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Home My WebLink AboutGEO2018-00013 for BLD2018-00041 - GEO Geological Review - 7/14/2022 �Eb Zo 18 - coo I"2j 2 6 ) 000�l I RECEIVED FEB 0 7 2018 615 W. Alder Street GEOLOGICAL ASSESSMENT 81 E BAY HEIGHTS DRIVE SHELTON.) WASHINGTON PREPARED FOR ALEXES & GABRIEL BORNSTEIN BY ALL AMERICAN GEOTECHNICAL INC. OLYMPIA, WASHINGTON FEBRUARY 1 , 2 018 ALL AMERICAN GEOTECHNICAL INC. CONTACT INFORMATION PREPARER INFORMATION GTL PROJECT NUMBER: AAG18-006 CONTACT: CURTIS D.CUSHMAN ADDRESS: 8947 BUTTONWOOD LANE NE OLYMPIA,WASHINGTON 98516 TELEPHONE: (360)491-5155 EMAIL ADDRESS: CURTIS.CUSHMAN@COMCAST.NET CLIENT INFORMATION CLIENT: ALEXES&GABRIEL BORNSTEIN CLIENT CONTACT: SAME TELEPHONE: (253)320-0826, (702)353-1554 BILLING ADDRESS: P.O.BOX 333 GRAPEVIEW,WASHINGTON 98546 SITE ADDRESS: 81 E BAY HEIGHTS DRIVE SHELTON,WASHINGTON 98584 PARCEL: 12229-77-90023 GPS LOCATION: N470 22'0.00" W1220 49' 57.40" 8947 Buttonwood Lane NE Olympia, WA 98516 2 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. SCOPE OF UNDERSTANDING ALEXES&GABRIEL BORNSTEIN P.O.Box 333 GRAPEVIEW,WASHINGTON 98546 FEBRUARY 1,2018 RE: GEOLOGIC ASSESSMENT 81 E.BAY HEIGHTS ROAD SHELTON,WASHINGTON 98584 PARCEL#12229-77-90023 N470 22' 0.00". W 1220 49'57.40" Dear Alexes and Gabriel Bornstein: As per your request, we have conducted a geological assessment for the above-mentioned parcel. The results of this investigation are to be found in the following assessment. We have provided two copies for your review and distribution. We appreciate this opportunity to be of service to you and we look forward to working with you in the future. If you have any questions concerning the above items,the procedures used, or if we can be of any further assistance please call us at the phone numbers listed below. Respectfully Submitted, ALL AMERICAN GEOTECHNICAL Wash,, o Z�z LAG rgineenrg Geobgist Curtis D Cushman 2439 ce�ss Ge° Senior Engineering Geologist Curtis Dean Cushman 8947 Buttonwood Lane NE Olympia, WA 98516 3 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. TABLE OF CONTENTS CONTACTINFORMATION.......................................................................................................................................................2 SCOPEOF UNDERSTANDING.................................................................................................................................................3 TABLEOF CONTENTS..............................................................................................................................................................4 PURPOSEAND LOCATION...............................................................................................................................................................5 SITECONDITIONS...........................................................................................................................................................................6 GEOLOGICCONDITIONS(1).....................................................................................................................................6 GEOSEISMICSETTING..............................................................................................................................................7 SITESOILS...............................................................................................................................................................8 GROUNDWATER CONDITIONS(2a).........................................................................................................................9 DEPTHTO WATER(2b)...........................................................................................................................................9 QUANTITYOF SEEPAGE(2C)....................................................................................................................................9 UPSLOPEGEOMORPHOLOGY(2d)...........................................................................................................................9 UPLAND WATER BODIES AND WETLANDS(2e)......................................................................................................9 DEPTHTO COMPETENT SOIL(3)..............................................................................................................................9 PASTSLOPE INSTABILITY(4)................................................................................................................................ 10 HISTORY OF LANDSLIDE ACTIVITY(5)................................................................................................................. 10 POTENTIAL FOR LANDSLIDE ACTIVITY(6)............................................................................................................ 10 GEOTECHNICAL REPORT RECOMMENDATION(7)................................................................................................. 10 LANDSLIDE HAZARD DETERMINATION(8)(a-d)................................................................................................... 10 SITEMAP(9)......................................................................................................................................................... 