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16-105970 , -- W .- Building - Single Family - City of Federal Way Permit #:16-105970-00-SF ' Community Development Dept. 33325 8th Ave S Federal Way,WA 98003 Inspection Request Line: (253)835-3050 Ph:(253)835-2607 Fax:(253)835-2609 Project Name: NORPOINT HEIGHTS LOT 10 Project Address: 2535 SW 353RD PL Parcel Number: 612500 0100 Project Description: NEW-Construction of a 2-story, 3,264 square foot single family residence with a 60 square foot covered entry and a 420 square foot attached garage,including plumbing and mechanical. *** 4 bedrooms; $350,000 estimated selling price*** Owner Applicant Contractor Lender LANDMARK HOMES INC JULIE FISONLENNAR LENNAR NORTHWEST INC OWNER IS LENDER 2715 64TH AVE NE NORTHWEST INC 33455 6TH AVE S SUITE 1-B TACOMA WA 98422 33455 6TH AVE S UNIT 1-B FEDERAL WAY WA 98003 FEDERAL WAY,WA 98003 Census Category: 101 -New Single Family House Includes: #1 #2 #3 #4 Occupancy Class: R-3 Construction Type: Type V-B Occupancy Load: Floor Area(sq.ft.) 3,744.00 Additional Permit Information New/Additional Sq.Feet-1st Floor 1645 New/Additional Sq.Feet-2nd Floor 1619 New/Additional Sq.Feet-3rd Floor 0 Occupancy#1-Area(Sq.Feet) 3744 New/Additional Sq.Feet-Basement 0 Basic Plan? No Occupancy#1-Construction Type Type V-B New/Additional Sq.Feet-Deck 0 New/Additional Sq.Feet-Garage 420 Mechanical to be Included? Yes Plumbing Work Valuation? 20000 Mechanical Work Valuation? 10000 Number of Stories 2 New/Additional Sq.Feet-Other 60 , Plumbing to be Included? Yes New/Additional Sq.Feet-Total 3744 Will Certificate of Occupancy be Issued Yes Occupancy#1-Use Residence(1 or 2 family) Comprehensive Plan Designation SF-High-Density Zoning Designation RS 7.2 Residential Total Valuation:387,601.20 } , ''• .Mechanical Fixtures N 1171/4: fr E �.........;•�2�a .,...., .,,�,,.. �z^�i.... �.z„, ..,;•i .� �....% v:.. ' �`.._ 4ig..,.... 'sem Ducting 1 Fans 5 Furnaces 1 Gas Piping 1 Gas Pipe Outlets 5 Hot Water Tanks 1 'k4� 3 mpg tjur 44y Bathtubs 3 Dishwashers 1 Laundry Washer Outlets 1.y, Lavatories 4 Showers 1 Sinks 2 Water Closets 3 Hose Bibbs 2 CONDITIONS: 1. A minimum of 4 tree units shall be planted prior to final building inspection. For questions see approved tree calculation worksheet. ,,,,fie .0111 PERMIT EXPIRES Monday,7 August,2017 .` Permit Issued on Wednesday, February 8,2017 • I hereby certify that the above information is correct and that the construction on the above described property and the occupancy and the use will be in accordance with the laws, rules and regulations of the State of Washington and the City of Federal Way. • Owner or agent: /�,/ �� / ��i ' & r Date: 02 7 — City of Federal Way Certificate of Occupancy This Certificate issued pursuant to the requirements of Section 111 of the International Building Code or Section R110 of the International Residential Code is certifying that at the time of issuance,this structure was in compliance with the various ordinances of the City regulating building construction or use.This certificate is valid ONLY when endorsed by City staff. Tenant Name: NORPOINT HEIGHTS LOT 10 Permit# 16-105970-00-SF Address: 2535 SW 353RD PL Includes: #1 #2 #3 #4 Occupancy Class: R-3 Construction Type: Type V-B Occupancy Load: 0.00 Floor Area(sq.ft.) 3,744.00 Owner Name: LANDMARK HOMES INC Owner Address: 2715 64TH AVE NE TACOMA WA 98422 Oteel4A-7 ./4/4-r 7//Esii Building Official Date The priority focus in the review and inspection made by the City prior to issuance of this Certificate was on those matters which experience has shown most severely affect the health and safety of the general public. Although the City has made as complete a review and inspection as is reasonably possible(within budgetary time and personnel limitations), the City neither guarantees nor warrants to the owner/occupant or to any other person that this Certificate evidences strict compliance with each and every ordinance or regulation of the City or the State of Washington affecting the construction or use of said structure or the land upon which it is situated. Such compliance is the responsibility of the owner and/or occupant of the premises. • ., 4 . .