to sin a grails when removed. It contains sonic 4 �,r • �� 3 T'f� \ `�"s 'j' y' 5+ ' light-array, yellow, and yellowish-brown banal. "'. �:, `' ,, 4 4 r•t .. ��� � �.��,% ,., n ,� n t� `' A few pebbles are scattered throughout the profile where this soil inerges with the Everett or Alderwoocl soils. The reaction is medium to strongly Reid and is less acid-,vith depth. U86 and 811itabilit4y.—tllost areas are covered by second- r t y+ ' �t'FR CS 6yL • �t ° l�F 1lG4 y� j� +y �a�,4' 4r�,Q` 7 or third-growth Douglas-fir and lieniloelc heavilixed . with alder,willow, and other deciduous treesy m and shrubs. ,'y;.'�a/ •v • ;; ' r: �` ^r " ° 4 p •�+ This soil is so droughty and low in fertility that except L, i �`.. .• �,• r % ^'' r r i`i for hay and pasture, its use for agriculture is limited. r, r �� ` "•' `j' �� �'` ' '`' , 1 � t� • LL 7f , The best use is forestry. In some areas where supplies :I of moisture are more fa-vorable, raspberries and straw- berries grow fairly well if fertihzod. T111s soil is in capability subclass VIs and in site classes 3 and Yk for Douglas-fir. Indianola loamy sand,0 to 5 percent slopes(1a).—This w'r Y` z r ' w. + j,• wc:.� £:ty r,y�, r:�: inextensive soil is similar to Indianola loamy sand, 5 to 1G poi slopes. Normal] the supply of moisture that ' �` �I A P i Y7 1 P Y +�1 ry •t.h ? I plants Call USC is'5117111•ly greater because runoff is less. r ' Tgp 4 �f• ��i � /� k �� ;�'^' ° :•li :yy �W'� `+ ti�A�,�o �° •{W' "'� t�,; ei .., +' •.. ,Jti••t . 3. ' +t h. .S4! M� - !� �. -. -`'.�:���1�:'�i`.-]�fM�' '•�;-`„:' �: , •� ��``• �.,� �. '� /4: �y, •' �.{J1�.?..y�[�ry`�.p':'Jr`j�ar '� � +r .r.�': A $ 1.1.1 ArMOrCD SLOPE TUC ArmorCD SLOPE IiISTaLIaTIOf1S SUaLL nCCCSSarILg FCBTUrC TUC DISTFIBUTIOII OF SUM FLOW anD Decrease RU(1-OFF VCLOCITR ALL ArMOrCD SeCTIODS WILL Varg in DCPTR.SIZE.GraDaTIOfl.ReVETMeni anD Toe SCOUT DePenDUlg on TUC PrC-EXISTing FLOW PaTUS.NaTIVe SOIL SLOPES.anD SUrr0UflDing STrUCTUrCS.TUC Base Lager AfMOrVICf1T WILL COf1SIST OF OUarrICD STORE OF CLASS B QUarTZITC(1 -I RIPRBP)WUCrC TUC DISTUrBED SLOPES are BCTWCC(1 TITS COf1Crm FOUf1D8TIOOS.RILL Or GULLY CrODCD areas.anD Or TUC UfiSTaBLC Laf1DFOFMS Ifl TUC area.QUarrICD STont SUaLL Be A(1gULar anD FOLLOW a/C raTIOS OF n-35 BeTWeefl TUC LongeST anD SUOrTCST M.SPRCrICal DIaMCTCP anD STone WCI94T SRaLL COrrCLaTC BCTWEen 150-115 LBS Per CUBIC FOOT aT a Minimum.AT TIMES access TO TUC ArMOrCD SLOPE al-Oflg ITS Ef1TIN Dimension Or OTUCP Design feaTUreS IS rCSTPICTED;TO aLLCVIaTE eXTraneous If1STaLLaTIOO COSTS THE STOOe Mall Be USED as FILL MaTCrIaL IO anD ar0Uf1D PaTRS aLOFIg Or crossing PFCVIOUSLg ArMOrCD SLOPES.In SUCK SCCflarlOS TIDE RIPRaP WILL(ICED TO COfISIST OF aT LEaST 3 FraCTUFCD SIDES For InTerLoCKi(1B shear STHSS cOMPeOSaTIOfl anD UCaVY COUIPMCnT rOaD STaBILilaTlon.ALL ArMOrCD SLOPES WILL Uave a granULar FILTer anD Here TUC STOf1CS AFigLe OF Repose IS WITUIFI a range 15 PCrCCf1T OF TUC SLOPe.IT SUaLL FCaTUre a TRICKenED SCCOf1D Lager OF STOIIC aT TUC Toe For SUCar STaBIL12aTion. 