10 CONCLUSIONSAND OPINIONS......................................................................................................................................................11 REPORT LIMITATIONS AND GUIDELINES FOR USE................................................................................................ 1 I CONTRACTORS ARE RESPONSIBLE FOR SITE SAFETY ON THEIR OWN CONSTRUCTION PROJECTS........................ 11 PLEASE READ THESE PROVISIONS CLOSELY......................................................................................................... 12 APPENDIX....................................................................................................................................................................................13 MASONCOUNTY NOTICE...................................................................................................................................... 14 FAULTMAP........................................................................................................................................................... 14 NEARBYWELL LOG.............................................................................................................................................. 15 IBCDESIGN SUMMARY......................................................................................................................................... 16 AASHTODESIGN SUMMARY............................................................................................................................... 17 FIGURE1.VICINITY MAP...................................................................................................................................... 18 FIGURE 2:MCNABB PROPERTY GENERAL PLAN.................................................................................................. 19 FIGURE 3.SEDIMENT AND EROSION CONTROL PLAN...........................................................................................20 8947 Buttonwood Lane NE Olympia, WA 98516 4 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. PURPOSE AND LOCATION This report summarizes the results of our geotechnical consulting services for the proposed residence on the above-noted property (see Site Map below). The residence will be constructed on a 1.1 acre lot. Clearing and grading has occurred on the site, and utilities including water, electric, communications and fiber optic have been brought to the site. Additionally a septic system has been installed. The site is located directly off Bay Heights Drive, which is off of Gills Cove Drive from Grapeview Loop. The 1.1- acre parcel is roughly a four-sided parcel with a long southern border that extends the west parcel boundary to a point. The proposed building site is the northwest portion of the property as indicated on the site map. Access to the residence will be via the driveway to the east of the proposed residence, the client's driveway is at about the 80-foot contour. The site is approximately 15 miles northeast of Shelton, Washington. The assessment has been commissioned by owners Alexes and Gabriel Bornstein (clients). Our understanding of the project is based on our discussions with the clients. We understand that the site is to be developed with a new home. No major grading is expected for this development. The septic drain field is located to the southeast of the building envelope and since water is community, a well buffer is not included on the drawing (See Figure 2). The approximate layout of the site is shown on the Site Plan, Figure 2. The site was visited by Curtis D Cushman L.E.G. And Blaise Jelinek E.I.T. of All American Geotechnical (AAG)on January 25, 2018. Clients were not on site at the time of the visit. _7T Proposed } 4J i•F , ♦ ♦ �♦ 1 ! i y No slope stability analysis was prepared for this property as no slopes on or near the property within 300'of the development met the criteria of a 40% slope with vertical relief of ten or more feet or any of the other criteria requiring a geotechnical report (17.01.100 Landslide Hazard A.l.a. to f.) This was verified at the time of the AAG site visit. Because of the overall slope and the lack of a landslide hazard area, Mason County requires that a geological assessment be prepared in accordance with the Critical Areas Ordinance. 8947 Buttonwood Lane NE Olympia, WA 98516 5 AAG18-006 Phone#: (360)491-5155 Cell#: (360)481-6677 ALL AMERICAN GEOTECHNICAL INC. The Mason County Resource Ordinance Geologically Hazardous Areas (12-27-2006; revised June 16, 2009) contains the following: 17.01.100 Landslide Hazard Areas E. Special Reports 1. Applicability Category d. Development proposed within 300 feet of areas with slopes between 15 percent (8.5 degrees) and 40 percent (21.8 degrees) will require a Geological Assessment, and may further require a Geotechnical Report upon the findings of the assessment. SITE CONDITIONS The proposed building site is located in an area of sparse residential development in Mason County, Washington. The visit by AAG was a site investigation by Curtis D Cushman L.E.G and Blaise