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20020815.pdfRECEIV74 PERMIT EXPIRES 7 CITY OF EDMONDS USE PERMIT ZONE NUM.ER2'�)/ �14 CONSTRUCTION PERMIT APPLICATION OWNER NAME/NAME OF BUSINESS 7-a SOITEIAPT, ADDRESS -70 Martin and Lourdes Schmitz PLAT NAMEiSUBDIVISION NO, NO. MAILING ADDRESS LID FEE S 70 Northstream Lane CITY PUBUC RIGHT OF WAY PER OFFICIAL STREET MAP EXISTING — PROPOSED — zip TELEF ONE Edmonds WA 8020-2636 �25-778-2086 REOUIRED DEDICATION— FT METER SIZE LINE SIZE NO, OF FIXTURES PAV REOUInED NAME 1wi— iams Architects James 0. Williams, AIA L ADDRESS YES 0 NO 0 I R MARKS 1.307 Blanchard Street TELLER DIE — CITY zip OWNERiCONTRACTOR RESPONSIBLE FOR EROSION CONTROUDRAINAGE Not.,41,114.s e'vyl;o—-71 Seattle WA 98121 206-448-4076 1C)II /0-- . 45/"04 NAME - - I _. kll /n. / H/� �- _(L1 ADDRESS Ae, SF-, 77 REVIEWED BY DATE CITY TEI)Ij7� STATE LICENSE NUMBER EXPIR 10 E K VAgNORCU SHOA7\1011 A11110, INSPEC!ION IPBOND FS. G .TED -0 ' " YES 0 NO p PROPERTY TAX ACCOUNT PARCEL NO. SERA REVIEW COMPLETE . ION AREA H.I..T ALLOWED 111.P.SED ALLOWED PROPOSED 5125-000-018-00 ��T EXI I x -4, 0 NEW RESIDENTIAL 0 PLUIAWN.I.E.. LOT COVE RAGE ALLOV��POSED REQUIRED SETBACKS PT) PROPOSED SETBACKS LET.) FRONT,,ZZ, READ FRONT P SIDE REAR CD ADDITION 0 COMMERCIAL 0 COMPLIANCEOR CHANGE OF USE PARKING LOT AREA PLJNNING REVIEV ED BY DATE 0 REMODEL C:] A C] SIGN IIEO,4_�IDED ' REPAIR GRADING CYOS 1ENG1 ERAH' G I X FT) DEMOLISH C3 TANK OTHER 0 GARAGE CARPORT Dd R�,`CK�y RENEWAL r (TYPE OF USE. BUSINESS O�RACTIVFFY) EXPLAIN: NUMBER OF 0 STORIES2 NUMBEROF DWELLING UNITS CRITICAL AREAS NUMBER OEI 'troaM tn damage and. makp Iikp prevent property hpforp ProsiOn.- At%aGged 4 I)es4q-p Rrwram dejail. and. ac drawings (5 total SLOPE -,� THIS PERMIT AUTHO IZES ONLY THE WORK NOTED. THIS PERMIT COVERS WORK TO I: BE DONE ON PRIVATE PROPERTV ONLY. ANY CONSTRUCTION ON THE PUBLIC DOMAIN (CURB$, SIDEWALKS, DRIVEWAYS, MAROUEES, ETC.) WILL REQUIRE SEPARATE PERMISSION. PERMIT APPLICATION: 160 DAYS PERMIT LIMIT'. I YEAR , PROVIDED WORK IS STARTED WITHIN 180 DAYS SEE BACK OF PINK PERMIT FOR MORE INFORMATION _;RPUCA.T ON BEHALF .1 HIS OR HER SPOUSE, HEIRS, ASSIGNS AND SUCCESORS w IN INTEREST. AGREES TO DEMNIFY DEFEND AND HOLD HARMLESS THE CITY OF 2 EDMONDS. WASHINGTON i : S OFFICIALS, EMPLOYEES, AND AGENTS FROM ANY AND ALLCLAIMSFORDAMAGES FWHATEVER NATURE, ARISING DIRECTLY OR INOIRECTLY FROM THE ISSUANCE OF T IS PERMIT. ISSUANCE OF THIS PERMir $HALL NOT BE DEEMEDT MODIFY. WAIVE OR REDUCE ANY REOUIREMENT F ANY CITY ORDINANCE THATIHAVE READ THISAPPILGATION: THAT THE INFORMATION E.A.KS GO ROUP A ��-UG' 'G ... PAN�e SPECIAL INSPECTOR RED JARIA REGUI C3 YES __ OCCUPANT LOAD REMA KS PROGRESS INSPECTIONS PER USC 108/FINAL INSPECTION REO'D I VALUATION FEE N -K FEE BUILDING rMECHANICAL PLUMBING GRADINGIFILL 3�SURCHARGE q ENO, U.-IE-tAFFEs END NE _,EC ON FEE ING FVgBTcTtON Ff PLAN CHECK D , EP 0 S - IT 19ECEIPT IHEREBY ACKNOWLEDGE GIVEN 15 CORRECT, AND THAT I AM THE OWNER, OR THE DULY AUTHORIZE. A. ENT 01 Att-LitA]l IUIM A—W - NO THE OWNER. I AGREE TO G.DPI WITH CITY AND STATE LAWS REGULATI 'G.NS'EUG CALL TIN, IPPI1111- 11 - I P11-1 11119— BY P DON; AND IN GOING THE WORK AUTHORIZED THEREBY, NO PERSON WILL BE EM LOYED IN VIOLATION OIF' THE LABOR CODE OF THE STATE OF WASHINGTON RELATPING TO FOR INSPECTION BH,Mi,E Oft,1 Fr Ih., D.,,Fj, -d .1. P..d, 4- .... p,,Fk,Pdg0d,� sPaFu Ptov,d -0 WORKMENS COMPENSAHO INSURANCEANORCW1827, 1 (425) 0 C11 IG I - P p- I _ESIGIAD / I r I, _ '.ELEASEO BY DATE 7A7E-NTION E XT 1333 16� J_ I IT IS UNLAWFUL TO USE OR OCCUPY A BUILDING OR STRUCTURE