The URL can be used to link to this page

505 PARADISE LN.PDFiiiiiiiiiiiiii 12722 505 PARADISE LN ADDRESS: -505 Pa-l-gef&se,� TAX ACCOUNT/PARCEL #: BUILDING PERMIT (NEW STRUCTURE) #: COVENANTS (RECORDED) FOR: CRITICAL AREAS #: DETERMINATION: Conditional Waiver El Study Required E] Waiver CRITICAL AREAS #: DETERMINATION: Conditional Waiver Ej Study Required E] Waiver DISCRETIONARY PERMIT #'S: DRAINAGE PLAN DATED: PARKING AGREEMENTS DATED: EASEMENT(S) RECORD FOR: PERMITS (OTHER — list permit #'s): PLANNING DATA CHECKLIST DATED: SCALED PLOT PLAN DATED: SEWER LID FEE LID #: SHORT PLAT FILE: LOT: BLOCK: SIDE SEWER AS BUILT DATED: SIDE SEWER PERMIT(S) #: GEOTECH REPORT DATED:q/2-4 STREET USE/ENCROACHMENT PERMIT #: FOR: WATER METER TAP CARD DATED: OTHER: L:\TEMP\DST's\Forms\Jana's Street File Checklist 5-14-08.doc achematic Site?lan NOT TO SCALE mum A911 be "Nothing in this Permit the i��rew " ailiowim - or I 1 49, of RAY currentlY ex". In( mainten8nc� litied building, drudure RMOVED B LANNING nonconforining or V11POP, 1/111 h's utaide the scoPe Of the or site 0ondition vo joless of whether such it pplwation, regar� Derud ion is shown On the building, structure or ponditi slltnlct� or- Approximate top sitet4n or drawing. Such building' of steep slope be the subject of a W� F con tion Ina . . - _. /_ — enforement scUon Existing Residence Cul-de-sac Steep �downslope Rockery HA-2 HA-1 LEGEND Number and approximate location of hand auger Approximate location of cross-section RESUM Sec. rt?o,-t SEP 2 12009 R. FILE BL� 6Q1N&%nFrrMENT ONDS keference: Site Plan based on an undated drawing titled, "Bodine House - 1220 5th Place South - Edmonds, Washington." NELSON GEOTECHNICAL No. Da Revision By CK 0 Project'Number 04 11 ow ASSOCIATES, INC. ---r4,.. Original DPN JGL Bodine Residence 1 711 791708 Site Plan GEOTECHNICAL ENGINEERS & GEOLOGISTS 17311-135M A.. ME. 3mm"iml cmm (425) 337-1669 Figure 2 (, a 25) 4MIM / F= 401-2510 5-69 ?0k(QJ'4t ),&kl%t I j— I PLANNING DATAO SINGLE FAMILY RESIDENTIAL STREET FILE Name: Site Address: V-, e- Date: 7- 8 PlanCheck#: Project Description: Reduced Site Plan Provided: (YES (9)) Zoning: Map Page: Corner Lot: (YES Flag Lot: (YES 0) Critical Areas Determination #: -?-005 —Do 5-1- OStudy Required 5V�P-et El Waiver SEPA Determination: WExempt Needed (for over 500 cubic yards of grading) 0 Fee 0 Checklist 0 APO List with notarized form Required Street: SideyLJ Rear: _J Actual Setbacl(s Street: S ide. �ide: Rear: El Detached Structures: I N'Rockeries: A V4-64-'n ro Fences/Trellises": Bay Windows/Projecting Modulation: El Stairs/De Height Datum Point: atum Elevation: Maximum Height Allowed: Actual Height: 0 o- Other Parking Required: Parking Provided: Lot Area: Maximum Lot Coverage: 35% Proposed: !Nb LIP . — Lot Coverage Calculations: ADU Created: (YES Subdivision: Legal Nonconforming Land Use Determination Issued: (YES Coruments Plan Review By: Mrming 0,3ta Form 04-11-06.doc die City of Edmonds APPUCATION for SIDE SEWElt PERMff NEW CONSTRUCTION E] REPAIRS OWNER ------ ----------- JOB ADDRESS .-S.-as . .... Oil #F ---- 17--p,1p,1Y4 - — ------------ EASEMENT NO - --------------------------- LID No - ------------------ - ASMT. NO. - CONTRACTOR. ------ PERMIT NO. LEGAL DESCRIPTION: LOT NO - ------ ------------------ ------- BLOCK NO . ..... ------------- ..................................... DATE-------------------------------- ----------- By ...................... At., APPLICATION -S mi iiA . . , , �! ;,4- i* u, "D City td, -0, - my. Jli - --------- CTION 1p REPAIRS E] LID NO. ....... ASMT.�*M. NEW CONSTRU ........ s� -- ------ PERMIT- NO.-!� .OWNh -------- ............................................. CONTRACTOR ------------------------------------------------------------------------------ ....... . AD --- C:;F= .... -DESCRIPTION: LOT NO.'-.' ........... BLOCK NO - -------_---------- JOB A, DRES� . .................... F ..... �._ . ..... LEGAL ----------------------- ------ -4 ---------------------------------------------------------------------------------------------------------------------------------------------- NAME OF ADDITION --------------------- ---------------------------------------------------------- .................... ............. .Cn Approved: y 01 14 A "'V "o, 7" '2 a, - 14 * L -y SIDE SEWER PERMIT CITY OF EDMONDS WATER -SEWER DEPARTMENT PERMIT 4. V ....... of the construction.) BEFORE covering any portion Call 775-2525 for side sewer inspections No Sat., Sun., or holiday inspections. (Inspection will be provided within 24 hours after requst. ....................... ......................... ON ----- .......... ........... LOCATION OF CONSTRUCTI ADDRESS All h IZ r2— ..... ...................................................................... L_ __ ................... ....... PROPERTY LEGAL DESCRIPTION -------------------- ...... ................ .................. . ............. .................... . ................................. ............................................................. ..... . ...... ....................... . .......................... . ................. BUILDER ............ --------- -------- - ------------------------------------------------------- ......................... OWNER AND/OR ....................................... SS .................. .................. ....................................................... ............................. 4 S NAME ADDRE CONTRACTOW ------ - ------------ 1973k�pfor repair and/or connection of a side sewer to the city sanitary sewer is granted ..... ----- - ---------- i ----- — ------ Permission system in accordance with City of Ed� lAas ordinances. rENTION IS CAIJ D TO THE IOLLOWINI: it to construct sewer inside property line. A licensed Side Sewer contractor must be employed to construct NOTE No. 1—The owners of the property may obtain a perra sewer before it has been Inspected. side sewer in street area. Do not cover any portion of nable from the City Engineer's office. T-E 0 rm, ri ht-of-way requires an invasion of Right -of -Way Permit obtal NO N 2—All work perfo ed in city g s governing side sewers when you get permit. —Obtain full Information regarding ordinance 11.16.030 and Regulation No bends in grade NOTE No. 3 rty line and 12 inches inside property line; minimum grade of 2%. NOTE No. 4—Top of side sewer must have at least 30 inches cover ge at prope shaxper than % will be permitted. condition. Contractors shall be responsible for failure due to improper NOTE No. 5--Trenches in street must be water settled and surface of street restored to original work which may develop within one year of completion. its appurtenances except to in- rovided for in the permit, or to do any work on the main sewer or --It is unlawful to alter or do any other work than Is p NOTE No. 6 sert the pipe into the wye. ... 