� THIS CARD IS TO REMAIN ON-SITE CITY OF ".°Mor Construction Inspection Record Federal Way INSPECTION REQUESTS: (253)835-3050 PERMIT#: 16 105970 00 Address: 2535 SW 353RD PL Project: LANDMARK HOMES INC FEDERAL WAY WA 98023 Scheduled inspections may be failed if this card is not on-site. DO NOT LOSE THIS CARD. Inspections are listed as close to sequential order as possible (read left to right,top to bottom). Please schedule inspections as appropriate. Work must not be covered until it is approved. Check with your inspector if you are unsure about any of the inspections or the inspection sequence. On-going inspections are logged on the back of this card. •0 SWM Precon Site Mfg(4400) 2❑ Initial Erosion Control(4365) 3❑ Footings/Setback(4110) Approved To be done PRIOR to breaking ground Approved to place concrete By iirtk j-- • _, Date .24-01//7 By Date B—S Date Z—y ._<7 , 4❑ Foundation Wall(4115) ® Drainage/Downspout(4040) ® Plumbing Groundwork(4190) , Approved to place concrete Approved to backfill Approved to cover t,':arr f..,- .a r is �By�• J Date ��•29" •. j 7 !$ Date a_7_ j.' .By PI..� Date , , , 0 Slab/Concrete Floor(4255) ® Underfloor Framing(4285) ® Floor Sheathing(4105) Approved to place concrete Approved to sheath floor Approved to install flooring By Date By 6--a y Date 3l x.)17By Date , 1 Shear Walls(4245) .Pp at Roof Sheathing(4220) E Rough Plumbing(4230) Approved to install siding Approved to install roofing Approved By - Date Bye ' S Date 3-5 (_ v ) By Date ` a3 L4 �5 Mechanical Rough-in(4165) Gas Piping(4125) Fire/Draft Stops(4095) Approved Approved to release test Approved By Date By ,•'., , Date By -14' Date .„ _ 111 Interim Erosion Control(4370) Prior to scheduling a Framing inspection; 97 Framing(4120) Approved Electrical,Plumbing&Mechanical Rough-in Approved to insulate and Fire/Draft Stop inspections must be signed- By Date off and approved. IBC 1093.4 By ,4,-.f_i Date q/q/17 Insulation(4150) 111 Gypsum Wallboard Nailing(4130) 2fl Final Erosion Control(4375) Approved to install wallboard Approved to install mud&tape Approved By 4-h, Date By Se',!1 Date By Date CI Final-Mechanical(4065) 22 Final-Plumbing(4075) CI Final-Building(4050) Approved L Approved Approved By Date 7)J(`r 7 J/7 By 4 jJ Date -7))1t)/7 By 3 ) Date 7'i s f i 7 El Rough Electrical 0 Final Electrical Right of Way Approved Approved Approved By Date By Date By Date f , • RB ENGINEERS, INC. 1312 2ND ST. KIRKLAND,WA.98033 PH: 425 8223009 FAX: 425 822 2679 CELL: 425 351 2085 EMAIL: rbe1992a,gmail.com WEB WWW,R_B_ENGINEERS.COM JOB:LENNAR PLAN 3264A FIELD CORRECTION REP DATE:5/2/ 17 < Ni 90 SYS/i 1 PAGE: 1 OF STRUCTURAL CLARIFICATION /FIELD CORRECTION REPLY FOR LENNAR PLAN 3264 A NOR POINT HEIGHTS LOT 10 FEDERAL WAY, WASHINGTON BASIS FOR DESIGN: CODE: INTERNATIONAL BUILDING CODE(2015EDITION) INDEX TO COMPUTATIONS: GENERAL GI REVISED DETAILS SKI-SKZ NOTES: 1. RB ENGINEERS,INC.IS NOT RESPONSIBLE FOR THE EXISTING CONDITIONS, SITE,SOILS ARCH.,VENTING,SITE&WEATHER PROOFING .. 2. INFORMATION NOT NOTED PER CITY/COUNTY O OIM) rq APPROVED PLANS. � F .yCcp 411,4 o 'PP��1) FG/414Rip �� SS�ONA ENG\ 'EXPIRES Feb 20 11 • LEI\hNPrIL. too IL QiR4 • • z CL II Lai' Ic, SY7 o N x 1 ~ Z _ n zs �0= � g LL W,cras2N W W agagEbl d Z e tV Mj Q o W _ mo053 o Na V NN 3.11V a0 a p _= NU? 2F Ory W ! 1 1(1 II 0 Y x J Li w 6 wX N� Q a w II a � t� O I I O = N �I z x _GO I I vv. 0. a !s# � T Tit T z Z V x < 3 N �0 z� o $ 2 V 1 C 1r, o _ N J a. N N a • HJ 0N 3264 or DEC 2 0 2016 PERMIT APPLICATION .