UNTIL 77. A FINAL INSPECTION HAS BEEN MADE AND APPROVAL OR A CERTIFI- OMGNALL� - YELLOW INSPECTOR >( CATE OF OCCUPANCY HAS BEEN GRANTED. UBC SECTION 109 FAX PINK . OWNER . GOLD - 5198 0 0 M M 0 80 c -j C X M M Z 0 -n 'n M M a 0 0 M C co c ED Q 0 Z 7-1 Z Z 0 M UMSWENSON SAY FAGtT A STRUCTURAL ENGINEERING CORPORATION March 7, 2002 Martin Schmitz 870 Northstream Lane AR, 4 Edmonds, WA 98020 BUILDING DEPT. RE: Schmitz Bridge & Residence (870 Northstrearn Lane) Dear Martin, I visited 870 Northstream Lane on March 6, 2002 to inspect erosion along the stream bank in front of your house and to determine the structural consequences of the erosion on both the bridge providing access to the house and the house structure itself The stream drops in elevation through a series of small dams along the length of the property. The majority of erosion occurs at the bottom of the drop which coincides roughly with the bridge support piers. The heaviest erosion appears to be occurring directly adjacent to the north piers. Without further investigation into the original construction of the piers (i.e. depth, size and soil bearing condition) it is difficult to determine how much the current erosion has weakened the bridge support structure. It is evident, however, that continued erosion of the bank will most likely lead to an undermining of the foundation system with serious structural implications. Erosion of the south stream bank appears to have contributed to the settlement and undermining of the house addition and the patio slab at the northern end of the house. Again, if the erosion of the bank is not addressed, the settling of the house and patio and associated damage will likely continue. Specific recommendations for stabilizing the stream bank and limiting future erosion should be provided by a geotechnical engineer. To support the undermined house addition, I recommend installing a series of steel pin piles along the existing perimeter foundation. Similarly, the patio slab can be stabilized by pouring a concrete grade beam along the north perimeter which spans between driven pin piles. Typically, pin piles are 2 — 3" diameter steel pipes driven into the ground with a 90 lb. jackhammer and spaced at 6 — 8' on center. The depth the piles need to be driven varies depending on the type of soil they are driven into. Finally, I recommend further investigation into the existing condition of the bridge support piers to determine what, if any, corrective measures should be taken. As -built information for buildings and bridges can often be found at the local building department. Please call with any questions or if you need anything else. Thank you, SWENSON SAY FAGtT A Structural Engineering Corporation Scan O'Neill Cc: Jim Williams — Williams Architects �Ib P11 F 2124 Third Avenue - Suite 100 -Seattle - WA 98121 Z 0 m q -n M M 0 -40 C 3: m JD C!2, ;j "n n �u m m 0 0 0 C m 0 Z ;U Z Z 0 m NELSON GEOTECHNICAL ----NGA AssociATEs, INC. N A GEOTECHNICAL ENGINEERS & GEOLOGISTS 17311 -135' Avenue NE, A-500 Snohomish County (425) 337-1669 Woodinville, WA 98072 (425) 486-1669 Fax (425) 481-2510 Wenatchee/Chelan (509) 784-27,96 March 25, 2002 Mr. James Williams, AIA RECEIVED Z� Williams Architects 307 Blanchard Street 4 2�'�,92 APR Seattle, Washington 98121 BUILDING DEPT. M N Geotechnical Services and Proposal C In Schmitz Residence Streambed Restoration, Residence Stabilization, 0 C 01 and Access Bridge Support Evaluation In 870 Northstrearn Lane Edmonds, Washington Z NGA Proposal No. P2321 Dear Mr. Williams: 0 -Mn We are pleased to submit this proposal for