'BY ............. ... ..... ......... Date --------------- - ---------------- ....... Date ......... ......... BY ------- - ----- ---- Date --- .......... By --------- DISAPPROVED ..... . .. . .. . ........................... ........................................................... ... .... ... _... . : %� ` ", - -,� APPROVED ate ........... By..--- ---- ................. ks: ------ -------------------------- . .. . .......................................................... . .................................................................................... ................................................................ ............................................. ......... ................. ................... ... ........... ............. . .................... ........................................ pection B TH ermit C opies ST Be Signed By Owner of Firm Performing Construction PRIOR To Request For Ins nstructed under this permit ide sewer* tallatio co .................. ....................... .... hereby certify that the s I. .. ... . . ......... . ... Firm Perfor g Construction) wner of C nds. instal in accor nee all gove ng ordinances of the City of Edmo �4D ............................ Dated this-- ............. day 0 . ..................... ........ LAsewerW,lat,io c, Ry 0 ................ .0 w r I sewer Other Ch ck EFORE you dig for: Water E], Gas C], Telephone [3, Po er 14 -177�7_ GEOTECHNICAL ENGINEERING LETTER BODINE PROPERTY 505 PARADISE LANE EDMONDS, WASHINGTON PREPARED FOR MR. ALLAN BODINE City of Edmonds Build' Department Ing 1 r juAN D RESUB MAY 18 2011 WILDING DEPARTMENT CITY OF MMONDS M STREET FILE NELSON GEOTECHNICAL N If= A ASSOCIATES9 INC. GA GEOTECHNICAL ENGINEERS & GEOLOGISTS Main Office 17311 — 135'�'Avenue NE, A�500 Woodinville, WA 98072 (425) 486-1669 FAX (425) 481-2510 (425) 337-1669 Snohomish County April 27, 2011 Mr. Allan Bodine 505 Paradise Lane Edmonds, Washington 98020 Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I Dear Mr. Bodine: Engineering -Geology Branch 437 East Penny Road Wenatchee, WA 98801 (509) 665-7696 FAX (509) 665-7692 This letter summarizes our opinions and recommendations for your patio and retaining wall project at your residence at the above address. INTRODUCTION The site is situated on a moderate to steep north -facing slope off of Paradise Lane, as shown on the Vicinity Map in Figure 1. We were informed that you started to construct a patio on the northwestern side of your existing residence, but were stopped by the City of Edmonds who requested a Critical Areas Study because the patio is located at the top of a steep slope. Plans also include the construction of a short retaining wall. For our use in preparing this letter, we have been provided with photos of the patio; a site plan that was stamped by the City of Edmonds (the City) on September 21, 2009; a notice of Enforcement Violation from the City dated August 16, 2010; a letter from the City dated February 14, 2011 requesting an application and building pen -nit; an Order to Correct Violation letter from the City dated March 1, 2011; and a letter from the City titled "Plan Review Comments For Plan Check #2011-0152 — Patio Replacement and Retaining Wall at 505 Paradise Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C 11 April 27, 2011 Page 2 Lane," dated March 8, 2011. We have previously prepared a geotechnical evaluation for foundation improvements for your residence titled "Geotechnical Engineering Evaluation — Bodine Residence — Foundation Repairs — Edmonds, Washington," dated July 18, 2008, and recommended pin pile foundation supports for settlement related issues in the northeastern comer of the house. 041IT00 The purpose of this study is to explore and characterize the site surface and subsurface conditions within the vicinity of the planned patio and retaining wall, and provide geotechnical comments and recommendations for the construction of those structures. Specifically, our scope of services includes the following: 1 Review geologic maps of the area, project plans, and our previous geotechnical report. 2. Visit the site to observe the current conditions. 3. Evaluate the existing conditions on the steep slope. 4. Conduct hand -auger explorations near the patio and within the extent of the retaining wall. 5. Provide our opinion regarding the patio and the plans for the wall, and methods to mitigate impacts to the steep slope. 6. Address the concerns of the City with respect to Edmonds Codes ECDC 23.40.090, 23.80.050, 23.80.060, and 23.80.070. 7. Document our observations and recommendations in a written geotechnical letter. SITE CONDITIONS Surface Conditions The site is approximately 0.14 acres in size. The site slopes moderately to steeply down to the north towards neighboring residential properties. The property is bordered by Paradise Lane to the south, and residential properties to the east, west, and north. The southern portion of the property is occupied by the residence and is moderately sloping. The area behind the residence is relatively flat and is mostly covered by grass. A retaining wall constructed of concrete rubble/fragments approximately four feet in height is located at the top of the steep slope in the northeastern portion of the property. A recently constructed patio is located behind the NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I April 27, 2011 Page 3 northwestern comer of the house and is situated at the top of the slope. We observed concrete rubble under a portion of the patio. A staircase created out of concrete pavers is located on the slope starting at the northwestern comer of the patio. The site then slopes steeply down at an approximate inclination of 35 degrees (70 percent) as shown on Cross -Section A -A' and Cross Section 13-13' in Figures 3 and 4 respectively. The slope is covered with trees and brush. We did not observe seepage on the site slopes during our site visit on March 24, 2011. Subsurface Conditions Geology: The geologic units for this area are shown on the Prelim- inaKY Surficial Geologic Mal) of the Edmonds East and Edmonds West Quadrangles, Snohomish and King Counties, Washingto , by Mackey Smith (USGS, 1975). The site is mapped as Vashon Recessional Outwash (Qvr). The recessional outwash deposits are generally described as sand and gavel, with some cobbles. Our explorations encountered undocumented fill along the top of the slope and we were not able to excavate through the fill. Explorations: The subsurface conditions within the site were explored on March 24, 2011 by excavating two hand augers on the steep slope to depths of 4.0 feet and 6.5 feet below the existing ground surface. We also excavated one hand auger next to the patio and one in the middle of the backyard near the location of the planned wall to depths of 4.5 feet to 7.0 feet. We have also included the logs of our hand augers that we conducted on June 27, 2008 for the previous study for the foundation improvements. The approximate