Jelinek E.I.T. The purpose of a site investigation is to physically observe the property and adjacent properties to identify any recognized geologic conditions. Visual observations were documented. Site-specific features were identified, vegetation noted, and local geology noted. No evidence of deep-seated slope instability was observed onsite. The trees seen on site are straight and vertical Mason County in a memo from Ron Buckhold (page 12) expressed concern regarding the fault that is mapped to the south of the parcel. GEOLOGIC CONDITIONS(1) The slope material is composed of glacial material. The following is the most recent mapping. The Geologic Map of the Vaughn 7.5-minute Quadrangle, Mason County Washington by Logan, T., et al., 2007; Washington Department of Geology and Earth Resources Map GM-65, has mapped the geology as Vashon Till (Qgt). The map legend reads: Vashon till—Unstratified to moderately stratified, compact, unsorted mixture of clay, silt, sand, and gravel deposited directly by glacial ice; gray to tan; nearly everywhere in sharp contact with underlying units; does not drain well as permeability and porosity are low; sand and finer grains in matrix are very angular;pebble- to boulder-size clasts are commonly striated and faceted, having angular and (or) rounded edges; boulders are generally disseminated and relatively rare; may contain interbeds of sand and gravel. The surface of this unit is characterized by streamlined drumlins, striations, and flutes that are generally hundreds to thousands of feet long. Angular to subrounded glacial erratic boulders, consisting mostly of plutonic or metamorphic rock, are common but disseminated on the surface of this unit. Unit may be capped by a few feet of unsorted and stained ablation sand and gravel or by unit Qgos. Vashon till locally crosscuts older sediments, forming angular unconformities. Drag folding and horizontal shearing may 8947 Buttonwood Lane NE Olympia, WA 98516 6 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. occur at the base of the till or internally between layers of till, especially in thick deposits. Unit Qgt ranges in thickness from 0 to at least 50 ft. This unit will support the proposed structure. The Liquefaction Susceptibility Map of Mason County, Washington by Palmer, Magsino, Poelstra, Bilderback, Folger, and Niggemann (September 2004) maps the site area as having a very low liquefaction potential. The Site Class Map of Mason County, Washington by Palmer, Magsino, Bilderback, Poelstra, Folger, and Niggemann (September 2004) maps the site area as site class C. Site class C is a very dense soil or soft rock. GEOSEISMIC SETTING The site is just north of a mapped branch of the Tacoma Fault commonly known as the Catfish Lake Fault or the Catfish Lake Scarp. He site is on the upthrown side of a reverse fault dipping to the north. The displacement is minor, but sufficient to dam north-flowing streams into a few small lakes,notably the eponymous Catfish Lake. The displacements that are visible enough to be mapped are likely relief features of the east-west Tacoma Fault. The Vaughn Quadrangle map indicates a major event, sufficient to dam Catfish Lake but of unknown intensity, taking place approximately 1200 years b.p. According to the Seismic Zone Map of the United States contained in the 2006 International Building Code (IBC), the project site is located where the maximum spectral response acceleration is 40 percent of gravity(g). The Geoseismic section has been included because of the proximity to the mapped fault. We recommend following seismic factors for design purposes. • Site Class: C (Soft Rock) • Spectral response acceleration, short period(SMs): 1.405g(Fa= 1.05) • Spectral response acceleration, 1-second period(SMi): 0.735g(F,= 1.55) • Peak Ground Acceleration(PGA) 0.425g 8947 Buttonwood Lane NE Olympia, WA 98516 7 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. SITE SOILS The soil on the site is Sinclair shotty loam (So). This classification is from the USDA Web Soil Survey and is described as follows. Sinclair shotty loam, 5 to 15 percent slopes Map Unit Setting National map unit symbol: 2hn7 Elevation: 0 to 300 feet Mean annual precipitation: 25 to 50 inches Mean annual air temperature: 50 degrees F Frost-free period: 200 days Farmland classification: Farmland of statewide importance Map Unit Composition Sinclair and similar soils: 100 percent Estimates are based on observations, descriptions, and transects of the map unit. Description of Sinclair Setting Landform: Till plains Typical profile H 1 - 0 to 11 inches: gravelly loam H2 - 11 to 35 inches: very gravelly loam H3 - 35 to 60 inches: gravelly sandy loam Properties and qualities Slope: 5 to 15 percent Depth to restrictive feature: 28 to 42 inches to densic material Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low(about 3.7 inches) Interpretive groups Land capability classification(irrigated): None specified Land capability classification(nonirrigated): 4s 8947 Buttonwood Lane NE Olympia, WA 98516 g Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. Hydrologic Soil Group: B Other vegetative classification: Limited Depth Soils (G002XN302WA) Hydric soil rating: No The Sinclair soil is typical of the soils derived from till plains. It is moderately well-drained, not subject to flooding and is suitable for construction although, as a general rule, the development of footings removes the soil to the underlying firm and unyielding geology. GROUND WATER CONDITIONS(2a) No evidence of active surface erosion was observed. No surface water flow was observed onsite. No ponding of water was observed throughout the site. No seeps or springs were observed on site. DEPTH TO WATER(2b) A nearby well struck a sand and gravel layer at the -40-foot depth and reported the static water at -42- feet. This is likely similar to the profile on-site. QUANTITY OF SEEPAGE(2c) Groundwater seepage was not observed at the proposed building location or throughout the site. Wetland vegetation was not observed at the proposed building location or throughout the site. UPSLOPE GEOMORPHOLOGY(2d) The upslope above the building site rises less than 40 %. This rises eventually to a mapped height of a knoll 128 feet located 1000 feet to the northwest. This does not threaten the building site. UPLAND WATER BODIES AND WETLANDS(2e) There are none in the inventory, in the available literature, and none seen above the site. The site topography and the topography of the immediate area(drumlin in shape) shield the site from water bodies that could impact the site. DEPTH TO COMPETENT SOIL(3) This is likely very shallow, as seen in the cut. The soil overall is firm as it is related to shallow subcrop of basalt. 8947 Buttonwood Lane NE Olympia, WA 98516 9 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. PAST SLOPE INSTABILITY(4) No indication of past y, A` / instability was discerned '' at the proposed building location. There was no nearby indication of slope instability HISTORY OF LANDSLIDE ACTIVITY(5) - r There are no landslides ` near the site. No s landslides or mass .� • , - � 1 wasting is mapped anywhere nearby r There is no indication of any landslide forms or debris on the Interactive Geologic Map of Washington, LiDAR image, or on and around the site. POTENTIAL FOR LANDSLIDE ACTIVITY(6) There will be no development on any LHA or associated buffer or setback. Landslide activity should not be a factor in the development and the development should not create any landslide hazard. GEOTECHNICAL REPORT RECOMMENDATION(7) No geotechnical report will be needed for this project. LANDSLIDE HAZARD DETERMINATION(8)(a-d) No Landslide hazards or associated buffers or setbacks were found present within the 300 feet. SITE MAP(9) The site map is on Figure 2 at the end of this report. 8947 Buttonwood Lane NE Olympia, WA 98516 10 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 ALL AMERICAN GEOTECHNICAL INC. CONCLUSIONS AND OPINIONS The Tacoma Fault as seen in the Catfish Lake Scarp is not a major hazard to this single-family residence if it is designed in accordance with the ground accelerations and in accordance with the site classification as noted above. The clients should be advised of the potential hazard of a seismic event and plan accordingly as should all residents and governmental agencies in the area. The site is acceptable for the proposed development based on the requirements of Mason County. The seismic hazard is minimal but present as it is in all of Western Washington. There is no evidence of soil erosion or deposition onsite to suggest that the site should be included in the Erosion Hazard Area designation. Proposed activities and site conditions for the development do not warrant a more comprehensive Geotechnical Report. We recommend no further action is needed unless areas of concern are unearthed during construction. To minimize erosion and sedimentation, we recommend that vegetation be cultivated in areas around the building location following construction. Grass should be used within 10 feet of footings and over any utilities. Otherwise, native vegetation is preferred. The owner and builder must assure that silt and other debris during construction do not enter into the local watershed. Silt fences or berms may be needed. See Figure 3 for general erosion notes and for a silt fence. The tightline notes do not apply unless required by the engineer of record. If there are any changes in the loads, grades, locations, configurations or types of facilities to be constructed, the conclusions and recommendations presented in this report may not be fully applicable. If such changes are made, we should be given the opportunity to review our recommendations and provide written modifications or verifications, as appropriate. Changes to the Mason County Code may require our firm to revisit the subject site prior to development, if six months has elapsed,to ensure the conditions are in agreement with our original report. REPORT LIMITATIONS AND GUIDELINES FOR USE We have prepared this report for the exclusive use of Alexes and Gabriel Bornstein and their authorized agents for the proposed building location in Mason County, Washington. This report does not specify setbacks for: line-of-sight setbacks, FWHCA setbacks, eagle tree setbacks, wetland setbacks, or property line setbacks. Within the limitations of scope, schedule and budget, our services have been executed in accordance with generally accepted practices in the field of geotechnical engineering in this area at the time this report was prepared. No warranty or other conditions, expressed or implied, should be understood. CONTRACTORS ARE RESPONSIBLE FOR SITE SAFETY ON THEIR OWN CONSTRUCTION PROJECTS Our geotechnical recommendations are not intended to direct the contractor's procedures, methods, schedule or management of the work site. The contractor is solely responsible for job site safety and for managing construction operations to minimize risks to onsite personnel and to adjacent properties. 