� CITY OF Federal Way CITY OF FCEDDSRAL WAY PERMIT NUMBER ) (C/ _ ) D 5 c17 0 _ S 1 TARGET DATE l 1 b / "— SITE ADDRESS SUITE/UNIT# 2535 353rd Place Federal Way,WA PROJECT VALUATION ZONING ASSESSOR'S TAX/PARCEL I $ 175,000.00 / 2 5 2 1 0 3 - 9 0 4 8 pe TYPE OF PERMIT BUILDING 0 PLUMBING 0 MECHANICAL ❑DEMOLITION ❑ ENGINEERING 0 FIRE PREVENTION NAME OF PROJECT Norpoint Heights Lot 10 Building a new SFR 3264 SF. PROJECT DESCRIPTION Detailed description of work to be included on this permit only NAME PRIMARY PHONE Lennar Northwest Inc. 253-590-2213 PROPERTY OWNER MAILING ADDRESS E-MAIL 33455 6th Ave S., Unit 1-B julie.fison@lennar.com CITY STATE ZIP Federal Way WA 98003 NAME Lennar Northwest Inc. PHONE 253-590-2213 MAILING ADDRESS - E-MAIL CONTRACTOR 33455 6th Ave S., Unit 1-.B julie.fison@lennar.com CI TYFederal Way STATE ZIP WA 98003 FAX WA STATE CONTRACTOR'S LICENSE I EXPIRATION DATE FEDERAL WAY BUSINESS LICENSE I CC LENNNANI893QG 11/ 7 /2017 NAME PRIMARY PHONE Julie Fison 253-590-2213 APPLICANT '"�`I`3AggE th Ave S., Unit 1-B EMAIL julie.fison@lennar.com CITY STATE ZIP FAX Federal Way WA 98003 NAME PRIMARY PHONE PROJECT CONTACT Garrett Gibson 253-590-2209 (The individual to receive and MAILING ADDRESS E-MAIL respond to all correspondence 33455 6th Ave S., Unit 1-B garrett.gibson@lennar.com concerning this application) cITtederal Way STATE 219WA 8003 FAX NAME PROJECT FINANCING ® OWNER-FINANCED When value is$5,000 or more MAILING ADDRESS,CITY,STATE,ZIP PHONE (RCW 19.27.095) I certify under penalty of perjury that I am the property owner or authorized agent of the property owner.I certify that to the best of my knowledge, the information submitted in support of this permit application is true and correct.I certify that I will comply with all applicable City of Federal Way regulations pertaining to the work authorized by the issuance of a permit.I understand that the issuance of this permit does not remove the owner's responsibility for compliance with local, state, or federal laws regulating construction or environmental laws, I further agree to hold harmless the City of Federal Way as to any claim(including costs,expenses,and attorneys'fees incurred in the investigation and defense of such claim),which may be made by any person,including the undersigned,and filed against the city, but only where such claim arises out of the reliance of the city, including its officers and employees, upon the accuracy of the information supplied to the,,oity as a part his application. SIGNATURE: r ` DATE i C'.ZD/ r✓ PRINT NAME: Julio,_Pison Bulletin#100—February 22,2016 . Page 1 of 2 k:\Handouts\Permit Application a • • MECHANICAL PERMIT �V,ALU�^(E'�Or OFM("^E�/CHANICAL WORK 4 Indicate how many of each type of fixture to be installed or relocated as part of this project.Do not include existing fixtures to remain. AIR HANDLING UNITS 5 FANS 5 GAS PIPE OUTLETS OTHER(Describe) AIR CONDITIONER 2 FIREPLACE INSERTS HOODS (Commercial) BOILERS 1 FURNACES 1 HOT WATERta G„ COMPRESSORS GAS LOG SETS ( )Tankless REFRIGERATION SYST 1 DUCTING 5 GAS PIPING WOODSTOVES PLUMBING PERMIT VALUE OF PLUMBING WORK Indicate how many of each type of fixture to be installed or relocated as part of this project.Do not include existing fixtures to remain. 2 BATHTUBS(or7ub/Shower Combo) 5 LAVS(Hand Sinks) 3 TOILETS WATER PIPING 1 DISHWASHERS RAINWATER SYSTEMS URINALS OTHER(Describe) DRAINS 1 SHOWERS VACUUM BREAKERS DRINKING FOUNTAINS 1 SINKS(Kitchen/Utility) WATER HEATERS(Electric) 2 HOSE BIBBS SUMPS 1 WASHING MACHINES I i TOTAL FIXTURES GENERAL INFORMATION CRITICAL AREAS ON PROPERTY? WATER PURVEYOR SEWER PURVEYOR VALUE OF EXISTING IMPROVEMENTS N/A Lakehaven Utility District $ N/A EXISTING/PREVIOUS USE LOT SIZE ria Square Feet) EXISTING FIRE SPRINKLER SYSTEM? PROPOSED FIRE SUPPRESSION SYSTEM? Vacant 7,200 ❑Yes EN No ❑Yes Ix No RESIDENTIAL - NEW OR ADDITION AREA DESCRIPTION(in square feet) EXISTING PROPOSED