1.1.2 ROCK CHECK DAMS CUCCK DAMS WILL Be InTrODUCCD In areas aDJaCCOT TO APMOrCD SLOPES WRerC TILE EXISTIng COnTOUrS DO FIOT aLLOW For aDCQU8TC FPtCBOarD.BUT May also Be USCD Over.Uf1DCr.anD PerPenDICULar TO PrOLOngCD 4I94 VELOCITY SLOPES TO UELP DISTPIBUTC COflCenTraTED FLOWS CSPECIaLL9 In Pre- EXISTIfIg FLOW PaTUS.ROCK CUCCK DBMS WILL FOLLOW TUe Same MaTerlaL PCOUIFCMCnTS as TUC ArMOreD SLOPES anD TUC PL8CCMCf1T/DESI9fI SRBLL VON Bg OCCCSSIT9.SPCCIFICaLL9 DUE TO TUC IaCK OF SCOUT PrOTCCTIOn OF TUC SLOPES B9 Uf1DCrCUT Or KCg-in PPOUIBITCD B9 TUC LanDfOrM Erosion CLassIFiCaTlon.mere Free Draining ROCK CRCCK DAMS WILL also Be CMPLOYCD aT TUC BASES OF SLOPES TO Decrease TUC CRaf10E OF LaUIICUeD STOIIe aT IFITefVaLS OF SLOPES CXCCCDiIIg 15:1. 12 COfISTrUCTIOn ACCESS PBTUS 12.1 MaTCrl8L anD GraDaTIOfIS ACCESS rOaDS as rCOUIrCD For TUC PrOSCCUTI0f1 OF TUC WOrK SRaLL Be MainTainCD(If1CLUDII18 SPrinl(LIUg For DUST COUTrOL SBFCTg PCrSOAnCL.af1D Traffic COf1TrOL)WITUIn TUC assignCD WOrK areas.c0(1slDeraTI0f1 sRaLL Be given TO TUC aVOIDaf1Ce OF IFITCFFerence WIN OTUerS.SaFCTY anD FrCOUCf1Cg OF Traffic,SUBJECT TO review Prior TO COf1STrUCTion.TUere May aLSO consisT OF COIISTFUCTIOII OF UaUL ROADS as Mall Be necessary For TUC conDUCT Of TUC WOrK.Lines,graDCS anD WIDTUS For UBUL rOaDS.SUaLL BE SELCCTCD TO FULFILL TUC reOUIreMCnTS For Safe anD CFFICIenT RaULRIg OPeraTions anD Preference SRaLL Be given TO one-Wag UaUL roaDS WRCII TRCSC are feaSIBLC. t22 RAMPS RAMPS SUaLL Be InSTaLLCD anD MainTainCD For access OF RaULIng CQUIPMenT inTO eXCavaTIOFI anD WaSTe areaS.LOcaTions,graDeS anD WIDTU are SUBJECT TO review anD cUange. 12.3 MainTenance TUC PCInFOrCCMCnT anD rCgraDIng OF TUC PaTRS WILL Be rCOUIrCD TO conTinue TUC CXCCUTIon OF WON anD WILL Be inSPCCTED anD rEVICWCD aFTer Major rain CVenTS.During TRe PCrSCCUTiOfI OF WON During TUC WInTCr monTUS.a FUrTUEr WECKL9 IFISPECTIOf1 Of ELEVaTIOOS WILL BE FIECDCD TO aSCCrTaIn TUC FraCTUring anD TUawing OF SLOPC MaTCFIaL 1.4 WaTer Diversion PaTUS 1.4.1 FLOW PaTUS Ar0Uf1D SEPTIC InSTaLL8Tlon PFCCIPITaTIOFI in TUC vicinIT9 OF TUC Pre-EXISTIng FLOW PBTUS are TO Be COLLECTED Over a BroaDCr area TO DIVerT excess IUFILTraTIOn anD SaTUraTIOfl OF TUC Drain FIELDS WUCrC POSSIBLE. 1.4.2 OverFLOW SPILLWags In TUC EVEFIT OF riLTer Or sUMP PUMP FaILUrC in TRC CaTCR Basins anD TUC OVCrTOPPlflg OF RIPRaP.ALTerflaTC SPILLWagS WILL BE IO PLaCC TO FLOW InTO TUC Pre-EXISTing FLOW PaTUS.InTC5tCTlflg MIXED FLOW RCBIMCS WILL Be COnSTraintD TO SUBCrITICBL DCPTUS TUrOUSU aDDmonaL Armoring anD Free Draining CUCCK Dams. 1.5 STILLIng Basins 13.1 seconDary SeDIMCOT Basins GranULar FILTMD RIPRaP BEDS anD naTUraL TIC-in FILT m KEY THFICUCS aT TOE OF ArMOND SLOPES SUaLL Be USCD TO aBSOrB TUC SCD]mcnTarg LOAD PrODUCCD B9 SCTTLIng MaTePl3L a0D OIL-gom conSTrUCTIOII anD Repair OF TUC SLOPES. 1 131 craDUaL FLOW VarlaTlonS CUanges in AngLC OF SLOPC anD SIZCS OF MaTCrIaL SUaLL Be USCD TO STIFLC TUC aCCUMULaTCD FLOW raTCS OF runoff anD UCLA CSTaBLISU SLOPC VMT8TIOn.PrCVCnT CUannCl BralDing,anD aLLEVIaTe U9DraULIC Pressure al-Ong WIN UIgUCr VOLUMC SCDIMCnTaTIOn. 