8947 Buttonwood Lane NE Olympia, WA 98516 11 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. PLEASE READ THESE PROVISIONS CLOSELY Some clients, design professionals, and contractors may not recognize that geoscience practices (geotechnical engineering or geology) are far less exact than other engineering and natural science disciplines. This lack of understanding can create unrealistic expectations that could lead to disappointments, claims and disputes. All American Geotechnical includes these explanatory "limitations"provisions in our reports to help reduce such risks. The equipment, techniques and personnel used to perform an environmental study differ significantly from those used to perform a geotechnical or geologic study and vice versa. For that reason, geotechnical engineering or geologic reporting does not usually relate any environmental findings, conclusions or recommendations; e.g., about the likelihood of encountering underground storage tanks or regulated contaminants. Similarly, environmental reports are not used to address geotechnical or geologic concerns regarding a specific project. 8947 Buttonwood Lane NE Olympia, WA 98516 12 AAG18-006 Phone#: (360)491-5155 Cell#: (360)481-6677 ALL AMERICAN GEOTECHNICAL INC. APPENDIX Mason County Note regarding Fault from Ron Buckholt Mason County GIS Fault Map Near by Well Log IBC Design Summary ASSHTO Design Summary Figure 1. Vicinity Map Figure 2. Site Plan Figure 3. Erosion and Sediment Control Plan 8947 Buttonwood Lane NE Olympia, WA 98516 13 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. MASON COUNTY NOTICE' I am Ron Buckholt, with the Mason County Planning Department, reviewing building permit BLD2018- 00041, for a proposed residence. Unfortunately, the subject building permit has been placed on HOLD for the following reason(s): 1. According to the Mason County GIS database, the subject parcel is located adjacent to both a moderate landslide hazard area and a pair of fault lines (seismic hazard area). The County's adopted Resource Ordinance requires sites within or adjacent to landslide and seismic hazard areas to be analyzed by a licensed geotechnical engineer in the form of a written geotechnical assessment. Said assessment shall be accompanied with a geotechnical assessment submittal checklist in order for staff to verify that the assessment addresses all of the necessary items. A geotechnical assessment checklist that is absent during the submittal process will cause delays in the review process. Please provide the geotechnical assessment and checklist at your convenience in order to allow for the permit review to proceed. Thank you in advance. FAULT MAd C Q ■ >_:-_ "itr: 'geo ogyportal.dnrn%a.gov Y} ® O 8 . O iW 72 Z i 4 b VO G r W Z toum 8947 Buttonwood Lane NE Olympia, WA 98516 14 Phone#: (360)491-5155 Cell #: (360)481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. NEARBY WELL LOGI Fee Oog.oal with WATER WELL REPORT Notice of�rfen: W-111844_T Departntart of Ecology Second Copy-Owners Copy STATE OF WASHIr10TON UNIQUE WELL I Do _AEH 939 TMrd Copy-Drillers Copy Water Right Permit Nc. __----.._ (1) OWN": Name North Ray Ri eghtc W-S. *5 Address 1IL929 (;OWriCh Dr_ f Gig 14nr1nr,-WA-%329 (2) LOCATION OF WELL:Courtly MA4nn NE_1/4 _114 S"___ —T-79 MR. 1 LI WM (2s) STREET ADDRESS OF WELL:(or nearest address) 101 F. R RLnnzi L- $d AI 1 t WA 98524 TAX PARCEL NO.: 12229-31-00020 (3) PROPOSED USE: X Domestic 11 Industrial O Municipal (10) WELL LOG or DECOMMISSNNaNG PROCEDURE DESCRIPTION C Inipation ;Test Well O Oahor Formation:Describe by color,character.Size of materiel and structure,and C DsWaftr die Will and nature of the material in each stratum penetrated,with at(east (4) TYPE OF WORK: Owners number of well(if more then one) one entry far each change of information indicate all water encountered. ,,I Now Well Method MATERIAL FROM TO Deepened 77 Dug ❑ Bored Faccndhioned IX Cable ❑Ddvem Decommissior M Rotary ❑ Jelled (S) DIMENSIONS: Diameter of well 6 inches Drilled 124 feet.Depth of completed weli 194 ft. (6) CONSTRUCTION DETAILS Coaling InstaWd: Welded Fi Diam.from_.0 ft.to 1 1 Q h. Liner installed _ Diam.from ft.to ft. Threaded Diam.from ft.t0 h. Pwforatlona: LlVas g<No Sand & ravel with water24 Type of pedorator used SIZE of perforations —in.by in. perforations from ft.to—ft. Screws; GEY" C No M K-Psc Location 117 Manufacturers Name cook Type dal Mo No. Diam _Slot Size_�--Irom 119 h,to 1?la h. rl Dom. Skit Size tram ft.to ft. GrainaMlaer