TOTAL FOR OFFICE USE BASEMENT -- — -- -- ------- --- ------- --- FIRST FLOOR(or Mobile Home) 0 1645 1645 S,co1Ip FLOOR 0 1`619 J6/91.,:, COVERED ENTRY 0 60 60 '— DECK - ----------------- ---------- GARAGE C`' CARPORT ❑ 0 420 420 --- — — — O Area Totals EXISTING PROPOSED TOTAL3744 3744 ESTIMATED SELLING PRICE$ 350,000.00 '#OF BEDROOMS 4 COMMERCIAL—NEW/ADDITION AREA DESCRIPTION Area in Construction #of Square Feet Occupancy Group(s) Additional Information Type Stories NEW'BUILDING :'' ADDITION COMMERCIAL—REMODEL/TENANT IMPROVEMENTS AREA DESCRIPTION Area in Construction #of Square Feet Occupancy Group(s) Additional Information Type Stories TOTAL BUILDING - -- - TENANT AREA ONLY PROJECT AREA ONLY ; t - Bulletin#100—February 22,2016 Page 2 of 2 k:\Handouts\Permit Application I • • RESUBMITTED JAN 2 0 2017 ',Solutions OF FEDERAL WAY ', N W`r1171 RE . B M I xi UNITY DEVELOPMENT s January 18, 2017 Earth Solutions NW LLC rim ES-4908.02 DE I 017 - OF FEDERAL" Y • Ceotechnical Engineering Lennar NW COMMUNITY DE • Construction Monitoring DEVELOPMENT 33455 - 6th Avenue South, Unit 1-B • Environmental Sciences Federal Way, Washington 98074 Attention: Mr. Garrett Gibson Subject: Geotechnical Addendum Letter- Lot 10 Norpoint Heights 2535 Southwest 353rd Place Federal Way, Washington Reference: J. Eric Schuster, et al. Geologic Map of the Tacoma Quadrangle, Washington, November 2015 GeoResources, LLC, Geotechnical Engineering Services Report, Job: LandmarkHm.Norpoint.RG, dated January 16, 2008 United States Department of Agriculture Natural Resources Conservation Service Online Web Soil Survey (WSS) resource Barghausen Consulting Engineers Inc. Norpoint Heights Grading Exhibit, dated November 21, 2016 Dear Mr. Gibson: In accordance with your request, Earth Solutions NW, LLC (ESNW) has prepared this geotechnical addendum letter for Lot 10 of the Norpoint Heights residential development. Pertinent geotechnical recommendations are provided within this letter. Introduction In preparation of our geotechnical addendum letter, ESNW reviewed the previously completed geotechnical engineering study as well as performed a site visit to observe current conditions. Based on our review, the majority of the geotechnical information provided within the completed study is still applicable to current development plans. Additional pertinent geotechnical information is also included within this letter. We anticipate continuing development of the subject building lot (Lot 10) will mostly be limited to minor grading activities and building pad preparation. Based on our field observations, current conditions within the subject lot should prove suitable for the continuation of lot grading activities. ii4° fte CZ 1805 - 136th Place N.E.,Suite 201 • Bellevue,WA 98005 • (425)449-4704 • FAX(425)449-4711 l i Lennar NW ES-4908.02 January 18, 2017 Page 2 Project Description The Norpoint Heights residential development is located at the intersection between Norpoint Way Northeast and Southwest 353rd Place in Federal Way, Washington and consists of a single tax parcel (King County Parcel No. 252103-9048) covering approximately 3.05 acres. The site has been partially developed with utility installation, stormwater management facilities and the onsite roadway (Southwest 353rd Place). Lot 10 is located at the northeast portion of the site. We understand that continuing development within Lot 10 will include cuts and fills on the order of one to two feet to reach design grade. Based on our experience with similar projects and our understanding of the proposed project, we anticipate that the new residential structure will be two to three stories in height and constructed utilizing relatively lightly-loaded wood framing supported on a conventional foundation. We estimate perimeter foundation loads will be on the order of 1 to 2 kips per lineal foot and slab-on-grade