locations of our current and previous explorations are shown on the Site Plan in Figure 2. A geologist from NGA was present during the explorations, examined the soils and geologic conditions encountered, obtained samples of the different soil types, and maintained logs of the explorations. The soils were visually classified in general accordance with the Unified Soil Classification System, presented in Figure 5. The logs of our 2011 explorations are attached to this report and are presented as Figure 6, and our 2008 explorations are presented as Figure 7. We present- a brief summary of the subsurface conditions in the following paragraph. For a detailed description of the subsurface conditions, the logs of the hand augers should be reviewed. NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I April 27, 2011 Page 4 Below a surficial layer of topsoil, we encountered dark brown, fine to medium sand with silt, gravel, and organics. We interpreted this material to be undocumented fill. Hand Augers 1 through 4 were terminated in the fill at depths of 7.0 feet, 4.0 feet, 6.5 feet, and 4.5 feet below the existing ground surface, respectively. The 2008 explorations in the northeastern portion of the site also encountered the undocumented fill and were terminated in the fill. Hydrologic Conditions Groundwater seepage was not encountered in our explorations. However, it appears that a perched groundwater condition could exist on the site. Perched water could occur on the site during periods of wet weather. Perched water occurs when surface water infiltrates through less dense, more permeable soils and accumulates on top of underlying, less permeable soils. Perched water does not represent a regional groundwater "table" within the upper soil horizons. Perched water tends to vary spatially and is dependent upon the amount of rainfall. We would expect the amount of perched water to decrease during drier times of the year and increase during wetter periods. SENSITIVE AREA EVALUATION Seismic Hazard Hazards associated with seismic activity include liquefaction potential and amplification of ground motion by soft deposits. Liquefaction is caused by a rise in pore pressures in a loose, fine sand deposit beneath the groundwater table. It is our opinion that the native glacial soils interpreted to underlie the site at depth and form the core of the site slope have a low potential for liquefaction or amplification of ground motion. However, the loose surficial. soil and fill on the slope have the potential for shallow sloughing failures during seismic events. Such events should not affect the planned patio and retaining wall provided they are designed and constructed as described in this letter. Erosion Hazard The criteria used for determining erosion hazards include soil type, slope gradient, vegetation cover, and groundwater conditions. The erosion sensitivity is related to vegetative cover and the specific surface soil types, which are related to the underlying geologic soil units. The Soil NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane w_:6 Edmonds, WA NGA File No. 7917C I I April 27, 2011 j.1 Page 5 Survey of Snohomish County Area, Washington, by the Soil Conservation Service (SCS) was reviewed to determine the erosion hazard of the on -site soils. The surface soils for this site were mapped as Everett gravelly sandy loam, 15 to 25 percent slopes. The erosion hazard for this material is listed as moderate. It is our opinion that the erosion hazard for site soils should be low to moderate in areas where the vegetation is not disturbed. Landslide Hazard/Slope Stability The criteria used for evaluation of landslide hazards include soil type, slope gradient, and groundwater conditions. The steep east/southeast-facing slope along the southern property line descends at gradients in the range of 35 degrees (70 percent) with an overall height of approximately 20 f.eet. We did not observe evidence of past erosion or sloughing on the site slopes during our site visit. We did not observe seepage on the slopes during our recent visit. Relatively shallow failures as well as surficial erosion are natural processes and could occur in the loose surficial soil on the steep slope. It is our opinion that while there is potential for erosion, soil creep, and shallow failures within the loose surficial. soils and undocumented fill that is located at the upper portion of the slope, the potential for deep-seated slope failure under current site conditions is low. Proper site grading and drainage as recommended in this letter should help maintain current stability conditions. CONCLUSIONS AND RECOMMENDATIONS General In our opinion the planned earthwork associated with the patio and retaining wall should be minor and should not have adverse impacts on the steep slope, if conducted according to the recommendations presented in this letter. Our explorations generally encountered loose to medium dense, silty sand soils in the backyard and on the slope, which we interpreted as fill. Our previous soil explorations in 2008 near the northeastern comer of the residence also indicated that the site is underlain by loose undocumented fill. Although our hand tool explorations did not extend through the fill, it is our interpretation that the fill is underlain by competent native soil that form the core of the slope. Development plans include a new patio behind the northwestern comer of the house, and NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C 11 April 27, 2011 Page 6 constructing an approximately 2-foot tall timber log retaining wall across the remainder of the backyard at the top of slope. Backfill is planned behind the retaining wall to create a level area. The existing undocumented fill has already experienced settlement and subsidence, as pin piles were installed under the northeastern comer of the house to stop the settlement. The pin piles r7l� stabilized that comer of the house, but not the fill in that area, nor the fill along the remainder of the backyard area. Therefore, to limit the impact of the patio and the planned retaining wall on the slope and to stabilize the top of slope, we recommend that a pin pile wall system be installed on the downhill side of the patio and along the top of slope to the full extent of the planned wall towards the eastern property line. The new pin piles will buffer the slope from the new construction. Two-inch pin piles should be driven through the fill and advance a minimum of six feet into native, competent material. The pin piles should stick a maximum of two feet above final grade; the free board could then be used to support the patio and the new retaining wall. These recommendations are farther discussed in the Patio and Retaining Wall Recommendations subsection of this letter. The recommended effective setback and foundation U11 embedment should allow for normal slope recession