13.3 TUrBIDIT9 OF TraCTlonal-anD LOW DenSIT9 FLOW TUrBIDIT9 WILL Be TCSTCD anD Be BrOUBnT TO as LOW as IS FCaSIBLE WIN TUC FOLLOWIng malnTEnance Measures anD LOW TUrBIDIT9 PFaCTICCS;4a9 anD STraw WILL Be KCPT TO a minimum In aCTIVC STILLing Basins UnLESS IT IS a TEMPOrar9 anD Or non-InUBBITED WBTer BODY.TUC Use OF AOUaTIC PLanTS Can Be CMPL09CD TO CACOUra9C TUC FILTraTIOn OF WaTer anD SUPFaCC DeBris.Keeping aLL sTILLIng Basins TO as LOW OF a WOFKIng 4CI94T EIS POSSIBLE WILL UCLP WaTCr£XCUange anD Lessen sTagnaTlon.TUC MainTCnanCe OF SUMPS anD FILTers aLOng WIN TUC COrreCT aPPLICBTIOn OF CCrTaln CaLCIUMS anD SULFaTCS WILL Be IMPOrianT TO TUC Long Term UPKeV OF TUe WaTers COnDITIonS. 17 Erosion ConTrOL BMP SpeciricaTlonS 1.7.1 BMPS anD COnTaMInaTIOn Sources TUC area OF Bare SOIL CXPOSCD aT an9 One TIME B9 COnSTrUCTIOn operaTions SUOULD Be KCPT TO a Minimum.COnSTrUCT Or InSTaLL TCMPOrar9 anD PCFManenT erosion anD SCDIMCnT COnTrOL BCST ManageMenT PraCTICes(BMPS).BMPS Ma9 InCLUDC.BUT 110T Be LIMITCD T0.VCgCTaTlon cover.STPEaM BanK STaBILIZaTIOn.SLOPC STaBILIZaTIOn.SILT Fences.COnSTrUCTion OF Terraces.InTercePTor CUannCLS.SeDIMCnT TraPS.InLCT anD OUTFaLL PPOTeCTIOn.Diversion c44anneLS.anD SCDIMenTaTIOn Basins.Remove any TCMPOrar9 Measures aFTCr TUC area Pas Been STaBILIZeD 1.7.1.1 FBCILITICS anD WON Areas Erosion anD SCDIMCFIT COnTrOLS MUST Be PrOViDED For onSITC Borrow anD SPOIL areas TO PPCVCnT SCDIMCnT From CnTCring nCarB9 WaTCrS. TCMPOrar9 CXCaVaTlon anD eMBanKMCnTS For PLanT anD/Or WoFK areas MUST BE conTFOLLCD TO PPOTCCT aDJacenT areas. 1.7.1.2 WaTer Resources MOnITOr aLL WaTCr areas aFFCCTED BU COnSTrUCTIOn aCTIVITICS TO PPCVCnT POLLUTIOn OF surface anD grOUnD WaTerS.DO nOT aPPL9 TOXIC Or UaZarDOUS CUCMICBLS TO SOIL Or VCgCTaTIOn UnLeSS OTUCFWISC InDICaTCD.for ConSTrUCTIOn aCTIVITICS IMMCDIaTCL9 aDJaCenT TO IMPalreD Surface WaTCFS,TUC TCST EOUIPMCUT MUST Be capaBLe OF ouanTlF9ing SCDIMenT Or POLLUTanT LOODing TO TUaT Surface WaTCP WUCn PCOUIFCD B9 STaTe Or FCDCraLL9 ISSUCD CLean WaTer ACT PerMITS. 1.7.13 WCTLanDS DO nOT CnTer.DISTUFB.DCSTrO9.Or al-LOW DISCI1ar8C OF COnTaminanTS InTO an9 WCTLanDS. 1.7.1.1 Air Resources cOUIPMEnT OPeraTlon.aCTIVITICS.Or Processes WILL BE In accorDance WIN aLL FCDCraL anD STaTe air emission anD PCrFOrManCe Laws anD STanDarDS 1.7.1.5 ODOCS ODOrS FrOM ConSTPUCTIon aCTIVITICS MUST Be COnTrOLLeD aT aLL Times.TUC ODOrS MUST Be In COMPLIance WITU STaTe rCgULaTions anD/Or LOCBL OrDlnances anD Mall nOT ConSTITUTC a 41CaLT11 UaZarD. 1.7.1.6 FUEL anD LUBrICanTS STOrage.FUCLIng anD LUBFICaTIOn OF eOUIPMenT anD MOTor VCUICLEs MUST Be conDUCTCD in a MannCr TUaT aFFOrDS TUC Maximum PrOTCCTIOn againST SPILL anD CVaPOraTIOn.FUeL.LUBFIcanTs anD OIL sUaLL BC ManagCD anD STOND In aCCOrDanCC WITH aLL FCDCraL,STBTC,RC910naL.anD LOCK Laws anD rCgULaTIOnS. 