The URL can be used to link to this page

Home My WebLink AboutGOE2025-00005 BLD2025-00112 - BLD Engineering / Geo-tech Reports - 1/29/2025 G6�)O?N15 v000� PLANNINr., RECEIVED JAN 2 9 2025 MASON COUNTY 1�611M,. Alder Street COMMUNITY SERVICES Geological Assessment N.eA✓.a.vim'M^9.i.w.u'ntnti.Ni'�tk.Can+wnr,Y!bi[!t 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 Cokmty Resource Ordinance. If an item is found not applicable,the report should explain the basis for the conclusion. Note:Unless specifically documented,this report does not provide compliance to the international Residential Code Sections R403.1 7 for foundations on or adjacent to slopes.Section R403-1_8 for expansive soils or section 1808.7.1 of the International Building Code Section for Foundations on or adjacent to slopes. Applicant/Owner Doutor Jirn Parker parcel# 12220-58-00012 ' Site Address 210 Allynview Drive Allyn,Washington i (t) 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) 6-8 (2) (a)A discussion of the ground water conditions at the site, Located on page(s) 8 (b) A discussion of the estimated depth to water, Located on page(s) 8 (c) A discussion of the quantity of surface seepage, Located on page(s) 8 (d) A discussion of the upslope geomorphology, Located on page(s) 8 (e) A discussion of location of upland waterbodies and wetlands. Located on pages) 8 (3) The approximate depth to hard or dense competent soil,e.g.glacial till or outwash sand. Located on page(s) 8 (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) 8 (5) A diswssiuii of the hislury ur landslide activity in the vi0i)ity,as available In the referenced maps and records. Located on oage(s) 0 ...........___._.._._......... (b) 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) 9 (7) A recommendation by the preparer whether a Geotechnicol Report should be required to further evaluate site conditions and the proposed development of the subject property. Rev.February 2018 Located on page(s) 9 (8) If the presence of a hazard is determined within 300 feet of the proposed development,then the following are delineated on a geologic mapl site map: (a) the area of the proposed development, Located on Map(s) 9(N/A) (b) the boundaries of the landslide hazard area(top,troth sides,and toe). Located on Map(s) 9(N/A) (c) the assoclateo butters(top,born sides,and toe), Located on Map(s) 9(N/A) (d) building or other setbacks(top,both sides,and toe). Located on Map(s) 9(NIA) (9) 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 Map(s) Figure 2 pages 9& 17 1, Curtis D Cushman hereby certify under penalty of perjury that I am a civil engineer licensed in the State of Washington with specialized knowledge of geotechnicallgeological engineering or a geologist ut engineering yeu"ist licensed ns it c State ur Wasliinyiuu will,special knowledge or ifie lucdl conditions.I also certify that the Geological Assessment,dated .tune 11, 2024 and entitled Geologic Assessment 210 Allynview Drive Allyn,Washington meets all the requirements of the Mason County Resource Ordinance,Geologically Hazardous Areas 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. (-p i 29 Curtis Dean CUShrn (Signature and Stamp) Page 2 of 2 Disclaimer.Mason County does not certify the quality of the work done in this Geological Assessment. GEOLOGICAL ASSESSMENT 210 ALLYNVIEW DRIVE ALLYN, WASHINGTON PREPARED FOR DR. JIM PARKER BY ALL AMERICAN GEOTECHNICAL INC. OLYMPIA, WASHINGTON JUNE 11, 2024 ALL AMERICAN GEOTECHNICAL INC. CONTACT INFORMATION PREPARER INFOR_04ATION GTL PROJECT NUMBER: AAG24-042 CONTACT: CURTIS D.CUSHMAN ADDRESS: 8947 BinToNWOOD LANE NE OLYMPIA,WASHINGTON 98516 TELEPHONE: (360)491-5155 CELI✓TEXT (360)481-6677 EN U1L ADDRESS: CIJRTLS.CIISHMA,'YCiR COMCAST.NET CLIENT INFORMATION CLIENT: DR.Jim PARKER CLIENT ADDRESS: P.O.BOX 576 kAI'NAKAKAI,RI 96748 CLiF-N-r TELEPHONE (206)375-0297 CLIENT EMAIL JIMLPARKER1952C¢,GMAIL.COM BILLING ADDRESS: DR.Jim PARKER P.O.BOX 576 KAUNAKAKAI,HI%748 SITE ADDRESS: 210 ALLVNVIEW DRIVE ALLYN,WASHINGTON PARCEL: 12220-..58-00012 GPS LOCATION: 47.386 -123.834 8947 Buttonwood Lane NE Olympia,WA 98516 2 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. SCOPE OF UNDERSTANDING DR.Jim PARKER P.O.Box 576 KAUNAKAKAI,WA 96748 JUKE 11,2024 RE: GEOLOGIC ASSESSMENT 210 ALLYNvtEW DRtvE ALLYN,WASHt.NGTON PARCEL#12220-58-000I2 47.386-123.834 Dear Dr.Parker: All American