geotechnical services and preliminary opinions of existing m In conditions at the Schmitz residence and property located at 870 Northstream Lane in Edmonds, 0 r- 0 M �p" Washington. The intent of these services would be to evaluate e current surface and subsurface th conditions, present our opinions concerning proposed site restoration and improvements, and to provide m 0 Z recommendations for geotechnical stabilization techniques. INTRODUCTION In your letter to us, dated February 22, 2002, you discuss the project and the requirements of the City of Edmonds for a building permit. We understand that theowner wants to clean up the existing streambed Z and restore the strewn using weirs and bank stabilization techniques. To proceed with this work, the City m is requesting geotechnical input regarding stability within and around the site. This includes; 1) addressing whether the addition to the residence has settled since it was built and how the structure has been affected, 2) if the soils supporting the bridge piers are satisfactory, 3) if the streambank is stable enough to support the house addition foundations, and 4) if the strewnbank soils are eroding. Separately, we understand that the owner is requesting geotechnical input regarding improvements to the bridge. MC�Aclppv Proposal for Geotechrucal Services Schmitz Residence Streambed Restoration, Residence Stabilization, and Access Bridge Support Evaluation 870 Northstream, Lane - Edmonds NGA Proposal No. P2321 March 25, 2002 We met with you and the owner on site, discussed the affected areas, and provided our preliminary observations, opinions and recommendations. You have requested this letter/proposal to present our preliminary findings, and our proposed geotechnical services for the project. The affected site area consists of the existing residence addition, and the surrounding streambank and stream areas, which have been affected by past erosion and unstable slope conditions. We understand that the area has been affected over the last few years, and concerns regarding proposed stream restoration and future stability are primary issues. PRELMNARY OBSERVATIONS We were contacted to observe the existing site conditions and provide our opinion and recomniendations for potentially required geotechnical input. We observed that the existing creek is eroding the strearnbed, and the adjacent slopes. Prior weirs in this area have failed, and lie fallen. The stream water has undermined these areas, and the locally adjacent slopes, to a condition where surface sliding and slumping has occurred. We also observed the area of the existing bridge foundations, located on the slopes above the strearn. One area of stream erosion and slumping of the adjacent stream slope is near and below the northern bridge foundation. These foundations are considered to be the original bridge footings. We could not determine depths of the footings, or whether continued strearnbed erosion will impact their stability. We also observed the area of the residence addition, concrete patio, and the slopes between the residence and the stream. It appears that the addition foundations have differentially settled The slopes since being constructed. The concrete patio also shows significant differential settlement, between the residence, its improvements, and the stream also appear to have settled, and show some signs of downslope movement. These slopes appear to consist of fill, probably placed during past construction within and around the residence area. Erosion of the streambed and adjacent slopes appear to have