1.7.7 STaBILIZaTlon PraCTICCS TUC STaBILIZaTIOn PraCTICCS TO Be IMPLCMCnTCD Ma9 InCLUDC TCMPOrar9 SeeDing.MULCUInB.SOD STaBILIzaTIOn.VC9CTaTIVe BUFFEr STPIPS.erosion ConTrOL BLanKCTS.PrOTCCTIOn OF Trees.PreServaTlon OF MaTUrC VegeTalion.CTC.On UIS DaIL9 COC RePOrT.TUC cEscL SUaLL recorD TUC DaTCs WUCn TUC MaJOr graDing aCTIVITICS occur.WUen ConSTrUCTIOn aCTIVITICS TemporarIL9 Or➢ermanenTL9 Cease On a POMOn OF TUC SITC:anD WUen STaBILIZaTIOn PraCTICeS are InITIaTCD. 1.7.2.1 PerManenT SeCDing WUCFl TUC InITIaTIOn OF PCPManenT SCeDing IS STOPPED Due TO Snow Cover Or arlD COnDITIOns.PerManenT SCCDing SUM Be InITIOTCD aS Soon as PPaCTICaBLC. 1.7.2.2 TCMPOrar9 SCCDing anD MULCUIng WUCn TUC InITIaTIOn OF TemPorar9 STaBILIZaTIOn MCaSUrCS IS STOPPED Due TO Snow Cover Or arlD ConDITIons.STBBILIZaTiOn Measures SUaLL Be InITIaTCD as soon EIS PraCTICaBLe. 1.7.23 Erosion COnTrOL BLanKCTS Erosion COnTrOL BLanKeT may Be InSTaLLCD On STCeP SLOPes anD In Drainage SWaLCS anD DITCUCS TO ProTCCT FInISUCD graDCS From erosion. 1.711 TCMPOrar9 STrUCTUraL PraCTICCS 2 TCMPOfa g STrUCTUPBL PraCTICCS SUBLL Be IMPLCMCOTCD TO DIVCPT FLOWS FCOM CXPOSCD SOILS.TCMPOParIL9 STOCC FLOWS,Or OTIICCWISC LIMIT runoff anD TUC DISC48r9C OF POLLUTanTS From CXPOSCD areas OF TUC SITC TO TUC DCgrCC aTTainaBLe.TeMPOraF9 STFUCTUral-PraCTICCS SAL Be IMPLCMCnTCD in a TIMCL9 Manner During THE COFISTFUCTIOn Process TO minimize CrOSIOFI anD SCDIMCFIT rUnOFF.TCMPOrar9 STruCTuraL PraCTICCS S44aLL InCLUDC BUT nOT Be LIMITED TO TUC FOLLOWIng Devices. 1.7.2.1.1 SILT Fences a TCMPOFar9 STrUCTUraL PraCTICC TO minimize erosion anD SCDIMenT runorE SILT FCUCCS SHALL Be PFOPerL9 InSTaLLCD TO CFFCCTIVCL9 rCTBIn SCDIMCnT IMMCDIaTCL9 aFTer cOMPLeTIng eaCH PUBSC OF WON WUCrC erosion WOULD Occur IU TUC Form OF SUCCT anD PILL CPOSIOU (e.g.Clearing anD grUBBing,eXCavaTlon,eMBanKMenT,anD graDlna SILT Fence Barriers SUBLL Be IUST81-0 al-Ong THe DOWn SLOPe BOunDaru OF aLL DISTUFBCD areas Prior TO Beginning LanD-DISTFUBing acTIVITICS In THOSE areas.SILT Fence Barriers Mau Be InSTaLLCD across DITCHES OF SWaLCS BUT FIOT WHEN TUC Drainage area IS greaTCr Tian 1 acre. 1.7.7.4.2 TCMPOrar9 ROCK CHCCK D8MS ROCK CHOCK DAMS Ma9 Be USCD TO NDUCC Erosion OF TeMporaru Or PerManCUT DITCHES Or SWaLes.T9Pe 1 POCK CHCCK DAMS SHALL BE USCD WHen TUC UPSTrCaM Drainage area IS LESS THan 2 acres.TUPC 2 POCK CHCCK DAMS SHALL Be USCD WHCn THE UPSTreaM area IS Z TO 10 acres. 1.7.2.1.3 STOFIC COnSTFUCTIOn EnTrance A STOne COFISTrUCTIOn enTranCe SHALL Be COnSTrUCTCD WHerever Traffic WILL Be Leaving THC COnSTrUCTIOn SFTe anD Move DIreCTLu OnTO a PaVCD rOaD.STOFIC COnSTrUCTIOn enTranceS SHALL Be rCMOVCD 8FTer TUC SITe Has Been FInaLL9 STaBILIZCD. 1.7.2.1.1 TeMPOrar9 SCDIMCnT Traps SCDIMenT Traps Ma9 Be COnsTrUCTCD BELOW DISTUFBCD areas WHEN THE TOTAL COnTFIBUTIng Drainage area IS LESS Tian 3 acres.SCDIMCFIT Traps. WHen USED.SHOULD Be COnSTrUCTCD Prior TO DISTUFBance OF UPSLOPe areas.SCDIMCnT Traps MUST Rave an InITIaL STOragC VOLUME OF aT LeaST 35 CUBIC WDS Per acre OF Drainage area.HALF OF WHICH SHALL Be In TUC Form OF a OUaSi-PCFManCnT POOL Or WET STOrBge TO PrOVIDE a STABLE SCTTLIng MCDIUM.TUC remaining HALF SHALL Be In TUC Form OF 8 DraWDOWn Or Dr9 STOrage WHICH WILL PrOVIDC CXTenDCD SETTLing TIMC During LESS FrCOUEUT Larger STOrM CVCnTS. 