during a reasonable life span of the structures, provided that the steep slope is not disturbed during or after construction. Some of the pin piles may be in close proximity to the rubble wall in the northeastern comer of the site. Every effort should be made to maintain the stability of this wall. If the pin piles LJ encountered some elements of this wall, the pin piles should be moved a sufficient distance away as to not undermine the wall. The planned earthwork associated with the patio and pin pile retaining wall should be minor. However, the soils encountered on this site are considered moisture -sensitive and may disturb easily when wet. To lessen the potential impacts of construction on the slopes and to reduce cost overruns and delays, we recommend that earthwork take place during dry weather if possible. If earthwork takes place during wet weather, additional expenses and delays should be expected. These extra expenses could include additional erosion control and temporary drainage measures to protect the slope. In any case, any excavation spoils should be hauled off site and not allowed to reach the slope. Also, the vegetation on the slope should not be disturbed. Any disturbed areas should be promptly repaired. NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I April 27, 2011 Page 7 Erosion Control and Slope Protection Measures The erosion hazard for the on -site soils is listed as moderate, but the actual hazard will be dependent on how the site is graded and how water is allowed to concentrate. Best Management Practices (BMP's) should be used to control erosion. Areas disturbed during construction should be protected from erosion. Erosion control measures may include diverting surface water away from the stripped or disturbed areas. Silt fences and/or straw bales should be erected to prevent muddy water from flowing over the slope. No material should be stockpiled on the site. Disturbed areas should be planted as soon as practical and the vegetation should be maintained until it is established. The erosion potential for areas not stripped of vegetation should be low. Protection of the setback and steep slope areas should be performed as required by the City of Edmonds. Specifically, we recommend that the slope not be disturbed or modified through f*..i-_'1"1 placement of any fill or removal of the existing vegetation. No additional material of any kind L'i should be placed on the slope or be allowed to reach the slope, such as excavation spoils, lawn clippings, and other yard waste, trash, and soil stockpiles. Trees should not be cut down or removed from the slope unless a mitigation plan is developed, such as the replacement of vegetation for erosion protection. Replacement of vegetation should be performed in accordance with the City of Edmonds code. Any proposed development within the slope setback area, other than the patio and retaining wall described above, should.be the subject of a specific geotechnical evaluation. Under no circumstances should water be allowed to concentrate on the slope. Site Preparation and Grading Minor grading is needed for this project and should only consist of removing the grass and topsoil in the backyard area, and removing any concrete rubble that is currently under the patio area. We do not recommend removing the topsoil and sod until the pin piles are installed and the crushed rock is ready to be placed. The subgrade should be covered with crushed rock as soon as possible after the topsoil is removed. The site soils are considered to be moisture -sensitive and will disturb easily when wet. We recommend that construction take place during dry weather if possible. However, if construction NELSON GEOTECHNICAL ASSOCIATES, INC. F Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C 11 April 27, 2011 Page 8 takes place during the wet season, additional expenses and delays should be expected due to the wet conditions. Additional expenses could include the need for placing a blanket of rock spalls on exposed subgrades areas. Wet weather grading will also require additional erosion control and site drainage measures. The on -site soils are not suitable for use as structural fill. Patio and Retaining Wall Recommendations Two-inch diameter steel pipe piles (pin piles) should be used to support the patio and the retaining wall and backfill. We recommend using galvanized Schedule 80 or stronger pipe. The pin piles should be driven using a hand-held 140-lb jack hammer. The pin piles should be a minimum of 15 feet long with a maximum 2-foot stickup, and be driven a minimum of five feet into competent native material. The pin piles should be kept a minimum of three feet apart. Any couplers will need to be a minimum of two feet below the finished ground surface on the downhill side of the wall and patio. Piles that do not meet this minimum embedment criterion or piles that are obstructed on debris in the fill should be replaced. For the patio, the pin piles should be placed three feet on center along the northern side of the patio, including one pin pile on the western side of the patio, as shown on the Improvements Site Plan on Figure 8. The wall can then continue towards the eastern property line, with pin piles placed every three feet. After the pin piles are placed, the wall and patio area should be lagged using 4-inch by 12-inch pressure -treated timber. Adequate gaps should be maintained between the lagging elements to allow any water flow through the face of the wall. All backfill behind the wall and under the patio should consist of 3/4-inch clean crushed rock. The crushed rock should be compacted with a plate compactor. It is imperative that water not be allowed to pool behind the wall, therefore extreme care should be taken not to contaminate the crushed rock with silt or organics. For the backyard area, filter fabric should be placed on top of the crushed rock prior to placing any topsoil to prevent fines from washing into the crushed rock. We recommend a maximum thickness of four inches of topsoil in this area. For the patio area, the pavers can be placed directly on the crushed rock. We should note that the existing undocumented fill is anticipated to be at least 10 feet thick. We were not able to auger through the fill to the native soil below. There is also the possibility that NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C 11 April 27, 2011 Page 9 the fill may contain debris. If debris such as large chunks of asphalt, concrete, wood, or metal exists in the fill, there is a possibility that such debris may obstruct the installation of driven piles in some locations. There should be contingencies in the budget and design for additional/relocated piles to replace piles that may be obstructed by debris in the fill. EROSION AND DRAINAGE IMPROVEMENTS The slope and all disturbed areas should be restored promptly after construction has been