pecked: Z1 Yes 3 No ❑Size of graveysand Material p1aC.d from ft.to ft. DeVartMe" Surloce*"I: ZVolt [:No To what depth') 1$ ft Material used in seal 13ptnTTi tp Did any strata oonta n unusable water? :]Yes S No Type of waMr:h Depth Of strata Method of sealing sran off (7) PUMP: Manulaicturers Name japuz71 Type: sub, H.P. 2 (6) WATER LEVELS: Land-surface elevation above mean sea level tt. Static level _- 42 It.below top of well Data Work Started 1 n�1o/99 Completed 1115199_—. Artesian pressure Ibe per square inch Daft Artesian water is controlled by (cp.Naha,etc.) WELL CONSTRUCTIONCERTIFICATION: (9) WELL TESTS: Drawdovm is amount wear level is lowered below 61014 level I constructed andlor accept relations"for constTUCtion of ma wall,and its Was a pump taxi made') MYas ❑No d yes,by wham? compliance with all Washington well construction standards, Matansls used 52 drowdown after his.veld. galJmin.with and Me ireporttrueration reported above are true to my best knowledge and belief. � tt. 1, Yfield galhnin_with 52 tt.drowdown after !a rare. Type or Print Name Fib N01 Ann Litwhse Nc, 1 RR6 Yield gal./min.with ft.drowdown*her his. (Lioonsed Dnlle•/Engraver) Recovery data(tune taken as Zero when pump turned off)(water lewl mokesured from Treviso Name License No. well top to water level) -Time Water Level Tana Water I&N Tune Watts Level Drilling Compa(h Dw _0 IQ-min, 90 (Signiscil License No�_ 1_min- MIn• 15 min, �g (Licensed DnlledEngineer) �- �- 5—.min.- �� 42' Address Belfair, WA 9852E Date of test _ Bailer rest _ gdJmin.w th h.tlrawdown dw Me. Comnetors Airtest galJmm.with ft drawdown afar lire. Registration No. DAVISDI11flQA_...._Data `. �1 Artesian flan' _ d.p.m. DeTe (USE ADDITIONAL SHEETS IF NECESSARY) Temperature o1 water Was a chemical analysts made? )UYb ONO Ecology is or Ecual Opportunity and Affirmative Action empoyer.For special ECY O50-t-20(tt/Y6) accommodation needs.Contact frie Water Resources Program at(360)407- 66W.The TOD number is(3W)407.6006. 8947 Buttonwood Lane NE Olympia, WA 98516 15 Phone#: (360)491-5155 Cell #: (360) 481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. IBC DESIGN SUMMARYI ELM Design Maps Summary Report User-Specified Input Report Title Bornstein Thu February 1,2018 21:26:10 UTC Building Code Reference Document 2012/2015 International Building Code (which utilizes USGS hazard data available in 2008) Site Coordinates 47.36667°N, 122.83260W Site Soil Classification Site Class C - "Very Dense Soil and Soft Rock" Risk Category I/II/III VNWW vil r y �'r� r �rsN % . �+ g Haiti ,rr ,AIM 16, rr �r 6 USGS-Provided Output Ss = 1.405 g Sins = 1.405 g SDs = 0.937 g St = 0.565 g SM1 = 0.735 g So, = 0.490 g For information on how the SS and S1 values above have been calculated from probabilistic(risk-targeted) and deterministic ground motions in the direction of maximum horizontal response,please return to the application and rA select the"2009 NEHRP"building code reference document. MCER Response Spectrum Design Response Spectrum 1 1. ;fu ej r. _. •1•: .. ,9. 11 1.20 1 40 1.;Q 1.eU zoo PenoO.T(sec) Psno4 T(sec) Although this information is a product of the U.S.Geological Survey,we provide no warranty,expressed or"Ned,as to the accuracy of the data contained therein.This tool is not a substitute for technical subject-matter knowledge. i5y,4 tsuttonwoou Lane INc, urympia, W A yap 10 16 Phone#: (360)491-5155 Cell #: (360)481-6677 AAG 18-006 ALL AMERICAN GEOTECHNICAL INC. AASHTO DESIGN SUMMARYI Zt= Design Maps Summary Report User-Specified Input Report Title Bornstein Thu February 1, 2018 21:32:02 UTC Building Code Reference Document 2009 AASHTO Guide Specifications for LRFD Seismic Bridge Design (which utilizes USGS hazard data available in 2002) Site Coordinates 47.366670N, 122.8326°W Site Soil Classification Site Class C — "Very Dense Soil and Soft Rock" Risk Category I/II/III 3Jr I V1 n w 6{ WISH ,trig Hart Wnm 16 AV . }r >r�collar�walrar� AI,I�tJw r USGS-Provided Output PGA = 0.425 g As = 0.425 g Design Response Spectrum Ss = 0.939 g SD, = 0.962 g S, = 0.337 g So, = 0.493 g a9J _g aao �j a 90 ab a.]7 alp a4a am; am tap l.m tic t.w I.AA a0o a«n«t r(sec) Although this information is a product of the U.S.Geological Survey,we provide no warranty,expressed or implied,as to the accuracy of the data contained therein.This tool is not a substitute for technical subject-matter knowledge. 8947 Buttonwood Lane NE Olympia, WA 98516 17 Phone#: (360)491-5155 Cell #: (360)481-6677 AAG18-006 j IIPP" - € fill , � . ALL AMERICAN GEOTECHNICAL INC. FIGURE 2: MCNABB PROPERTY GENERAL PLAN I 8947 Buttonwood Lane NE Olympia, WA 98516 19 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 NOTES vie is This is not a survey. This map is a presentation of Bay information from county, state, and federal agencies, ; client provided information, and onsite observations; for discussion purposes of the report with which this ; Proposed qfi map is included. ;' Building ' e This site is serviced by a community water supply. ; Envelope Silt F mce As / Need d Sample Site Soil CD �• Sinclair shotty loam d �" 5 to 15 percent slopes ;' N Site Geology z � SCALE 1'-40' Qgt --Vashon Till 0 10 20 30 40 / °i as i�✓ ' / ' 