1.7.2.93 Diversion DIKES Diversion DIKES Ma9 Be COFIsTrUCTCD TO DIVCFT rUnOFF From UPSLOPC Drainage areas aW89 From UnPrOTCCTCD DISTUFBCD areas anD SLOPCS TO a STaBILIZeD OUTLCT Or TO DIVCrT SCDIMenT-LaDen runOFF From a DISTUFBCD area TO 8 SCDIMCnT-Trapping FaCILIT9 SUCH as a SCDIMCnT Trap Or SCDIMeFlT Basin.DIVCFSIOn DIKES SHALL UaVC a MAXIMUM CHannCL SLOPC OF 2 PercenT anD SHALL Be aDeOUaTeL9 COMPaCTeD TO PPCVCnT FalLure. TUC Minimum HCIgUT MeaSUrCD From TUC TOP OF TUC DIKe TO TUC BOTTOM OF TUC CHannCL SHALL Be 18 IUCHCS.THC MInIMUM BaSC WIDTH SHALL Be 6 FCCT anD TUC Minimum TOP WIDTH SHALL Be 2 FCCT 3 TCMPOrar9 STPUCTUrAL PrBCTICCS S48LL BE IMPLCMenTeD TO DIVCPT FLOWS From EXPOSED SOILS,TCMPOfarlLu STOre FLOWS.Of OT44CPWISC LIMIT runOFF anD TUC DISC48fgC OF POLLUTanTS From EXPOSED areas OF TIDE SITE TO TIDE Degree aTTain8BLE.TCMPOrafu STfUCTUfOI➢racxes SHALL Be IMPLCIVINTED In a TIMCL9 Manner During THE COFISTfUCTIOn Process TO minimize erosion anD SCDIMCnT FUME TCMPOraru STfuCTUfaL PraCTICCS S48LL InCLUDC BUT nOT Be LIMITED TO THE FOLLOWInB Devices. 1.1.2.4.1 SILT Fences a TeMPOfaf9 STrUCTUfaL PraCTICE TO MInIMIZC erosion AnD SCDImenT funOFF.SILT Fences SHALL Be PfOPCrL9 InSTaLLCD TO CFFCCTIVCU reTain SEDIMenT IMMCDIaTCL9 aFTer COMPL0TIn8 eaCH P44aSC OF WON WHEN erosion WOULD OCCuf In T44C FOrM OF SHCCT anD TILL erosion mg.CLearing anD gruBBinB.eXCaVaTion.emBanKMen.aF1D gfaDlna SILT Fence Bafflers WILL Be IF1STaLLED al-Ong THE DOWn SLOPE BOUnDaf9 OF aLL DISTUFBCD areas Prior TO Beginning LanD-DISTruBing aCTIVITIES In THOSC areas.SILT Fence Bafflers Mau Be InSTaLLCD across DITCHES Or SWaLes BUT FIOT W44erC T44C Drainage area IS 8feaTCr Tuan 1 acre. 1.7.2.4.7 TCMPOfafu ROCK CHOCK DAMS ROCK CHECK DAMS Ma9 Be USCD TO NDUCC crosion OF TeMPOfaru Of PCfManEnT DITCI4CS Of SWaLCS.TlIPC 1 rOCK C41CCK DAMS SHALL Be USED WHen THE UPSTfC8M Drainage area IS Less THan 2 acres.T9PC 2 fOCK CHECK DAMS S44aLL Be USCD W44en TUC UPSTfeaM area IS 2 TO 10 acres. 1.7.2.43 STOne COnSTfUCTIOn £nTfanCe A STOne COnSTfuCT10n enTfance SI4aLL Be COnSTfUCTED WHefeVEf TraFFIC WILL Be Leaving T44C COnSTrucT10n SITC anD MOVe DINCTL9 onT0 a PaVCD rOaD.STOne cOnSTrucT10n enTrances SHALL Be MMOVED aFTCf THE SITE Has Been FInaLLu STABILIZED. 1.7.2.4.4 TCM➢Ofafu SCDIMenT TraPS SEDIMEnT Traps Mau Be COnSTfUCTCD BELOW DISTUfBCD areas WHCfC THC TOTAL COnTrIBUTIng Drainage area IS LESS THan 3 acres.SCDIMCnT TraPS, WHen USCD.SHOULD Be COnSTfUCTeD Prior TO DISTUfBance OF UPSLOPe areas.SCDIMenT Traps MUST Have an InITIaL STOrage VOLUME OF aT LeaST 35 CUBIC 9afDS Per acre OF Drainage area HALF OF WHICH S44aLL BC in T44C Form OF a OUasi-PCfmanenT POOL Of WCT STOra9C TO PrOVIDC 0 STaBLC SCTTLIng MEDIUM.THC remaining HALF SHELL Be In TRe FOrM OF a DraWDOWn Of DI u STOragC WHICH WILL PrOVIDe WNDED SETTIIng TiMe During Less FrCOUCnT.Larger sTorm CVCnTS. 