completed. This would include compacting any loose material, covering exposed areas with jute netting, and planting deep-rooted vegetation within the affected areas. The vegetation cover should be maintained until established. Also, no runoff of any kind should be allowed to flow over the site slopes either during construction or on a permanent basis after the work has been completed. Runoff generated on this site, including downspouts, yard drains, footing drains, and other hard surfaces should be collected in tightlines and routed to the bottom of the slope or to an approved system. USE OF THIS LETTER This letter has been prepared for Mr. Allan Bodine and his agents for use in the planning and design of the new deck planned on this site only. The scope of our work does not include services related to construction safety precautions and our recommendations are not intended to direct the contractors' methods, techniques, sequences, or procedures, except as specifically described in our letter. There are possible variations in subsurface conditions between the explorations and also with time. Our letter, conclusions, and interpretations should not be construed as a warranty of subsurface conditions. A contingency for unanticipated conditions should be included in the project budget and schedule. We recommend that NGA be retained to provide monitoring and consultation services during construction to confirm that the conditions encountered are consistent with those indicated by the explorations, to provide recommendations for design changes should the conditions revealed during the work differ from those anticipated, and to evaluate whether or not deck support installation complies with our recommendations. We should be contacted a minimum of one week prior to construction activities. NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I April 27, 2011 Page 10 FA I All people who own or occupy homes on or near hillsides should realize that landslide movements are always a possibility. The landowner should periodically inspect the slope, especially after a winter storm. If distress is evident, a geotechnical engineer should be contacted for advice on remedial/preventative measures. The probability that landsliding will occur is substantially reduced by the proper maintenance of drainage control measures at the site (the runoff from the roofs should be led to an approved discharge point). Therefore, the homeowner should take responsibility for performing such maintenance. Within the limitations of scope, schedule and budget, our services have been performed in accordance with generally accepted geotechnical engineering practices in effect in this area at the time this letter was prepared. No other warranty, expressed or implied, is made. Our observations, findings, and opinions are a means to identify and reduce the inherent risks to the owner. 0-0-0 NELSON GEOTECHNICAL ASSOCIATES, INC. Geotechnical Engineering Letter Bodine Property 505 Paradise Lane Edmonds, WA NGA File No. 7917C I I April 27, 2011 Page 11 We appreciate the opportunity to provide service to you on this project. If you have any questions or require further information, please call. Sincerely, NELSON GEOTECHNICAL ASSOCIATES, INC. 6V ala Dodoye-Alali Project Geologist Khaled M. Shawish, PE Principal BD:KMS:kmn Three Copies submitted Nine Figures Attached NELSON GEOTECHNICAL ASSOCIATES, INC. VICINITY MAP Not to Scale Edmonds, WA 0) Project Number NIELSON GEOTECHNICAL No. Date Revision By CK t:: ASSOCIATES, INC. 7917C1 I Bodine Property ----�NGA 1 4/18/11 Original DPN BD C GEOTECHNICAL ENGINEERS & GEOLOGISTS Vicinity Map 17311-135th A.. NE, X5W Snonornish County (425) 339�1669 Figure 1 Woodmill., WA 98072 Wen=e/Chalan (509) 665-7696 5) 486-1669 / F- 481-2510 —Isong-�.h— C Schematic Site Plan NOT TO SCALE rlmw��EM 111111111111010099 Property line HA-1 Number and approximate location of hand auger March 24, 2011 HA-1A Number and approximate location of hand auger June 27, 2008 A A' Approximate location of cross-section Reference: Site Plan based on an undate d drawing titled, "Bodine House - 1220 5th Place South - Edmonds, Washington." Project Number N LSON GEOTECHNICAL No. Date Revision By CK 7917C1 1 Figure 2 AsSOCIATES, INC. Bodine Property -"O�N G'A_� 1 4/18/11 Original DPN BD Site Plan GEOTECHNICAL ENGINEERS & GEOLOGISTS 17311-135th A- NE, A-500 S-h..mh C ... ty (425) 337-1669 Woodimille, WA 98072 Wth../Ch.1.n (509) 655-7696 (425) 488-1669 / Fm 481-2510 —W—g-fth.— L -n —4 —0. (Co M _.X 0 —4 z C) , 3 Cr South North M 230-- Existing Approximate location _230 residence of timber wall - CO 0 0 CAI CAI CD CD -V 220- HA-4 Wood logs 0 0 (D > a) Parking C: 0 Rockery > 210-- a) LU 35* A-3 Rockery 35_ j 0 Z (D cu mn E X > X 0 n > r z 200-- CL M M z r R W z Ln 0 M 0 z in M 0 C) M —i M 190, 190 o 0 r I 0 z I I I I t I I I I I I I I I I I I I I I I I I I I I I I I I t I I I I I I I I I U) 0 10 20 30 40 50 r Distance (feet) z Exploration 9 C) 0) Hand Auger Designation --> HA-1 Groundwater Level--> V During Exploration NOTES: 1) Stratigraphic conditions are interpolated between Geologic Contact --> the explorations. Actual conditions may vary. 0 03 2) Elevations are approximate. 0 1< (ap roximate) z Co 0 0 Al Reference: Cross Section is based on field measurements using a hand-held clinometer and 100-ft tape measure. NGA Drafting 201 1\7917CI 1 Bodine Property\CS.dwg U� -n —0- (0 CD 0 z 3 CD South 230-- Existing residence Bill Patio North _230 0 1 03 0 0 U) CA HA-1 0 220-- (D 63 A-2 > 210-- a) 35* W M 0 Z W CU IJI n z > E X 0 > CL r z QL 200-- Pi M < z > r 2 0 z 0 Z 0 1901 190 M 0 r Z 0 z a 0 n 0 10 20 30 40 50 > r Distance (feet) - z Exploration P Hand Auger Designation ----> HA-1 4. �8 a Groundwater Level---> V NOTES: During Exploration 1) Stratigraphic conditions are interpolated between the explorations. Actual conditions may vary. Geologic Contact ----> 2) Elevations are approximate. (approximate), z Reference: Cross Section is based on field measurements using a hand-held clinometer and 100-ft tape measure. 0 0 X 1201 1\7917C1 II Bodine Property\CS.dwg F__". UNIFIED SOIL CLASSIFICATION SYSTEM GROUP MAJOR DIVISIONS GROUPNAME SYMBOL CLEAN GW WELL -GRADED, FINE TO COARSE GRAVEL COARSE- GRAVEL GRAVEL GP POORLY -GRADED GRAVEL GRAINED MORE THAN 50 % GRAVEL GM SILTY GRAVEL OF COARSE FRACTION RETAINED ON SOILS NO. 4 SIEVE WITH FINES GC CLAYEY GRAVEL SAND CLEAN SW WELL -GRADED SAND, FINE TO COARSE SAND SAND SID POORLY GRADED SAND MORE THAN 50 % RETAINED ON MORE THAN 50 % NO. 200 SIEVE OF COARSE FRACTION SAND Sm SILTY SAND PASSES NO. 4 SIEVE SC CLAYEY SAND WITH FINES FINE - SILT AND CLAY ML SILT INORGANIC CL C LAY GRAINED LIQUID LIMIT LESS THAN 50 % ORGANIC OL ORGANIC SILT, ORGANIC CLAY SOILS SILT AND CLAY MH SILT OF HIGH PLASTICITY, ELASTIC SILT INORGANIC MORE THAN 50 % PASSES LIQUID LIMIT CH CLAY OF HIGH PLASTICITY, FLAT CL . AY NO. 200 SIEVE 50 % OR MORE ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: 1 ) Field classification is based on visual SOIL MOISTURE MODIFIERS: examination of soil in general accordance with ASTM D 2488-93. Dry - Absence of moisture, dusty, dry to the touch 2.) Soil classification using laboratory tests Moist - Damp, but no visible water. is based on ASTM D 2488-93. 