321' _z GeobW j 2439 / oe�sed 8 Curtis Dean Cushman All American Geotechnical, Inc. Project Drawn By: Site Plan Permit Number: Parcel Number: 12229-77-90023 Figure 8947 Buttonwood Lane NE Number: BWJ Proposed Home Olympia,Washington 98516 AAG18-006 1/31/18 Grapeview,WA Applicant Name: Alexes&Gabriel Bornstein Site Address: 81 E Bay Heights Drive 2 ALL AMERICAN GEOTECHNICAL INC. FIGURE 3.SEDIMENT AND EROSION CONTROL PLAN I I I I I I I I I i I 1 I I 1 I I I 8947 Buttonwood Lane NE Olympia, WA 98516 20 Phone#: (360)491-5155 Cell#: (360)481-6677 AAG18-006 FILTER FABRIC MATERIAL 60"WIDE ROLLS USE STAPLES OR WIRE RING TO ATTACH FABRIC TO WIRE 2"X2'X14 GA FABRIC OR 1 2,-0., s-o" /�� UND SURFACE ///,�� 1/2 INCH MINIMUM DIAMETER OD RAP)CLAMPEDSECURE Y TO PIP (STRAP) 2'-6" CORRUGATED TIGHTLINE 4 INCH 6'MAX MINIMUM,6 INCH SUGGESTED 2"X4"WOOD POSTS,STANDARD OR BURY BOTTOM!` BETTER OR EQUAL ALTERNATE: MATERIAL IN 81, STEEL FENCE POSTS FILTER FABRIC 6" 2"X2"X14 GAUGE WIRE FABRIC OR EQUIVALENT 2'-0" GROUND SURFACE 5-C PROVIDE 3/4"-1 1/2"WASHED GRAVEL BACKFILL IN TRENCH AND ON BOTH SIDES OF FILTER FENCE FABRIC ON THE SURFACE 8"MIN \ 2"X4"WOOD POSTS 44 ALT:STEEL FENCE PS FILTER FABRIC FENCE NOTES: 1. FILTER FABRIC SHALL 6E PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF JOINTS. WHEN JOINTS ARE NECESSARY,FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST WITH A MINIMUM 6-INCH OVERLAP AND SECURELY FASTENED AT BOTH ENDS TO THE POST, 2. POSTS SHALL BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND(MINIMUM OF 30INCHES). 3. A TRENCH SHALL BE EXCAVATED APPROXIMATELY 8INCHES WIDE AND 12 INCHES DEEP ALONG THE LINE OF POSTS AND UPSLOPE FROM THE BARRIER. 4. WHEN STANDARD STRENGTH FILTER FABRIC IS USED,A WIRE MESH ,;' ,:,. ,.. _. ,�.;»_' SUPPORT FENCE SHALL BE FASTENED SECURELY TO THE UPSLOPE SIDE �,,.�.;ix��:';:Y:.�.;;r..�,, " :"�`�:`��-K••' .. -..{�:�,;� , ''ems'.✓;`+f'c=�i::!a:.+�:s,e:; -..::; OF THE POSTS USING HEAVY-DUN WIRE STAPLES AT LEAST 1 INCH �Via:.•:; '1,',�':M -• ti -"x'-•""'' LONG,TIE WIRES OR HOG RINGS. THE WIRE SHALL EXTEND INTO THE �� ="='tii-=�> 1�:•� ^`w="`�c.?'.S•' TRENCH A MINIMUM OF 4INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND SURFACE. GRASS-LINED SWALE SHOULD BE A 5. THE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED MINIMUM ONE FOOT WIDE AT THE TO THE FENCE AND 20INCHES OF FABRIC SHALL BE EXTENDED BOTTOM AND ONE FOOT DEEP WITH INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 A MAXIMUM SLOPE OF 5 PERCENT. INCHES ABOVE THE ORIGINAL GROUND SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO THE EXISTING TREES. 6. WHEN EXTRA-STRENGTH FILTER FABRIC AND CLOSER POST SPACING IS USED.THE WIRE MESH SUPPORT FENCE MAP BE ELIMINATED.IN SUCH A CASE:THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS WITH ALL OTHER PROVISIONS OR ABOVE NOTES APPLYING. i 7. FILTER FABRIC FENCES SHALL NOT BE REMOVED BEFORE THE UPSLOPE AREA HAS BEEN PERMANENTLY STABILIZED. B. FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. All American Geotechnical, Inc. BWwn B 12229-77-90023 Figure 8947 Buttonwood Lane NE Olympia,Washington 98516 1/31/18 81 E Bay Heights Drive 3 Revisions; GEO ZW_ 606 Mason County Review Checklist For a Geological Assessment Instructions: This checklist is intended to assist Staff in the review of a Geological Assessment. The Assessment is reviewed for completeness with respect to the Resource Ordinance. If an item is found to be not applicable, the report should explain the basis for the conclusion. The Assessment is also reviewed for clarity and consistency. If the drawings, discussion, or recommendations are not understandable, they should be clarified. If they do not appear internally consistent or consistent with the application or observations on site, this needs to be corrected or explained. If resolution is not achieved with the author, staff should referthe case to the Planning Manager or Director. Applicant's Name: S eJ1 Y� Permit#: EW Zd% - o bog Parcel#'s: ill Z9_17-Roo Z,3 Date(s) of the Document(s) reviewed: 1 /9 1. A discussion of geologic conditions in the general vicinity of the proposed development, with geologic unit designation IZas d on referenced maps. OK? Comment: 2. (a) A discus!Z of the ground water conditions at the site, OK? Comment: (b) A discussion of the estimated depth to water, OK? Comment: (c) A discussi of the quantity of surface seepage, OK? Comment: (d) A discussion of the upslope geomorphology, OK? Comment: (e) A discus io of location of upland waterbodies and wetlands. OK? —Comment: 3. The approximate depth to hard or dense competent soil, e.g. glacial till or outwash sand. OK? Comment: 4. A discussion of any geomorphic expression of past slope instability (presence of hummocky ground or ground cracks, terraced topography indicative of landslide block movement, bowed or arched trees indicating downslope rol ment, etc.). OK? 7 Comment: 5. A discussion of the history of landslide activity in the vicinity, as available in the referenced maps and records. OK? _Comment: 6. An opinion on whether the proposed development is within the landslide hazard area or its associated buffer or setback and the otential for landslide