loading of 150 pound per square foot (psf). If the above design assumptions are incorrect or change, ESNW should be contacted to review the recommendations in this letter. ESNW should review final designs to confirm that our geotechnical recommendations have been incorporated into the plans. Surface Conditions At the time of ESNW's site visit (December 2016), grading activities in the form of utility installation, pond construction and grading and paving of Southwest 353rd Place had already occurred. Based on our knowledge of the site and observations collected, grading within the individual building site has been limited to minor cuts and fill placement (anticipated as temporary placement of material cut from the grading of southwest 353rd street). At the time of our site visit, final grading of Lot 10 had not been completed. Subsurface Conditions ESNW was onsite to view current site conditions as well as observe, log, and sample three shallow subsurface explorations, excavated using a hand auger boring (HA) tool, along the proposed building pads for the purpose of assessing soil and groundwater conditions. HA-1 will be used to characterize representative subsurface conditions for the subject Lot 10. The hand auger boring was advanced to a maximum exploration depth of three-and-one-half feet below existing grades. The following is a general description of the soil and groundwater conditions encountered at the hand auger location. Please refer to the attached hand auger boring logs for a more detailed description of the subsurface conditions. Earth Solutions NW,LLC r I Lennar NW ES-4908.02 January 18, 2017 Page 3 Topsoil was primarily encountered underlying shallow fill material at HA-1 and was observed to be approximately 18 inches thick. The topsoil was characterized by a dark brown color, the presence of fine organic material, and small root intrusions. Fill material was encountered at HA-1 and primarily identified as brown silty sand with gravel in a medium dense to dense and moist condition. 'In general, the fill material was observed extending one-and-one-half feet below existing grades. We anticipate that fill within the area can be attributed to road grading activities, with current grades in the area not accurately reflecting final design grades. Native soil conditions encountered were preliminarily identified as silty sand with trace to significant gravels. The native silty sand was observed extending to the termini of the subsurface exploration location and was generally encountered in a medium dense to dense and moist condition. Geologic Setting The referenced geologic map indicates the subject site is underlain by glacial till deposits (Qvt), locally referred to as Vashon till or hardpan. The referenced Web Soil Survey (WSS) resource indicates soils of the Alderwood gravelly sandy loam series (Map Unit Symbol: AgC) across the subject site. The Alderwood series formed in glacial till on ridges and hills. Soil conditions likely to be encountered during construction activities are anticipated to be as outlined within this section. Groundwater During our subsurface exploration completed on December 28, 2016, groundwater seepage was not encountered at the hand auger boring locations. However, localized discrete zones of groundwater seepage may be encountered within site excavations. It is noted groundwater seepage rates and elevations fluctuate depending on many factors, including precipitation duration and intensity, the time of year, and soil conditions. In general, groundwater flow rates are higher during the wetter, winter months. Site Preparation and Earthwork Based upon the referenced Grading Exhibit, we anticipate cuts and fills on the order of one to two feet will be necessary to bring the proposed Lot 10 building site to design grade. From a geotechnical standpoint, the native soils encountered