1.7.2.13 Diversion DIKES Diversion DIKES Mau Be COnSTrUCTCD TO DIVCfT fUnOFF FfOM UPSLOPC Drainage areas aWa9 FfOM UnPfOTeCTCD DISTUfBED areas anD SLOPES TO a STABILIZED OUTLET Of TO DIVCrT SCDIMenT-LADCn fUnOFF From a DISTUfBCD area TO a SCDIMenT-Trapping FaCILITU SUCH as a SODIMenT Trap Of SCDIMenT Basin.Diversion DIKES SHALL Have a MAXIMUM CHannCL SLOPe OF 2 PercenT anD S44aLL Be aDCOUaTCL9 COMPaCTCD TO PrCVCnT Faiwre. TUC Minimum 14ei844T MeaSUfCD From THC TOP OF TI4C DIKC TO THC BOTTOM OF THe CHanneL S44aLL Be 18 IncM.THC minimum Base WIDTH SI4aLL Be 6 FOET anD THC minimum TOP WIDTH S44aLL Be 2 FEET 3 7 V • I �r , •�' y .! J y 11 ©oo` S,y d h< , yy 7 4r .t r 1 f yu Shoreline Comparison Google Aerial 6/25/2022 Google Aerial 6/25/2003 t-� \ II(Hlr/u"/IIII' I I I/, p,_�}nau:u —oLI 1 ' Alit loft lilly�i�/i/'%:ii%'•�: 1 / � � �,I 1 +�• 1 TRACT 8 Ir•a uranc.[:Acunlnl.lr[Avula rle e!q+f EMI�]iiru VY , 1,11111 I11 IIII ll/1 fNl/'/'/'%— ♦'/ ' 3»•.`� , .1 �ItF%I„(,fgr(f„`,`Ilj1l/,,�,,,' . ,;/-;�/ .. ;^.\\,AV A\'C 1 111 1 11(11/ 1N\ [s111 tltlll / J' \ \ 11V 1 1 / rmHbo'[ 11.-.11�a y}aa' M III ll/� \ -.I»♦`A\\\\\♦,111\\`1 11I, I I"1/Il'i�' / \..LC•' ww .its. A♦_S 4 1\\INaa. u4h�r(� . \�.•..��� 9/a l\\,\\1\1 {1\ 1 1 3,11,,; ,[ 1 '_ i - 71 ti' N Naas\NNII10�5jj1.I1`{,,yl ♦ 31 \,,,/ \/ r_u �'i �I/.:r aa�J//i/I!lyyyi\ 'I��/h/,,V✓/t"� /1 \ ' IF _ rt S' 1 `. `.♦ r: 3 jl IIII IIIllllllll"I I{\(1\11`I S1.i5 / . .M•^ /rfr Imo'%Nlif�,4 II/N'[/// n I / /' t '' C LL IS. 1 1 \' _ _•»l.^^ ♦ _,- /�)^,. y� �i I t tun\ \IP�1d _li^ /�•Ip_,�R, .ry/ //."'y/�� ' /h/ll,uu ``` / / I 1 \ ``\ +Pa wly I .ue•... .__ ',� `+. wlfN wH. I n ,tll�llllfl,l�1�1,111,,\I\'��J�� [ %ROE,/ ,��fl t•��Iiii'llli n,. /1, - �hy�j;llllll` 1 / R ( , % \ 1 ! _ \1 ♦. [�,� / 111 / C,',1,'l',,HS� , l 1♦\♦ 1 /'{RL ♦ / 1 ♦ / ).a•MLL I ,, ,I`;YMi '• ,\\,,,,,,\„ ,_. _ , /, ,..yv r4,;,,,y;)f',,% �g/,t,\\,v\♦, 1 nDoe[n:c[TYYf .\ ♦ � ♦� '[ 1----, '•`i, Ili, ��{a♦F \,...: \A�P�\J\/__I r�r r ��/i''�'y"mee/'i _ a."y ' 1\C ,a;l]�! % I J ♦\ 1 \ lain I`a,.• : ; 1 , 'I i, 111\'1111\fool\1\\\w--// / / / Ij� Mlo)%//l/ I '1 \`/ \�\ 1 I 9I 1• `� \ ' - _.-_ 1.,'"♦ / Ir' . ( I�I 1 •�i,1»i u11't�ll`II'1 1 , �,/,�� i II11�'1V`�aOK 1111+ i 1,, ».ei!f 1IIU11j111 III%i1//i,/% %%'/[i/iii%'i'yii�i'iiN i IIII✓rl / � +`' \\ y'` '` ....'' 13u_.�/,,"♦` - r�' II II 1 / / /5/.!./jil ' / lass 7. I�U II \ \ ' �'� '�A.. .•♦ __ Milt I 1\,R I,11 /INl n l l �I1I n�l1 I/l�'r l l�t iii/�/4//,rwl u�ii i ia'wa' a '/iiii/lr�/ ,. J_ r_ 1 �♦ T . ,� / _ _a� ' �' ♦ / I``,�'`— \, 1 1111/IN/N�III�I/01'1tr/( ({�1�1/�(,C� erul/ N y4/q/0 I / ` TRACT A '�,�A,Ill 11"1 I /iI//llll11111 till ll,ll Ill!/',,/^��%/rl"T'PCS'T1" l///�/,1// IC1A �l/I/IH I /' C /I, /I//�/ t \ `♦ I)C _ _- _- IPA♦„��--w"\ ` - .•' l tG,!4 ll,I II' V�' ,1/!!lIt II IIII�III�ii'r illd Ji/if/i���%/'�iiiililiilla` Iiiii'/1j rl Cppa�»NTS3Sp ' '•Y '•'I"-P" `�fir-^':♦,_j�';I ^ H` l 1/I II /111\\, 11 ♦1 , l�/I/1i 1 / ___--' I \ ♦ ' /I II tti'llf'iC• Ill l;li'%; //Fill iitii I%I'1 j 111\\IN'111Nr(,SNI,\\ IIII \\[ 191'. r q/ 1 I !