3) Descriptions of soil density or Wet - Visible free water or saturated, consistency are based on usually soil is obtained from below water table interpretation of blowcount data, visual appearance of soils, and/or test data. Project Number NELSON GEOTECHNICAL No. Date Revision By CK 79171311 Bodine Property -___�NGA ASSOCIATES, INC. 1 4/18/11 Original DPN BD Soil Classification Chart GEOTECHNICAL ENGINEERS & GEOLOGISTS Figure 5 17311-135th A- NE, A-6W Swhoft CouM (425) 337-1669 din 16 Wenatc=/Chalan (509) 665,7696 (42=)4WIVOd6i IWFAn94880172251 0 n*1wng*o%ch.wm LOG OF EXPLORATION DEPTH(FEET) Usc SOIL DESCRIPTION HAND AUGER ONE 0.0-0.3 TOPSOIL / SOD 0.3-7.0 DARK -BROWN, FINE TO MEDIUM SAND WITH SILT, GRAVEL, AND ORGANICS (LOOSE TO.MEDIUM DENSE, MOIST) (ELLIL SAMPLE WAS COLLECTED AT 6.5 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 7.0 FEET ON 3/24/11 HAND AUGER TWO 0.0-0.3 TOPSOIL / SOD 0.3-4.0 DARK BROWN, FINE TO MEDIUM SAND WITH SILT, GRAVEL, AND ORGANICS (LOOSE TO MEDIUM DENSE, MOIST) ELLIL NO SAMPLES WERE COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.0 FEET ON 3/24/11 HAND AUGER THREE 0.0-0.3 TOPSOIL / SOD 0.3-6.5 DARK BROWN, FINE TO MEDIUM SAND WITH SILT, GRAVEL, AND ORGANICS (LOOSE TO MEDIUM DENSE, MOIST) (ELLL) NO SAMPLES WERE COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 6.5 FEET ON 3/24/11 HAND AUGER FOUR 0.0-0.3 TOPSOIL I SOD 0.3-4.5 DARK BROWN, FINE TO MEDIUM SAND WITH SILT, GRAVEL, AND ORGANICS (LOOSE TO MEDIUM DENSE, MOIST) (ELLIL NO SAMPLES WERE COLLECTED GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED HAND AUGER CAVING WAS NOT ENCOUNTERED HAND AUGER WAS COMPLETED AT 4.5 FEET ON 3/24/11 LSB:DPN NELSON GEOTECHNICAL ASSOCIATES, INC. FILE NO: 7917C1 1 FIGURE 6 LOG OF EXPLORATION lFrom 6/27/08 DEPTH(FEET) Usc SOIL DESCRIPTION HAND AUGER ONE -A 0.0-0.3 0.3-5.0 HAND AUGER TWO -A 0.0-1.0 1.0-3.5 HAND AUGER THREE -A 0.0-0.3 0.3-2.5 DPN:MDR SOD SP-SM DARK BROWN SAND WITH GRAVEL AND SILT (LOOSE, MOIST) (FILL) SAMPLES WERE COLLECTED AT 1.0, 2.5, AND 4.5 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED SLIGHT CAVING WAS ENCOUNTERED FROM 0.0 TO 5.0 FEET HAND AUGER WAS COMPLETED AT 5.0 FEET ON 6/27/08 SP-SM DARK BROWN SAND WITH GRAVEL, SILT AND CONCRETE FRAGMENTS (LOOSE, MOIST) (FILL) SP-SM DARK BROWN SAND WITH GRAVEL AND SILT (LOOSE, MOIST) (FILL) SAMPLES WERE COLLECTED AT 1.0 AND 2.5 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED SLIGHT CAVING WAS ENCOUNTERED FROM 0.0 TO 3.5 FEET HAND AUGER WAS COMPLETED AT 3.5 FEET ON 6/27/08 SOD SP-SM DARK BROWN SAND W&H GRAVEL AND SILT (MEDIUM DENSE, MOIST) (FILL) SAMPLES WERE COLLECTED AT 1.0 AND 2.0 FEET GROUNDWATER SEEPAGE WAS NOT ENCOUNTERED SLIGHT CAVING WAS ENCOUNTERED BETWEEN 0.0 AND 2.5 FEET HAND AUGER WAS COMPLETED AT 2.5 FEET ON 6/27/08 NELSON GEOTECHNICAL ASSOCIATES, INC. FILE NO 7917C1 I FIGURE 7 Improvements Site Plan NOT TO SCALE Approximate top of steep slope 7 New Js J Patio Pressure treated S1. e timber Pin Piles 3 feet o/c 0 Existing Rock Wall --ft . --ft. . -ft. . --ft . -.ft . -ft. . LEGEND Property line Reference: Site Plan based on an undated drawing titled, "Bodine House - 1220 5th Place South - Edmonds, Washington." Project Number NELSON GEOTECHNICAL No. DaE Revision I By CK Bodine Property ASSOCIATES, INC. 7917C1 1 ----�NGA 1 4/18/11 1 Original 1EFBD DPN Improvements Site Plan GEOTECHNICAL ENGINEERS & GEOLOGISTS Figure 8 17311-136th A.. NE. A-600 Snohornish County (425) 337-1669 Woo-rnnfl.. WA 98072 Vftn.toh-/Ch.1.n (509) 665-76M (125) 486-1669 / Fox 481-2510 —nelsongeoMch- Schematic Wall Detail NOT TO SCALE Patio 4-by-12 Pressure Treated Pavers Timber Lagging Leave Gap Between Pavers Timbers Tin 12.0 ft. (max) 17 an 3/4-inch Cle" T -inch Pin Pile c :�><3 feet o/c Crushed Rock FFi I I ber Project Num 7917C1 1 Figure 9 ? Fill 5.0 ft. (min) Topsoil (4 inches max) Filter --\\" Fabric 3/4-inch Clean Crushed Rock Fill 5.0 ft. (min) 15.0 ft. (min) 4-by-12 Pressure Treated —Timber Lagging Leave Gap Between //—Timbers T2.0 ft. (max) Ar 2-inch Pin Pile ��_3 feet o/c Fill 15.0 ft. (min) N E LSON GEOTECHNICAL Nod Date I Revision By CK NI ASSOCIATES, INC. 4/21111 Original OPN BD Bodine Property NN - �AA 1 Schematic Wall Detail GEOTECHNICAL ENGINFERS & GEOLOGISTS 17311-135th A., NE. A4M Snohomish County (425) 337.1889 Woodn"le, WA 98072 Wth..ICW.� (509) 655-7MG C425) 486-1669 1 Fax 481-2510 m gw_ "Root tj .01 "'3' Lr�l_ RD N -- An- 1 1w 41wk A 76- 1,17 -1 Q'i J�:q, I MZ*, 'o If '4A 01 T"C.' WRIMIN AL 41 EMN6. MAI TAT,% N AI on, Porn 'Fir. FS A6, lie; Ig IK* x1s, IL 4r� V4 IK 4W L V, 41 4:1 117 05 �l P t*A a La I z 0 INYWO Fl a LI400-11, ire LO CD LO 0 cn -i lho-, M Mom CIA Date:— ir I S-D IMPEC Schematic Site Plan NOT TO-iCALE .1i . 0�& P,,,,t &PPmv&1 pro*" ehall be othing U, lowi" -or perok9ing th" interpreied M &I egal Mainten&ac� of L%ny currently e'Wi" ill "oruUng or 11noerInitted buildln& structure nonwaf ie ecoPe Of the or aite 0oadkion vo �h is outaide tk hcation, ,,:g&rdled15 of whether such t Rnn nn the =gtructure or conditIOD W tulu'" " or V A.pproximate top 4" Such building. strudure site Ian or dmwing- steep slope 002tion mg be the subject of a wPWO 'nlrom"Ut iction., 'Y' - 15b - �4 ,Fn BY NGINEfiRING 0 ER/CONTRACTOR IS RESPONSIBLE F R EROSION CONTROL AND DRAINAGE If _W'ibeA Existing Residence R I 11Z- 7/// S.-, (4 'OP *zw Cul-de-sac idownslope 1 -1-76 Rockery par PL 01 Dn— I IN U A IPPR D BY I HA-3 C-1 ;14A LEGEND 4tr, GM 26. 0 4 0 C— Number and approximate location of hand auger G e 5- ZL-6 F F 10 V4 r5 r, Comer Fla&_ A A' Approximate location UlbAck j Ruuired Actual t�v') t of cross-sedon Front See- rtfo't Sides C-1W 7�3.33 IESUB % .Wj� ill L001( Mar iJ 15 /S--f- .9ther SEP 16 2011 ff-R& ILDING DEPARTMEN1 Hei-Ot ?,J'TY OF EDIVIONDIF7 Edmonds, Washington.* Reference: Site Plan based an an undated drawing titied, "Bodine House - 1220 5th Place South NICAL TNO.Da7taj Revision By CK NELSON GEOTECHNICAL Project Number *,)A A SSOCIATES, INC. 791708 Bodine Residence GEOTECHNICAL ENGINEERS & GEOLOGISTS Site Plan OVA.1 0 V � -5,c q 1r: )�a -I; /, ge r- z cri C= 0 CD WLS 0 LL LU CA City of Edmonds BLD20110152 121 5 TH AVENUE NORTH EDMONDS, WA 98020 - (425) 771-0220 FAX(425) 771-0221 Website: %k-.k-vv.ci.edmonds.