at the hand auger boring location can be considered suitable for use as structural fill and foundation support. Soils encountered during our subsurface exploration are considered sensitive to moisture and will degrade rapidly when exposed to excessive moisture during construction disturbances. In this respect, a contingency for soil amendment or import should be included in the earthwork budget. Earth Solutions NW, LLC • I ES-4908.02 Lennar NW January 18, 2017 Page 4 Foundations Based on the result of our evaluation, new foundations for the Lot 10 residential structure may be supported on conventional foundation systems bearing on competent native soil or structural fill used to establish building lot elevations. Where loose or unsuitable soil conditions are exposed at foundation subgrade elevations, compaction of the soils to the specifications of structural fill, or overexcavation and replacement with structural fill will be necessary. Any topsoil within the building pad should be removed and the area restored (as needed) using suitable structural fill as recommended by the geotechnical engineer at the time of lot grading and construction. Based on the subsurface soil conditions observed during our field exploration, we anticipate competent native soil suitable for foundation support will be exposed ata depth of approximately three to four feet below existing grade across the majority of the subject lot. Loose material exposed at foundation subgrade elevations should be re- compacted or overexcavated and replaced with suitable structural fill. ESNW should observe the exposed foundation subgrade conditions, prior to the placement of concrete formwork, to confirm that acceptable bearing conditions have been achieved and to provide supplementary recommendations, if necessary. Provided that the structure will be supported as described above, the following parameters can be used for design of the new foundations: • Allowable soil bearing capacity 2,500 psf • Passive earth pressure 300 pcf(equivalent fluid) Coefficient of friction 0.35 A one-third increase in the allowable soil bearing capacity may be assumed for short-term wind and seismic loading conditions. With structural loading as expected, total settlement in the range of one inch and differential settlement of about one-half inch is anticipated. The majority of the settlements should occur during construction as dead loads are applied. Retaining Walls Retaining walls, if utilized, should be designed to resist earth pressures and applicable surcharge loads. The following parameters can be used for retaining wall design: • Active earth pressure (yielding condition) 35 pcf (equivalent fluid) • At-rest earth pressure (restrained condition) 55 pcf • Traffic surcharge (passenger vehicles) 70 psf (rectangular distribution) • Passive earth pressure 300 pcf (equivalent fluid) • Coefficient of friction 0.35 • Seismic surcharge 6H* * Where H equals the retained height(in feet) Earth Solutions NW,LLC • • Lennar NW ES-4908.02 January 18, 2017 Page 5 Drainage should be provided behind retaining walls such that hydrostatic pressures do not develop. If drainage is not provided, hydrostatic pressures should be included in the wall design. Retaining walls should be backfilled with free-draining material that extends along the height of the wall, and a distance of at least 18 inches behind the wall. The upper one foot of the wall backfill can consist of a less permeable soil, if desired. A perforated rigid drainage pipe should be placed along the base of the wall, and should be connected to an approved discharge location. Drainage During our subsurface exploration, groundwater was not encountered within the hand auger boring location. As such, we do not anticipate significant groundwater intrusions during site construction activities. Should groundwater be encountered, temporary