^, 1 -♦ ` e. ` t ;/ Will ll;l. III IIIII�•;;,;;;1/llll/%I/;/��3y/rlr�;,, \11;1110,,1 `; k ,aL4',� / �["` =- .� c•�� S �`�� ` OIL C`. lLlllI/1%i�i/I 'Ill ii'l/' i �l%.i1��1�1/ 1 ,1,11 \11, If�1\`��1�1\\�1\1��1;1"`�1y,♦�.`:�♦NY �11 �C"S(I'+1511'3%� um'% :'•' .. s1i (L,�Ni\-.��.,:�.•�....•.11 ` `�-�up wi:ia, �SIL. .1 1 1 I t 11"Ir/1//r/ 1/lI l . ... ,,//,F II ' ,: 1 , I\1\, fi�♦"; IIa�' F[ IIIrI ,lu+ - `1=: .. ♦ ul.n 1' I,InC ! Ihl ll/I, 8 11f 11. R /,/1�11/ foot 1\ , , , I"A1+\,\11`\d 11 C?,1`�,♦♦♦\1`�i�J.gn iiii' \I1�\♦ ` \� :` 1 I ;1 ' s 1 \. 1 \';.1\�i,�R ,� .♦`4 li;kl I tttt�p'�/ '] r�r i%�1/f 1 �'fc `\`�11`. 1\ililil/�� �� "��.% \\1\♦ - i I I �'. \ ---_--'— 1,31ai�flldhl i //1 1{ 1 1♦ 1411II�',✓n / / ` - Y' qq LLI,,II1111/II 11, / 31 11 . 1 \ /,I, ,I,,, {,III NuIN{. ,, /./,/.,, f '7•�j { �� l•V \y�� , ram- A , ,.-.,,♦ Ii1 ,%tl//1%'lllll 1'01111 fill :I11I \,♦\,( ;{11 R 1)/11/11,�lllii'Wit,„11^i/i4/I'//�l/�iiii%i" ,A' `y♦ VV\.T.♦.....,_/' a i� -'/` / \ ///,\IIII /11111 1 I 1 III 1 1� 1 1 111 , Ill///�/ll ll Ill'l rlll�l�llhli il'I�iij Ifh l%/l1 [ �' / 'j 1 ,% / \ l % !"-'"``♦ / 1 I/'_"♦\ ♦•' 1 '¢, '» A�0%;�N \ \ .ur Ir[s[w rte m» ♦ p 1 „w.•wt 1 �` t WaR , +nt lwE 41/1 RCR» y� ] or ]o' ,o• w 1 LEGAL DESCRIPTION QQ MONUMENT NOTES TIME -A' �t j 0 O J —O[SC 1-1 PA.Y[EO III--V..g.IN 2.tl',,91 1.fW.0 1'RMTS—NIIN PYNCN. !./WNO TO.ll HTrN yl:L&W WRRto-.C%M 111e3'• T[WIWrIF RISER ALL InAT I•:YATKIII Of COv!AVY[M Lpt e,S[DIIDN 10,AH0 Oi MC NDRTNNCSI OUARI[P OP TNC ]./OUHO 1'NW IIK. :]OAgI TpwSIORNEA OMVfL DATUM ,NTNC,ST O.PI[R 01 S[CRCN 20.ALL IN TOWNSNp]0 NO N.MVMC 7 WLSi,W,u„N UASCN /.FOUND�2'RLow W M TC AN CN.PRC6'OWR 11]OS', CO".W,QNIICIbl.PARCAAALT D15WISCO AS FIXIGWSI 0]'NC-]p'A)'C MC4 CALCUNRD PO!IIgN. 0 OR[-1''W CIRf 9W S./OIN:O 1/r RLDN WYM YELLDx KM IYANLD'ICNTi II]u'. tl wY IrrO TACK NORQVL-WASWvRO0tON STAR 1.1 CDCROIWTLS, OCCINNINO AI THE NORM OYARTVI CCRHCR 01 SND SCORCH 20; OC•N OTq I'C IROM CALCUTATED pNTIVIR. D IRON PIP[ .lU 415 NIO OS/3011 OVCD 0:1 CIS TIES 10 111CNC1 SWIM OOurA)'EAST.110.11 ICCTI 0. FOUND 1/I'REO R WITH TELLOA'CAP.RAKED%C11R T:3D3', O ALOVI NID Up CONCRETE uONV.EVTl LSNC WASwrwon St"t REFERENCE xETNORK. 1HGICL SWTN N'SO'R1'CAST.TARALLiI'ARN IN[xORtn LINE C/SND 9[CTIO'r».2L000 IE[': 00'61DA7']]1r/ROu DALW:ITED IOSIAOn, �SCl S/0'RESNI WIN YfLLON KR11GL- THEIKE NgNN OpA7'A1'WfSf,]90.00/ILT TO TNL NORM UNE Of SAq SECTION 21; Up WAAfD'IS}I0,])AA'INV3 ee BASED Oil CPS A[S TO MONVNENIS TII[IICC NCRIII W24'00'WIV 10 TIIC IXDDL Or HAun(RS{EY IML7; U.AINO NASNIIIMIDN IT RFIFANCE NEIwDRN. THENCE RORIHRLSTC]l ALONG SAID SHNE,i0 A"MRT NOW GO]A'OO'WEST OF THE POINT Or UTILITY Nor LINE TYPES OECAVNu'0; THENCE SWRI 00•!K'CO'C.V^I IO INC FORT OI s[OwxR,O: MLM"3""N NCRCQR ARE FROM FIELD wPPIIK VSDl AMC rEV:E SITE DATA s.o LAND B!nc IUD RNOWry AND DE]aocD AS TRACT A or S EY REEDa9ro u+YOLuuE I or SCAfKE AIpyRIC WI L5,NID LLNPNO VINT IARII 4ANH5 tAWNO tOC 10(t_1 SURVM,IA'.