%va.us PUBLIC WORK DEPAR'l MLNT Planning - Building -Engineering Engineering Plan Review Comments Permit Application #: BLD20110152 Date: March 14, 2011 Project Name/Address: Bodine — 505 Paradise Lane Contact Person/Address, Fax or E-mail: Mail Only Reviewer: JENNIFER LAMBERT - Division: — ENGINEERING During review of the subject submittal, it was found that the following information, corrections, or clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at our website: www.ci.edmonds.wa.us under City Government / Develop ment Services Department Engineering Division then scroll down to Handouts: 1) Please show the impervious surface calculations as shown below, on the Site Plan: Line Type Area (square Feet) 1. Exempt Exempt Non-E7xemdt 2. Replaced 01 3. New Total Replaced +New (Non- Exempt) (add numbers in blue boxes) 4. 2) Please show the year of construction on the Site Plan as shown in the sample Site Plan provided. r 2 -/ �_ 3) Please rill out the!qormwater worksheet provided in handout #E72 (attached) and submit with plans. /-',Ili C: /% 5 Y_*4 01 4) Please show all impervious surfaces on the Site Plan and the year constructed. It appears that there is some impervious surfaces between the wall located at the front of the house and the house. Please revise impervious surface calculations accordingly. Nc- N �, 5) Please clearly show and label (including year constructed) the wall along the front of the house. 9 '76 6) Please clearly label where the existing patio (including year constructed) was. 1774 DATE E-MAILED 3/14/2011 SFP 4 201'1 111 City of Edmonds BLD20110152 121 5 TH AVENUE NORTH EDMONDS, WA 98020 - (425) 771-0220 FAX(425) 771-0221 Website: %%-\vw.ci.edrnonds.\\,a.us : r PUBLIC WOKK DEPAR I MLN I Planning - Building - Engineering Engineering Plan Review Comments a. If additional area was added to the patio please revise the impervious surface calculations accordingly. KI'"X - b. If new patio is in exact location as the existing please note as such on the plans. NO&16 7) On the first page of the Site Plan a rockery is sho n, however, on the second page a retaining wall is shown. W;11 a. Please revise the Site Plan to be consistent on each page. b. If the retaining wall r ockery are proposed please label as such. Please note the height of the proposed wall / rockery. c. If the retaining wall / rockery are existing please label as such. 8) Show the location of the side sewer from the sewer main to the house (see attached). 9) Please show the location of the water service line from the water meter to the house. Please resubmit 3 copies of the revised traffic control plans and associated documents with a written response to each item to an Engineering Technician. Please contact me at 425-771-0220 ext 1321 or b-,- e- mail at raci.edmonds.wa.us if you have specific questions regarding these plan corrections. DATE E-MAILED 3/14/20111 PAGE(l) PLANNING DATA STREET FILE SINGLE FAMILY RESIDENTIAL Name: d Date: q/7 Site Address: 56 S_ C/( f c Plan Check Project Description: ll)a,-�io �q c u (o oJ-f 4'_� Reduced Site Plan Provided: Y S NO) Zoning: Map Page: Corner Lot: (YES 00 Flag Lot: (YES 00 Critical Areas Determination 9. 6c ��_2_ I _�& A a _L C-4— ti�udy Required 0 o (on A, 6, YS waiver Atl -7 1 (C � rP- O'D SEP�Lerrmnipation: E e t N ed (for over 500 cubic yards of grading) 0 Fee 0 Checklist 0 APO List with notarized form Required tbacks Street: '2_0 Side: 57- .33)RU: I Actual_Setback5 Street: Side: Side: -3 =Rear: S_ El Detached Structures: El Rockeries: Fences[Trellises: El Bay Windows/Projqcting Modulation./ 4— s 0 N��tars/Deck: ffn U I (J 6uildin Height -5-C-M C14C Datum Point: Datum Elevation: (5QC_ 16. w. q0. Maximum Height Allowed: Actual Height. Other Parking Required: Parking Provided: Lot Area: Maximum Lot Coverage: 35% Proposed: Lot Coverage Calculations: ADU Created: (YES / 00 Subdivision: Legal Nonconforming Land Use Determination Issued: (YES iO3 COMMeRtS Plan Review By: 07 4P5?� 7/2 t Plan" Data Form 04 - I. I -06-doc 0 City of Edmonds Critical Area Notice of Decision Applicant: PD - d(�\� Property Owner: Critical Area File #: 200 C� — 00 S- -2- Permit Number: Site Location: Parcel Number: 006 96--s-0000 0 zoo Project Descriptio n: 4/Lv� F—I Conditional Waiver. No critical area report is required for the project described above. I . There will be no alteration of a Critical Area or its required buffer. 2. The proposal is an allowed activity pursuant to ECDC 23.40.220, 23.50.220, and/or 23.80.040. .3. The proposal is exempt pursuant to ECDC 23.40.230. Erosion Hazard. Project is within erosion hazard area. Applicant must prepare an erosion and sediment control plan in compliance with ECDC 18.30. [�—Critical Area Report Required. The proposed project is within a critical area and/or a critical area buffer and a critical area report is required: A critical area report has been submitted and evaluated for compliance with the following criteria pursuant to ECDC 23.40.160: I The proposal minimizes the impact on critical areas in accordance with ECDC 23.40.120, Mitigation sequencing; 1 2. The proposal does not pose an unreasonable threat to the public health, safety, or welfare on or off the development proposal site; 3. The proposal is consistent with the general purposes of this title and the public interest; 4. Any alterations permitted to the critical area are mitigated in accordance with ECDC 23.40.110, Mitigation requirements. 5. The proposal protects the critical area functions and values consistent with the best available science and results in no net loss of critical functions and values; and 6. The proposal is consistent with other applicable regulations and standards. F-I Unfavorable Critical Area Decision. The proposed project is not exempt or does not adequately mitigate its impacts on critical areas and/or does not comply with the criteria in ECDC 23.40.160 and the provisions of the City of Edmonds critical area regulations. See attached findings of noncompliance. Favorable Critical Area Decision. The proposed project as described above and as shown on the attached site plan meets or is exempt from the criteria in- ECDC 23.40.160, Review Criteria, and complies with the applicable provisions of the City of Edmonds critical area regulations. Any subsequent changes to the proposal shall void this decision pending re -review of the proposal. U Conditions. Criti cal Area specific condition(s) have been applied to the permit number referenced S— above. See referenced permit number for specific condition(s). '/�� o�q Reviewer J 4 �Z�41t-T-- Signature Ll Date Appeals:. Any decision to approve, condition, or deny a development proposal or other activity based on the requirements of critical area regulations may be appealed according to, and as part of, the appeal procedure, if any, for the permit or approval involved. Revised 12/16/2010 City of Edmonds BLD20110152 121 5TH AVENUE NORTH EDMONDS, WA 98020 - (425) 771-0220 FAX(425) 771-0221 Website: www.ci.edrnonds.wa.us PUBLIC WORK DEPARTMENT Planning - Building -Engineering Engineering Plan Review Comments Permit Application #: BLD20110152 Date: March 14, 2011 Project Name/Address: Bodine — 505 Paradise Lane Contact Person/Address, Fax or E-mail: Mail Only Reviewer: JENNIFER LAMBERT Division: ENGINEERING During review of the subject submittal, it was found that th� following information, corrections, or clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at our website: www.ci.edmonds.wa.us under City Government / Development Services Department Engineering Division then scroll down to Handouts: 1) Please show the impervious surface calculations as shown below, on the Site Plan: Line Type Area (square Feet) 1. Exempt Exempt Non -Exempt 2. Replaced 3. New Total Replaced +New (Non- 4. I Exempt) I (add numbers in blue b �e MAY 18 2011 BUILDING DEPARTMENT CITY OF SDMONDS 2) Please show the year of construction on the Site Plan as shown in the sample Site Plan provided. 