Geotechnical,Inc(AAG)was contacted in March of 2024 by Dr.Jim Parker(client)to do an assessment for the above parcel. As per client request,we have conducted a geological assessment for this parcel_ The results of this investigation are to he found in the following assessment. We are sending a copy of the assessment along with the checklist to the client. An assessment is being prepared as there is no steep slope on or within 300 feet of the proposed building site on the client parcel,exceeding 40%and calling for a geotechnical report. The slope on parcel and nearby does not meet or exceed 30%. Thus,a geologic assessment has been prepared. We appreciate this opportunity to be of service to you and we look forward to working to help complete this project safely and in compliance with the regulations and standards of Mason County. 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. Was Rcspectfully Submitted, hrrs J ALL AmERiCAN GEOTECHNICAL 2439 "�d G Curtis D Cushman Curtis Dean Cushrnan Senior Engineering Geologist 8947 Buttonwood Lane NE Olympia,WA 98516 3 Phone 0:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. TABLE OF CONTENTS CONTACTINFORMATION..................................................................................................................................._2 SCOPEOF UNDERSTANDING..................._..............................._....._.........................................................................._..3 TABLEOF CONTENTS..........._....................._.............._..................._.....................................................................................4 PURPOSEAND LOCATION..................................._...........................................................................................................5 SITECONDITIONS..............................................».............._......._...................................................................................._—.5 GeologicConditions(1)..................................................•----....................................................................................6 SiteSoils...............................................................-.......................------_.................................._...............................7 Ground Water Conditions(2a)..................................................................... .......8 Depth To Water(2b)...................................................................................................... ..... ..............8 ....... ................ Quantityof Seepage(2c).........................................................................................................................................8 UpslopeGeomorphology(2d)............................................ ..................................................................................a Upland Water Bodies and Wetlands(2e).................................................................................................................8 Depth to Competent Soil(3)................................................................................................. .....8 .............................. PastSlope Instability(4)..........................................................................................................................................8 Historyof Landslide Activity(5)............................................................................................................................9 Potentialfor Landslide Activity(6)..............................................................—........................................................9 Geotechnical Report Recommendation(7)......................_.................................._..................................................9 Landslide Hazard determination(8)(a-d)................................................................................................................9 SiteMap(9).............................................................................................................................................................9 CONCLUSIONS........................................................................................................................................................