activity at the site in light of the proposed development. OK? Comment: 7. A recommendation by the preparer whether a Geotechnical Report should be required to further evaluate site conditions and he proposed development of the subject property. OK? ' Comment: 8. If the presence of a hazard is determined within 300 feet of the proposed development, then the following are delineated on a geologic map/site map: Pagel of 2 Form Effective June 2008 (a) the area of the proposed development, OK? Comment: (b) the boundaries of the landslide hazard area (top, both sides, and toe), OK? Comment: (c) the associated buffers (top, both sides, and toe) OK? Comment: (d) building or other setbacks (top, both sides, and toe). OK? Comment: 9. A site map drawn to scale showing the property boundaries, scale, north arrow, and the location and nature of existing and pr osed development on the site. OK?_ Comment: Are the Documents signed and stamped? By whom? License#: 2`(3 License type: FIRST REVIEW Approved ❑ Need more info. If not approved, what is the next action/recommendation for further action? Reviewed by �:5"" on L V V . Time spent in review: /fit v SECOND REVIEW/UPDATE ❑ Approved ❑ Need more info. If not approved, what is the next action/recommendation for further action? Reviewed by on . Time spent in second review: THIRD REVIEW/UPDATE ❑ Approved ❑ Need more info. If not approved, what is the next action/recommendation for further action? Reviewed by , on . Time spent in third review: Disclaimer.- Mason County does not certify the quality of the work done in this Geological Assessment Page 2 of 2 Form Effective June 2008 RECEIVED FEB 0 7 2018 Mason County Department of Community Development Submittal Checklist For a Geological Assessment Instructions: This checklist must be submitted with a Geological Assessment and completed, signed, and stamped by the licensed professional(s)who prepared the Geological Assessment 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. t. Applicant/Owner AJeYies,, G �i;�, ). `rhX 1rW',i Parcel# Q2 9-7 7 "M�3 Site Address St C- 1AW 14 4 3 Roca s' 1 I t? (1) A discussion of geologic conditions in the general vicinity of the proposed development, with geologic unit designation based on referenced maps. Located on page(s) 6 -7 (2) (a)A discussion of the ground wateLconditions at the site, Located on page(s) (b) A discussion of the estimated de th to water Located on page(s) = (c) A discussion of the quantity of surface seepage Located on page(s) L (d) A discussion of the upslope gegnorphology Located on page(s). (e) A discussion of location of uplan4waterbodies and wetlands. Located on page(s) (3) The approximate depth to hard ordense competent soil, e.g. glacial till or outwash sand. Located on page(s) �f (4) A discussion of any geomorphic expression of past slope instability(presence of hummocky ground or ground cracks, terraced topography indicative of landslide block movement, bowed or arched trees indicating downslope movement, etc.). Located on page(s) /(� (5) A discussion of the history of landslide activity in the vicinity, as available in the referenced maps and records. Located on page(s) (6) An opinion on whether the proposed development is within the landslide hazard area or its associated buffer or setback and the potential for landslide activity at the site in light of the proposed development. Located on page(s) 1( (7) A recommendation by the preparer whether a Geotechnical Report should be required to further evaluate site conditions and the proposed development of the subject property. Page 1 of 2 Form Effective June 2008 ' | � � Located onpage(s) ` i (8) If the presence ofohazard io determined within 388 feet nf the proposed development, ` then the following are delineated onm geologic map/site map: (a) the area of the proposed development, Located on Map(s) ' . . |, (b) the boundaries of the landslide hazard (top. both sides, and toe). Located on Map(s) (c) the associated buffers and toe) � ` Located on /Nop�A (d) building or other setbacks op, both Located onMop(a) /y * (0) A site map drawn to scale showing the property boundaries, scale, north arrow, and the | i location and nature of existing d proposed development on the site. . Located nnMop(a) � / hereby certify under . � penalty of perjury that I'am a civil engineer licensed in the State of Washington with specialized ! knowledge of geotechnical/geological engineering or a geologist or engineering geologist i licensed in the State of Washington with special knowledge of the iocal conditions. I also certify ! that the Geological Assessment,dated 4F4 and entitled , I/ �� requirements � Mason Coufity Re�ource Ordinance, Landslide Hazafd Section, is complete and true,that the _ assessment demonstrates conclusively that the risks posed by the landslide hazard can be mitigated through the included geotaohniuo|design recommendationn, and that all hazards are mitigated in such a manner omtu prevent harm to property and public health and aafety- (Signetueand8tannp) � ! 2439 � Disclaimer: Mason County does not certify the quality of the work done in this Geological � Assessment. ' Page 2of2 Form Effective June 2008 i � ��