3) Please fill out the stormwater worksheet provided in handout #E72 (attached) and submit with plans. 4) Please show all impervious surfaces on the Site Plan and the year constructed. It appears that there is some impervious surfaces between the wall located at the front of the house and the house. Please revise impervious surface calculations accordingly. N'o N 0 5) Please clearly show and label (including year constructed) the wall along the front of the house. 1976 6) Please clearly label where the existing patio (including year constructed) was. DATE E-MAILED 3/14/2011 PAGE(l) STREET FILE City of Edmonds BLD20110152 121 5' AVENUE NORTH EDMONDS, WA 98020 - (425) 771-0220 FAX(425) 771-0221 Website: www.ci.edmondsma.us PUBLIC WORK DEPARTMENT Planning - Building - Engineering Engineering Plan Review Comments a. If additional area was added to the patio please revise the impervious surface calculations accordingly. Q'i4x b. If new patio is in exact location as the existing please note as such on the plans. NONF, 7) On the first page of the Site Plan a rockery is sh or is shown. aFi4,q� '/�7n; however, on the second page a retaining wall a. Please revise the Site Plan to be consistent on each page. - b. If the retaining wall / rockery are proposed please label as such. Please note the height of the proposed wall / rockery. c. If the retaining wall / rockery are existing please label as such. 8) Show the location of the side sewer from the sewer main to the house (see attached). 9) Please show the location of the water service line from the water meter to the house. Please resubmit 3 copies of the revised traffic control plans and associated documents with a written response to each item to an Engineering Technician. Please contact me at 425-771-0220 ext 1321 or by e- mail at oennifer.lambert(ii),ci.edmonds.wa.us if you have specific questions regarding these plan corrections. DATE E-MAILED 3/14/2011 PAGE(l) NELsON GEOTECHNicAL —'e'0'00'N G A AssocIATES, INC. GEOTECHNICAL ENGINEERS & GEOLOGISTS. Main Office 1h Engineering -Geology Branch 17311 — 135 Avenue NE, A-500 437 East Penny Road Woodinville, WA 98072 Wenatchee, WA 98801 (425) 486-1669 FAX (425) 481-2510 (509) 665-7696 FAX (509) 665-7692 (425) 337-1669 Snohomish County I RE 8 U B September 9, 2009 ii �EP 2 12009 S REET FILE %RNG MV OFM9N Mr. Allan Bodine c/o Steve Bodine Bodine Construction Company, Inc. 6009 — 212"' Street SW Lynnwood, Washington 98036 Geotechnical Plan Review Letter Bodine Residence Foundation Repair Edmonds, Washington NGA File No. 791708 Dear Mr. Bodine: This letter presents the results of our geotechnical engineering review of the plans for the foundation repair at your residence located at 505 Paradise Lane in Edmonds, Washington. INTRODUCTION We have heen requested by Jim of Bodine Construction to provide a plan review letter for this project. The northeastern comer of the existing house has experienced significant settlement. The residence is situated near the top of a steep slope and undocumented fill was encountered in our explorations adjacent to the footings. The project plans call for the installation of pin piles under the effected portion of the residence to transfer the foundation loads through the fill to the underlying competent native soil. We previously prepared a geotechnical report for the project titled "Geotechnical - Engineering Evaluation — Bodine Residence — Edmonds, Washington," dated July 18, 2008. For our use in preparing this plan review letter, we have been provided with plans titled "Foundation Repair — Bodine House — 1220 Paradise Lane — Edmonds, WA 98020;" prepared by Criterium Pioli Engineers, dated May 29, Geotechnical Plan Review Letter Bodine Residence Foundation Repair Edmonds, Washington September 9, 2009 NGA File No. 791708 2009; and an undated detail titled "Plan," showing foundation and pin pile details. We were also provided with a letter titled "Plan Check: 2009-0403 — Project: Foundation Repair — Project Address: 505 Paradise Lane," prepared by the City of Edmonds, dated July 7, 2009. The City has requested a geotechnical plan review for the project. PLAN REVIEW AND CONCLUSIONS We have reviewed the geotechnical aspects of the provided plans, and found the plans to be in general compliance with our recommendations as presented in the geotechnical report. The structural calculations indicate axial pressures of less than two tons per pile, which is in accordance with the recommendations in our report. In the geotechnical report, we recommended that the site slopes be protected from erosion. We recommend that erosion control and slope protection measures be implemented during and after construction of this project. CLOSURE Provided that the recommendations in the geotechnical report dated July 18, 2008 and in this letter are followed during construction, the areas disturbed by construction should remain stable. Therefore, the risk of damage to adjacent properties from soil instability should be minimal, and the proposed grading and development should not increase the potential for soil movement. NGA should be retained to provide special inspections for pin pile installation and consultation services during construction to confirm that -the conditions encountered are consistent with those indicated by the explorations, to provide recommendations for design changes should the conditions revealed during the work differ from those anticipated, and to evaluate whether or not earthwork activities comply with contract plans and specifications. no M NELSON GEOTECHNICAL ASSOCIATES, INC. 0 Geotechnical Plan Review Letter Bodine Residence Foundation Repair Edmonds, Washington September 9, 2009 NGA File No. 791708 We appreciate the opportunity to provide service to you on this project. Please contact us if you have any questions regarding this letter or require further information. Sincerely, NELSON GEOTECHNICAL ASSOCIATES, INC. LOA Bala Dodoye-Alali Project Geologist Michael D. Rundquist, PE Project Manager BD:MDR:kmn Three Copies Submitted NELSON GEOTECHNICAL ASSOCIATES, INC. It— M, s Z3 �00 t� . ...... WT. Jr L., r�t_! lb is- OR fA Mf i, vh Rim-, ki AV tA � r, 73 W1, �4q k, IL , , �_,Wy 'N � rzt"R_