__I I Report Limitations and Guidelines for Use...........................................................................................................12 Contractors are Responsible for Site Safety on their own Construction Projects..................................................12 Please read These Provisions Closely....................................................................................................................1.2 APPENDIX................................................................................_................................................................................._13 LiDARImagery....................................................................................................................................................14 WellLog—191 Blackwell Street.........................................................................................................................15 Figure1:Vicinity Map..........................................................................................................................................16 Figure 2: Geotechnical Site Plan.................................................................................................. ...17 ..................... Figure 3:Erosion and Sediment Control Details...................................................................................................18 8947 Buttonwood Lane NE Olympia,WA 98516 4 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. PURPOSE AND LOCATION This assessment summarizes the results of our geotechnical consulting services for the above noted property(see Site Map below). There is a plan to develop the property with a single-family dwelling. The development is shown on Figure 2 in the Appendix. The site is located on Allyn View Drive which is accessed from E WA-3 via E Allynview Drive. The parcel is 0.50 acres in size(from the Mason County Assessor).The building site on Figure 2 is from the Mason County GIS and information from the client. The parcel is an irregular pentagon with a curved face following the end of the Allyn View Drive cul-de- sac and a somewhat elongated acute tip to the northeast. The southern property line runs east-west and the eastern property line runs north-south. The highest elevation of the parcel is nearly 215 feet at its western tip at the cul-de-sac,and drops to just over 170 feet in elevation at its southeastern corner. The residence is at the 200-foot contour on the slope which descends to the east-southeast. Our understanding of the project is based on information from the client. The development will require grading and removal of timber and other vegetation. Driveways will be developed to the house and a separate parking area. Water and sewage are community sourced. Erosion control needs to be addressed to prevent site degradation and sediment transport. 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. This is as defined in Mason County Ordinance 8.52.140 Geologically ha;ardour areas(A)Classification. This assessment follows from .58 2.140(E)Category d. This assessment also follows the protocol of the Mason County Submittal Checklist Geologic Assessment. SITE CONDITIONS The parcel is located in an area of moderate to intense urban density of single-family residences associated with a nearby golf course and rapid residential development below the client parcel to the east. The visit was visited on March 26,2024 by Curtis D Cushman L.G.,L.E.G of AAG. 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. The parcel has extensive vegetation of opportunistic shrubs and trees,many of the latter juvenile. Clearing will be required. This may be done in keeping with Erosion Control and Vegetative Management recommendations,below. 8947 Buttonwood Lane NE Olympia,WA 98516 5 Phone 4:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMEWAN GEOTECHNICAL INC. The topography of the residential building site shows that it is open to the east. Natural drainage is to the east. Contours from the Mason County GIS are included on the site plan Figure 2. The residence and access are also shown. No evidence of deep-seated slope instability was observed onsite. The juvenile fir trees seen near the site are straight and vertical. The slope is under 30%across the parcel. GEOLOGIC CONDITIONS(1) The site material is composed of Vashon Stade till(from the Washington Geologic Information Portal): Geologic Unit Symbol:Qgt Geologic Unit