[!0.AlIOfOR'S 111E F0.]I)]Clt rDCu A UTLTY lOURVO t[IMC[.DUAKD L,MAO Not tp0UN0 tOP •�10/ tOP tPN: i]031-73-C[010 ONLY SHOV.N AS Al x WTE AIIO SMIlLD BC WDr, OUIN!C i1L[pnOHE AOCRCSS: 01 IE IKf OOO MI F.Mm A wd AND suOJ[CT 10 N.L Or THL RWM 111LL AMC:NTCREsi C AN, ,'P IN NAVr r0?HE VIFt1NE C[kl$IRNC110N.N0 IWV1pN OF WAIrR 11A[{DUXO. OUPoCO PO»U -� - - -.1•-� SMLT WR IElOA PulAP05IIN Ls�40 F�LEIui�'W piN S�OWVTpN IUMC RLCd10[DN VRV%J4[p�'OI'V6Uq�tiM IA0[ uNp0Op�R CCfROVR 00.AUCRDR'S lot 1q.2u3N. -OR CwOvQ SURVEY NOTES of uxL t —————— ----_— I- INSII LINED;SOKNIA SAK]TOTALSTAl10N IAM•WCON Vn CPS, 5EC0011 URC —'— �I,,� ^ /(I I E ^` `♦\\♦,\1\•L 1',1 1332.. 1qs 6UINUMUtCY..5 OR CRCCECO THE STANDARDS 01 WAC]]2-130-090 Y •//// \ ,1I1� 1 ` ♦ ♦ iP\ \ ], fYAV[T CCYIIICD 0]/10/]023 PII IN AM wy, `,1 S.NL u0nuu[xTs snoRN Ai FOVxD NSnrD 0]/702]x 11 707]. y ! S.WRPOSC G IOICCRIPNCLL WPpIVO Q r0A N)VPf CEY�OPYfIR W 6RC. `1-8�- ��R\,\�\I`\I R. Lomoups WwE[.�An,N[o rpeu nlLo IIIPprw.,•eDNTWRs SnoNR. REFERENCED DOCUMENTS \\1 1\ Y..1N7eCAF(V1C1 WA9 R[1AYED OT KAI"Ur.l AITIt TO CO.1,ETC A 11M.MART NTS 1 I \ AND 10POCRAl SVRVLY 0/UISON COUN11'SPN 22%9-)D-00010. I• ADS FRCS J.OLp MI 74i]0) !.^WIOARY ULCUTASU PCII RVLRUCCD 000UMCNi I. 7. SIATVrORT WMNMY OECD FILED VIIDIR AIN 2101111 0 xLIL ON SR[COHIIW[D OY OWNER.SOW CC 0,WATER IS M. TIATCA TLANS I l/ At 1KRM CIID Of sRE JUST RLrD",BAVW, / ,0 \ I 1 I 1 t!// / 10.w00D[N OCLK AT NORTH PDNI1011 Or HODS[WAS NOT LYWEO. i � I i I I'l f n.»ta wERE NOT LAPPED DN snc. EASEMENT NOTE i HOUSE DETAIL 4 \PI /i f/�i'I 1 NN r sCMpn FOR P.V.O.N0.3 01 M1W CWN Y,WASHn010N, / / D PAURC XORMw[ST OLLL RCC010lD ON 1NY II,10)7 Al SCALE I'll V /'/ I!/ 1/ F.SIRuuENI/31NO7 IN THE O/FKR,RLCN. OODs N"141 COVNIY, CRAVIw00RRINr 10 coNSIRUOI IRA .0 IWRt".A PWNER ]/B/:OS3 INS/RMI�p015'inOR[SS fOP WO PGUIPOSCS w0 lIP[M110N,NRn / _1 / � I', %%/ / 1, // / PROJEtt llVAL• INQT R,MC / , / ,'// //'/I,i II. R\y MCBRIOE MASON COUNTY ,,//,/, / / / MT TOPOGRAPHIC MAPPING III / l ,p Wx coast« SV-1 /'///'/' ' r to I/ / / L/ „ 4i 1"'15551���7llll PROr"SIDIYI LAM SURKYM I I l I % / II PRI 2320.OTTWN PO SW.tR 100 C:IENT NwCI f,PPRO[EIS ''p.l IA.s"A• N.NATO,,WA 9GI7 30M.eBe.19Ap RIMEAH[.CBIIgC N i L ili IOIL — #5: Looking down the Natural Drainage Channel from the Top. The#4 Rocked Slope is in upper left. Just below the Rocked Slope is the Path created to remove a massive amount of discarded Tree trunks, stumps, and branches and to access the remaining Slopes that require the erosion control Fractured Rock Mat. The Old-Road is shown at lower right of Photo. a-•M+.---z{;-e - - _ y,-?,��+e, � _ -ems^,_>r - - ,�j� �;,,.,.y. _ af _ #6: This is the bottom/end of the Natural Ravine that conveys the total runoff from the Subject Property [ Marked "Bank Top" on Section A-A]. Runoff flow drops from here down the Steeper Slope on its way to the Shoreline. Note that there are no visible signs of Erosion of this Natural Channel or the surface down the Steeper Slope, meaning that there is little runoff from the Subject Property. 5