measures to control groundwater and surface water runoff during construction will likely involve passive elements such as interceptor trenches and sumps, as necessary. Surface grades must be designed to direct water away from buildings, temporary/permanent slopes and walls. The grade adjacent to the structure should be sloped away from the structure to a suitable area, as practical. In our opinion, footing drains should be installed at or below the invert of structural footing elements. Preliminary Infiltration Evaluation As part of our addendum letter preparation, we preliminarily investigated the hydrologic capacity of site soils based on our shallow subsurface exploration, the previously prepared study, and anticipated site conditions. Silty sand with gravel (glacial till) was primarily encountered during our shallow subsurface exploration. In general, glacial till deposits exhibit poor infiltration characteristics and should not be considered suitable for full infiltration implementations. However; utilization of limited infiltration facilities or Low Impact Development (LID) implementations may prove feasible, with successful use heavily depending on in-situ conditions. As such, if individual lot infiltration is to be pursued, ESNW should be retained in order to further evaluate the hydrologic capacity of the site soils. Seismic Considerations The 2015 IBC recognizes ASCE for seismic site class definitions. If the project will be permitted under the 2015 IBC, in accordance with Table 20.3.1 of ASCE, Minimum Design Loads for Buildings and Other Structures, Site Class D, should be used for design. In our opinion, provided the proposed structure is supported as recommended in this letter, liquefaction susceptibility is considered very low with respect to settlement impacts. The absence of a uniformly established groundwater table and the relative density of the native soils were the primary basis for this characterization. Earth Solutions NW, LLC Lennar NW ES-4908.02 January 18, 2017 Page 6 , Additional Services ESNW should also be retained to provide earthwork observation and testing, and further consultation services during development and construction. The recommendations and conclusions provided in this geotechnical addendum letter are professional opinions consistent with the level of care and skill that is typical of other members in the profession currently practicing under similar conditions in this area. A warranty is not expressed or implied. Variations in soil and groundwater conditions observed at the hand auger boring locations may exist, and may not become evident until construction. ESNW should reevaluate the conclusion in this geotechnical addendum letter if variations are encountered. We trust this geotechnical addendum letter meets your current needs. Should you have questions regarding the content herein, or require additional information, please call. Sincerely, "„0"...11 11.j. EARTH SOLUTIONS NW, LLC , ' 1 p\ t-,) —4 * ', r J 1 r�; at, 36018-tit ' ', 5 ichaff Geoolas G.logist Stevens Raym n Std A. Coglas, P.E. Principal Attachments:Figure 1 — Hand Auger Boring Location Plan Figure 2 — Hand Auger Boring Logs Earth Solutions NW,LLC • • Hand Auger Boring Location Plan ES-4908.02 Norpoint Heights Federal Way, Washington . J0.7 JO C .:� ., qtr 89.17' 0 guy — 1/ 12 LOT 1i ` An n " LOT 10 1 '\20'mis Iwo 4351 9F 7.40"72751.1:- ;21!0 S 1 125341 It &2 __ 0A . It 1:12:1.1: 8914 NEINR _ ,,,,,I....,.._.1 _(__ PARCEL A Fa3ERA1 WAY . 9 3°W l ; I FiCAMARY MME ACJUSI T 4 —87,33' r HA-1 1 08-100581-S0-91 'r T 1 FAX PARCEE x'2521039028 1 al 915k-i 1 1 1 'g2'.' r HA-2 AN nsavAro ID arr s , LOT f2 —_ .— 'PSE Rt WA ,,124 S ' 1 k 125371 Sd mV tt 1 tr i _i .