Age:Pleistocene Geologic Unit Name:Vashon Stade till Publication Source:WGS Publication Number:OFR 2009-7 Quadrangle Name:Belfair Unit Description: Unsorted, unstratifted(but locally banded)mix of clay,silt,sand,and gravel; typically supported by a sandy matrix;mostly gray but locally ranging to tan,light brown,or orange; typically unweathered,•lodgment till compact,with well-developed facies resembling concrete,but near the surface commonly hackiy and(or)looser and covered by 1 to 6 ft of loose ablation till;deposited directly by glacial ice and commonly includes clasts or clumps plucked from underlying units.Clasts are commonly,striated and faceted with angular or rounded edges... Age:Pleistocene Lithology:continental glacial till Age-Lithology:Pleistocene continental glacial till A gravelly sand unit is seen everywhere on the client parcel,in general exposures,and notably immediately below the parcel where earthmoving has exposed the column. The material is suitable for development of a residence and,when penetrated,is good for drainage by infiltration. Likely SP—Poorly graded gravelly sand(ASTM classification). 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 oftfason County, Washington by Palmer,Magsino,Bilderback,Poelstra,Folger,and Niggemann(September 2004)maps the site area as Site Class C. Site class C is very dense soil or soft rock(NEHRP classifications). 8947 Buttonwood Lane NE Olympia,WA 98516 6 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHN[CAL INC. SiTF.SOILS The soil at the residential site is as follows from the USDA Web Soil Survey: Ac—Alderwood gravelly sandy loam,15 to 30 percent slopes Map Unit Setting • national map unit iymbol:2t627 • Elevation:0 to 1,000 feet • .Mean annual precipitation:25 to 60 inches • Mean annual air temperature:46 to 52 degrees F • Frost free period: 160 to 240 days • Farmland classification:Farmland of statewide importance Map Unit Composition • Alderwood and similar soils:85 percent • Minor components: 15 percent • Estimates are based on obse»ations,descriptions,and transacts of the mapunit. Description of Alderwood. Setting • Landform:Hills,ridges • Landform position(two-dimensional):Backslope • Landform position(three-dimensional):Nose slope,side slope,talf • Dawn-slope shape:Convex,linear • Across-slope shape.Convex • Parent material:Glacial drift and/or glacial outwaslr over dense glaciomarine deposits Typical profile • A-0 to 7 inches:gravelly sandy loam • Bwl-7 to 21 inches:very gravelly sandy loam • Bw2-21 to 30 inches:very gravelly sandy loam • Bg-30 to 35 inches;very gravelly sandy loam • 2Cd1-35 to 43 inches:very gravelly sandy loam • 2Cd2-43 to 59 inches:very gravelly sandy loam Properties and qualities • Slope: 15 to 30 percent • Depth to restrictive feature:20 to 39 inches to densic material • Drainage class:Moderately well drained • Capacity of the most limiting laver to transmit water(Ksat):Very low to moderately low(0.00 to 0.06 in/hr) • Depth to water table:About 18 to 37 inches • Frequency offlooding.None • Frequency of ponding:None • Available water supply,0 to 60 inches:Very low(about 2.7 inches) 8947 Buttonwood Lane NE Olympia,WA 98516 7 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMEWAN GEOTECHNICAL INC. This well describes what is seen on site. There is a slope somewhat less than 20 percent at the northwestern part of the parcel,new the eu-de-sac. The sand seen would be best designated as SP—Poorly graded sand with gravel.Gravel is a common component. 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 an site. DEPTH TO WATER(28) There are no nearby wells. The closest in at E 171 Blackwell.Street approximately 500 feet to the northeast and 40 feet lower in elevation than the center of the client parcel. The well log(See in the Appendix) shows a very mixed column of sedimentary elastics and nothing described as"wet"until-144 feet below collar. Phreatic water is unlikely at the proposed residential building site. QUANTITY OF SEEPAGE(2C) Groundwater seepage was not observed at the parcel. Wetland vegetation was not observed. UPSLOPE GEOMORPHOLOGY(2D) The client parcel is on the eastern flank of a ridge near its top,part of the ridge-and-groove topography characteristic of glacial scouring. The LiDAR Imagery in the Appendix shows these features. There is a continuation of the moderate rise to the ridge crest at 270-feet in elevation at approximately 580 feet to the east. This poses no hazard to development. UPLAND WATER BODIES AND WETLANDS(2E) There are none. DEPTH TO COMPETENT SOIL(3) The material is suitable for construction.The material compacts well and glacial deposits are near-surface. PAST SLOPE INSTABILITY(4) No indication of past instability was discerned at the parcel. There was no nearby indication of slope instability 8947 Buttonwood Lane NE Olympia,WA 98516 8 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMEWAN GEOTECHNICAL INC. HISTORY OF LANDSLIDE ACTIVITY(5) There are no mapped landslides or other mass-wasting deposits locally. There are a handful along Sherwood Creek and one on E Grapeview loop,both to the south. These are over'l4 of a mile from the client parcel. Across Case Inlet there is a larger landslide. None of these mass-wasting events relate to the client parcel. There was no evidence on-site of incipient failures and there were no cracks,soft spots or partial detachments seen. POTENTIAL FOR LANDSLIDE ACTIVITY(6) There are no LHAs associated with this parcel. Landslide potential is extremely unlikely on any local scale. Landslide activity should not be a factor in the development and the development should not create any landslide hazard. The DNR Landslide Hazard Zone shows landslides following the Belfair quadrangle geologic map which is the source of the G1S landslide mappings. The DOE Landslide Hazard designation(from the Coastal Zone Atlas)is"Stable." The DNR 2007 Hazard Zone and the DNR 2009 Landform are both"Low." GEOTECIINICAL REPORT RECOMMENDATION(7) No geotechnical report will be needed for these parcels. LANDSLIDE HAZARD DETERMINATION(S)(A-D) The only landslide hazard area is nearby as described above. There are no other associated buffers or setbacks found within 300 feet of the parcel. SITE MAP(9) The site map is on Figure 2 at the end of this report. LANDSLIDE I[AZARD DETERMINATION The following notes are general and may not be applicable in part to this property. All ground surfaces, pavements and sidewalks should be sloped away from the proposed residence and any associated structures. Surface water runoff should be controlled by a system of curbs,berms,drainage swales,and/or catch basins and directed onto splash blocks at least 5 feet from the footings,then dispersed overland flow onto lawn or plantings. We recommend that conventional roof drains be installed. Footing drains shall be installed for the proposed structure. The roof drain should not be connected to the footing drain. For footing drains,the drain invert should be below the bottom of the footing. Drainage may also be done by capturing the drain water then directing it by tightline to a dispersion facility at an adequate and approved location,such as a natural drainage or infiltration trench. This technique is feasible. Drainage should be such that there is no flow onto or over the steep slopes to the south. 8947 Buttonwood Lane NE Olympia,WA 98516 9 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. PLACEMENT OF COMPACTED FILLS AND FOOTINGS RECOMMENDATIONS FOR SITE PREPARATION There is little geotechnical site preparation to be noted. There is no 50-foot vegetation buffer. Removal of juvenile and opportunistic trees will be required for this parcel. All deleterious material will then be removed and sub-soils reached for the footings for the construction of slab and/or footings. Any material that is excavated may be stockpiled and later used for erosion control and/or landscaping. Surfrcial material unsuitable for these tasks should be removed from the project site. No foundation elements shall be constructed on"untested"fill material. If demonstrated to be acceptable,the sand/gravel sedimentary material on site may be suitable for re-usc as structural fill. Where placement of fill material is required,the exposed subgrade areas should be compacted to a firm and unyielding surface prior to placement of any fill. Over-excavation in any building area should be backfilled with structural fill, compacted to the density requirements described in the "Structural Fill" section of this report. RECOMMENDATIONS FOR STRUCTURAL FILL All fill material should be placed as structural fill. In general, the structural fill should be placed in horizontal lifts of 8 inches to allow adequate and uniform compaction of each lift. Fill should be