� 897: 'It t2 0551j 1'� njf. - ' r-% " ii. 4 % LOTS r O � LOT 13 STORMWATER r 0,018 W. ro 311 2i I 61 OETAL' Ell Ra4D413' ' r 1 .0 " �. :* iD79:001CA:rr:711,, 6 . . „ ` ' 1810. e7 fi, m • t4; V.l 78' C, -_ €,., h 353RD PLACE . . ,; , .c LOT ' . - S895.3'281 170. -1,„, A2547 tzOf 5: a.41 worm. y_ 50'PS 3-1 4:1 "z SST . �, � LOT 1 LOT2 1 LOT 3 I0 17... 1 18 sF L soot SE m� Nxkii 1 i��s -0 11 I2 1�j 2sas 1,283 SF "i I 'q' HMI iZtr HA-3 ?!?c'OI't 214.10' ,� x08' 15'HATER EASEIEITj 7 ram 7nlnntem11/IT 1 JOB NO. 11-90(l.05. b /© NT L- $ C NW. TEST PIT NO. 3 ' D DATE - 10 BY N65 Y 5 ELEVATION NA —iCONTRACTOR EfN �i/V_ 1 LL SHEET of 0 , , 2 j-C. SURFACE COWDIT ONS ci ..Q a= a s U 2ii E ��III j � NOTE DEPTH OF TOPSOIL&SOD N i M ..0i t ` is, c4„_.___, it* * y.- __ MUM a_ a / 11111 __ im .._ , iii 311. t„,1/4 notta„ 1...s111.4..rozil....di iftivirjel4Etkeiii.eso,____ IIII ailnill°Ml i iiii 8,1 s11111111111.1111 I III 0 111111111 Man I III 11111111 i MEI .11111 111111 1 illimai i 11111 imin 8. i 11111 1 di El Test pit terminated at S.61 feet below existing grade.€J Groundwater(table I seepage)encountered at feet during excavation.(Caving observed fat/from) to feet. Earth Solutions NWuc | E:TIEE ._ IA_1 6., _ � 1 ` ` JOB NO. .� ri4 A-a| � SURFACE CONDITIONS \ 8���^ | ' \ 4 El '2 ; I) in i .. -ai s is coylti_ 't . 66A, _Ail i sOttajztl_4. 12,5:4 04191S ,„,. r ....___ .. , , _ ..._._______. _______. I; 4,A _____ ........... .,......._ ,„,_ ow D t , f-- 0 A ' ' * iMEIN , il ENE 6 1 11111 a -~--- — 111 allaillin a NM _______________ 11111.1.11111 0 -111NEINION I EINIM limal 3 �~~ - �� -- ----'Ealai -- main 1 1 • 6 MN I ME ?Ill MI a in Ni -I -- — ____~~�______ Test pit terminated ot4feet below ^��� -� existing~ _v��) Groundwater(table'seepage)encountered at feet duringexcavaUon.@5)Caving observed (at/from) to feet. Earth Solutions NWLLC • JOB NO. L.- n (' ,V w Q$.Qa CLIENT nth(' TEST PIT NO, DATE a- BY ELEVATION CONTRACTOR ��tt �vwr SHEET I of I LLQ w i +r rt oEE E1 iuc rasa NOTEDEPTH OF TOPSOIL&SOD an ' ► stn .19 e Ci tile 4 11111111 s Illimilill 4 11111111 1 al - , all 11111 '7 1111 I 1111 all o I iiii I 1111 II ion &S III v NI M al, IIII a..`«�•-._.....�..w......6...o_+..w..,....-r-.a a«®..®r.w R..®,i._ m wA ...�.d.,..®a.....y...m........ __®. T, El III 11111 8-is NI it terminated at 2> feet below exist p i Test ng grade. Groundwater(table/seepage)encountered at feet during excavation. O Caving observed(at/from) to feet. 1 Earth Solutions NWILc nt _ 1'-29 11 OH POWER STUB 23.44' 2' 8.42' INSTALL SILT FENCE AS SHOWN 44.58' PROPOSED CONTOURS BUILDING SETBACK$: FRONT/GARAGE: 20' SIDE: 5' REAR: 5' 10.73' ,--- i -- --- 'i--------434--- — — — — --t -=--------------436— z — 1 f SIB 50' PSE / 4 w w — — i EASEMENT / I; io io io w t EXISTING CONTOURS — — — — LL — "i --�— Q _ rSEWER L.OT �� -nozBUILDING FOOTPRINT _ l I 10' I 20 I UE h -- ----- - -- WATER S82'57'51 "E 90.02' SERVICE WATER METER IN CUL DE SAC ROW 24,01' AT LOT 8 51.57' 14.45' NOTES: 1. FINISHED GRADE TO SLOPE AWAY NOT LESS THAN 1:12 FOR A MINIMUM OF 6-FT OR TO PROPERTY LINE ADJACENT TO FOUNDATION AND SHALL START BELOW THE BOTTOMS OF ALL FOUNDATION VENTS. PROVIDE ADDITIONAL SOIL AS REQUIRED TO CREATE DRAINAGE AWAY FROM STRUCTURES ALONG PROPERTY LINE BETWEEN STRUCTURES. 2. ANY PORTIONS OF STRUCTURES WITH LESS THAN 10-FEET OF SEPARATION SHALL BE FIRE RATED. LOT ADDRESS: TBD FEDERAL WAY, WA LOT SIZE = 7,200 SF IMPERVIOUS COVERAGE: TOTAL IMPERVIOUS: 3,029 SF (42.1%) ROOF: 2,418 SF DRIVEWAY: 424 SF WALKWAY: 85 SF TCE=INSTAL TEMP. CONST. PATIO: 102 SF (TYP. ) HOUSE PLAN NO. 3264 A Job Number 0 10 �° a° 2 L.ENNAR NORTHWEST INC. 18218� Score 1�=20— _, ¢G�� ENT, WAND AVENUE SOUTH �fF� KENT, WA 98032 (425)251-6222 NORPOINT HEIGHTS RESIDENTIAL SITE PLAN Crown Obriees Sheet oi (425)251-8782 FAX z �< ttE SUBDIVISION —LOT NO 10 1 07 1 Cote 1110117 — q ENGINEERING. AND PLANNING Enc ' SURVEYING. ENVIRONMENTAf GFlnfir C PARC FI NO TRn file:P:\18000s\18218\lots\JB218-Norooint Heiohts-Lot.dwo Plot Date/Time'1/10/2017 21fi AM I1RRIff.S