compacted to at least 95 percent of MDD(maximum dry density as determined in accordance with ASTM D-1557)to grade. The final appropriate lift thickness will depend on the fill characteristics and compaction equipment used. Material placed for structural fill should be free of debris,organic matter,trash,and cobbles greater than 6 inches in diameter. The moisture content of the fill material should be adjusted as necessary for proper compaction. Onsite soils may be considered for use as structural fill only if industry standards are satisfied. Fill material requirements are found on page 9-26 to 9-30 of the WSDOT Standard Specifications 2010. In general,a native soil (sand, silt, and gravel)encountered on a site must have less than 10 percent fines(material passing the US No.200 sieve)to be suitable for use as structural fill. Footing design for this material will be by the Engineer of Record. BUFFERS There are no geotechnical buffers to be observed for this residence. Slopes are such that erosion should be considered as a factor but,with proper control,not a limiting factor. 8947 Buttonwood Lane NE Olympia,WA 98516 10 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. CLEARING AND GRADINC.PLAN The site is undeveloped. Clearing will be for some trees and lower-story vegetation. Clearing may be done by commonly approved standards. Grading will be required as needed for residence and access. All job site safety issues and precautions are the responsibility of the contractor providing services and/or work. EROSION CONTROL.PLAN It is our opinion that the potential erosion hazard of the site is not a limiting factor for the proposed developments. The slope at the site is moderate but a dangerous discharge of water is unlikely. Simple erosion control methods will reduce or eliminate any potential erosion risk. Trees and understory growth on steeper slopes should not be disturbed. However, removal is possible, understanding that the less vegetation present of a slope,runoff will more easily cause erosion. Revegetation as needed should occur immediately following construction. With adequate vegetation,the erosion risk is lessened. No hazard trees appear to be present but may be removed following all standards and safety regulations. The possibility of down-slope contamination is unlikely if proper control methods are employed. A silt fence shall be installed as shown on Figures 2 and 3 and other control methods,such as swales and baled straw are practical. No re-contouring of the site will occur. Surface drainage should be directed away from all slope faces. Straw,hay,or jute matting shall be used to cover the exposed soils until permanent vegetation is established. All slopes should be seeded as soon as practical to facilitate the development of a vegetative cover,or otherwise protected. Surface water should be captured and directed off-parcel. A revegetation plan should not be required. When residential plantings or any plantings on the periphery of the residential area and the slopes are planned, native species should be considered as the primary vegetation in areas away from lawn and ornamental plantings. Shallow rooted species, such as grass, should be planted closer than 10 feet from underground drainages. Densely rooted evergreen shrubs are preferable than tree species on slopes greater than 15%gradient. Tall trees may become unstable in wet soils under high wind conditions.In general,the steep sides of the bluff should be left in a natural condition unless erosion or sloughing eventually pose a hazard to the residence. CONCLUSIONS The building site is acceptable for development based on the requirements of Mason County.There is no evidence of soil erosion or deposition onsite to suggest that there will be high erosion on-site. Proposed activities and site conditions for development do not warrant a more comprehensive Geotechnical Report. We recommend no further action is needed unless areas of concern are unearthed during any future 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. Denuded areas will require proper 8947 Buttonwood Lane NE Olympia,WA 98516 11 Phone#:(360)491-5155 Cell#:(360)481-6677 AAC24-042 ALL AMERICAN GEOTECHNICAL INC. revegetation. The owner and builder must assure that silt and other debris during construction do not enter into the local watersheds. Silt fences or bcrms may be needed.See Figure 3 for general erosion notes and for a silt fence. 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 Dr. Jim Parker and his authorized agents for the residential parcel 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 any contractor's procedures, methods, schedule or management of any 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. 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 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMEWAN GEOTECHNICAL INC. APPENDIX LiDAR Imagery Well Log—191 Blackwell Street Figure 1. Vicinity Map Figure 2.Site Plan Figure 3.Erosion and Sediment Control Details 8947 Buttonwood Lane NE Olympia,WA 98516 13 Phone#:(360)491-5155 Cell##:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. UDARln ko ty a f$ to s� y �R .Pop 0(20 � 8947 Buttunwcpd Ume NE Olympia,WA 98316 14 Phnne#:(360)491-5155 Cell#:(360)481.6677 t ti:21-iP1� ALL AMERICAN GEOTECHNICAL INC. WELL I,OG-191 BLACKWELL STREET _� WATER WELL REPORT I i moeptir eiYr��r.es Ec.Igy.Yr+wi•..«,s'w•r•,.w CURRENT li k1 CLR�'�2 "cam OfYN'tRT!(O.�•��'� (K(Cr l JU 1&""(-7 146,F.Oa;>Nd!IA T4*Na HAR01 f �'(Dicommisake ORIGIVAL INSMlL/TION W.RiIN Pmert do FYJAWT W"A. NdtYto!iHe+ItAhurbeY __. ____ PWVCA)O..r Nam IidfUYCAR6Y raorostoutm .-u..:K p 0.a oa * WtIl So=Ad*m 171 RLAt KVI ELL TTRL"ET 7 1T_ertwraat �{ 1� f,AItYA! MAS(N�f a1 CJ#rr sxa !�R«c.tw:rN WfR O Q('wq OsA—i n tI— 'L7 u+.l..-( sR°".�'...,,. L•rt LowaM SilK bit IN S.e a T..I. R a .earl C'!C'UOA G �� _..T�. .�,..,•.w. a {3T crewTsi ft'Twxa on,uu �� L�� i.x MinrStc '. A+grt.a:4.s t»:re t..»sw_•A�i.«_t o�t. Ls+ng Lk!g Long MiniStt _.- a Tax Parcel ka.(Rryuirtd) d>t � tsRdKMw:x wt te:....crt>tix..Sai•�c durrus.wdwiwmr W++Mrs.adMLa1M � �s¢r.•;,m «� r(r#w M>.K+_rb..—�•�'�f.. � _t .�.rsetre..ew..�.n...r•e+rara.r.k.e.«sr a.rsdwM Lam.A a(rfrNw.f 4P at]MATERIAL tf.+Stt)T7CU >�Fo � - N SJC IY SAINO.<AtAVtA. • a..s w.r. _:..iYT •«:v� t 51Li Br RP U C&A SILTY JAYI),BrXdc CAVp, d m..lhu p.t.t .»` v ,. m cmur yr dbTuv rox SILTY"''a q GRAY M"IMUA15AN9.(;RAvEL t14 PrA fixt.. .. —_ �1 S..rr•Li Yw �. Tc.Yi•pa' t MN.i•..tfw fOA B).li 1'(KITE ; C.RA151. , ciff R rMwt MnlrsaaM.r..ti.ro^ [',t s« '"Ns (M('N to(A 1M.SAM IV 14t T'R'�""'" r+.M�U;•aa tIFIMt YA TO(AR{l-L.YtAv5L,3At•'ii,WAl'Y! ISt 197 Akhlda�Me�muclC r)RAYXAt<pY ..AY wT'tIT T 157 IN ►u�.rtasu-eas�.w „,.„_ WAi STICKY CLAY.MY.3T f ➢IiP 2w /rtTtttietti:.t.M.rr e.1w.ao.rea6ns.r«ae.nfr et 1i. !(MOiY"Oi?i SAUD,*AiFA I �M N Sunc.Ms11:.�..J twi..gK..r 15r. 6',,,,f:t16 1(tTM MAkoW%$AW).WAt 2A4 2st An..ar vK'«u.T�..+trT4�r rA 0111 TA`E6l�Y" +1 ,' Zi'A - w wrt 200 (*AV IWt T(7MUW-DN6 SAM tSt6 13 WILL Mft 3w�.••.w.+.•we w+rt..«r s.4+ak.� GfCA4iOFALGlIAY'E.L.M`ET 2�3 3• 'Auaouw r.u•i: Y« GRAY CLAY 3TTTT,I3RY :.. Y.d• Vr�.'.rwo k A.-d•.++a'lce In RLBM}N WRrI'�%AfiS aY.sa t+1.'^.:.w.�+!ex.Jw•*.e.. f+. 1.AY Yaa iarsn«« t s. ,d•- "� .Fx CLAY '!M 1 74 ARw+h'ara.•.mr.mu•e.....+vvr.«.HJ•.':r n:.w..rr/M+nI GRAYCIAY !Kt )IS grrm.rr...ae 1A.LIlTd SA.tiG,(AA n)I2 OT.w —L-A T.w Ya.rtaM Tra aq..t•.rl WATT'R GRAY SILTY(I.AY,itW r:RAY[j, .Im 1)i (� .....� to IARUF ME M'm ARUN\ Arrla•—�r�c--- t ) SArR,N',t Tf.N )tri M.t•Twt rF(r a.�Ar..... It t.Mrdt..Juy In 4 SAd9 XM.4.(,acA A..wAti:Jt g ktl adG. At Jkv 0 Tarppie..Nd•.v,,,_— Y'..e,ba.»xI#�nrt..farl.rik' o Ys w- ISant Dalt C.rM, +hard r'.tw M = •= ItRLL CpTS1RYCTKIMCER/iKAiKM4lcwuecx4A++('ar+en7 +hrim sir ttMreunenoldixw Y.aad to p(�kplCt..�i'i N'a.! .an�au+.cam Y.lydsn0.+Wmd.sn.ad:ae�ktlRlatiuu M1MMytbed ah.ae se au.c.:.ficv iro�..k3�aM belxf. ylmllo.L6ea�*.ES ;s., ARCAIXAiNpUNCINC'. 1a.:rarlE.4 artrTrana aas—t e!�Z A.1ac�m K)NTX l M (r.aa a ranee I axaK b ...� 7q SII[I TVS -. WA ve(t.l It i KANhb lY+tlds I.—#+a M+IW)S+prrwc /+l�f�'�� w�' ,�w�..�'.,..^.Kt'AfHAwtia t�(✓16i� RCrafaa-Sar�Yasc+riP,•»••+a.��c..�a..da�,�.vr�.,...d�. �r a,.,..+iraan`�i '. tnrr..r.wk...yltw.rr..r[zttferlW��TM 1Frzwsn+a. rrnne»,w•p��s,•�ams.•..ot;a"-as15>+f 53�:.1%glult Ji,tc Dc(131T7mcig of Ecology 8947 Buttonwood Lane NE Olympia,WA 98516 15 Phone#:(360)491-5155 Cell#:(360)481-6677 AAG24-042 ALL AMERICAN GEOTECHNICAL INC. FCGuRF:1.VICINITY MAP f 410 Jr 61" } F . rf FE 9 TnJ A k 't .� r• Y� v ;i 1 i � t" r x` J d t f .✓' t .v. �`.` � �,� w N 11YS6tl0'�V :1�`-1`.!0'W Own:..'UR N i Cfse70tn."4.Gfi:�aaea C+✓k¢fcstff ssrsa!€? 8947 Buttonwood Lane NE Olympia,WA 98516 16 Phone#:(360)49 t-5155 Cell#:(360)481-6677 AAG24-042