exacerbated the settlement and downslope movements. The residence addition, concrete patio, and slope areas underlain by fill could put these affected areas at risk of future settlement, distress and other unknown detrimental conditions. We are also concerned about the exposed structure foundations and the existing fill. Short-term and long- term slope stability is highly questionable, based on our initial observations. Should continued downslope movement, erosion and/or settlement occur, a significant risk to the integrity of the area should be expected. NELSON GEOTECHNICAL ASSOCIATES, INC. Z 0 0 4 -n Vi I , ti�� in a iz,, M 0 C-) C M m O"n "n in M 0 0 Fn co C Cl) mo Z Z 9 0 in Proposal for Geotechnical Services Schmitz Residence Streambed Restoration, Residence Stabilization, and Access Bridge Support Evaluation 870 Northstream Lane - Edmonds NGA Proposal No. P2321 March 25, 2002 Preliminary information can be made available to you and your design team within one week after the fieldwork is completed. A report documenting our opinions and recommendations would be issued about two weeks after our explorations are completed. Please notify us if a quicker time schedule would be z needed. 0' Prior to our beginning the fieldwork, we require a retainer equal to about one-half of the estimated costs to perform the study. As soon as we receive this signed agreement, and your retainer fee of $1,900, we will begin our field operations. M & 0� 0 AUTHORIZATION TO PROCEED m m We appreciate the opportunity to submit this proposal, and are looking forward to working with you on Z this project. If this agreement meets with your approval, please sign in the spaces provided below and return one copy of this proposal to serve as your authorization for us to proceed. n 01 0 ME Sincerely, MR 0 NELSON GEOTECHNICAL ASSOCIATES, INC. 0 C ca� mc)� Z David L. Nelson, PG Principal DLN:Inm Z 0, CLIENT ACCEPTANCE: 0 m This proposal is accepted by: Signature ate Title Company Attachments: February 2002 Standard Fee Schedule and General Conditions NELSON GEOTECHNICAL A SSOCIATES, INC. 1,-,/15/2002 11:25 2064483473 t�ILLIAMS ASSOCIATES ),_,,,/,,,PAGE 02 ef5!15PM FRW Wr)FW MILLCREFK 20 OCT 14 '02 HYDRAULIC PROJECT APPROVAL RCW 77.55,100 - appeal pursissel to Chapter 34.05 RCW Isola Mill C-1, llouk"'d Mill C—k'-.-h1et 91012 Man r 14 .2007, this MydrAubc riolect: Approval (liPA), which now 9upersede-11 previntif At tile jetiu.0 -1, Jim William., October 10 I for his project, is a time extension ofthc original 11PA issued fcbfuary 5, 2002- 'T 0 C 'TPACM& AUTHO Williams Ambitacts 1,13rim & Lourdes Schmitt LS ATTENTION. lim Williams ao' Lane h' 307 Blanchard Street E7dmonds, =h',,15tills 98020-2636 Seattie, Washington 98121 (206) $16-8471 206% AAR.AnIA PROJECT DESCRIPTION: Rebuild failing retaining wall and weirs to protect resldencc-� 1 TION,. 870 Northstrearn Lane, Fdaft0ndS. PROJECT LOCA 114 TOW-4s"IF RANU couNly a WRIA W'kTERMQM-y TROUTA 13 27 North 03 Ean Sroh�rrsh 1)%.000li North Sire— C—k Pullet Sound NOTE- This project is proposed!n a location where fish passage is not aconcem, The project may begin Immediately and shall be completed by No"nitser30,2002 C ic eroding bank. 2, Bank protectiou orkshall be restricted to work necesiarY 10 Preto t d Tl al waterward oftlic ordinary high Nvater line shall be restricted to the I inimum 1 Placement of bank protection materl a5ay, to protect the toe of tile bank. amount niece 4� Thc too shall be installed to protect the intogrity of bank protection matterial. Batik sloping shall be accomplished in a inatmer that avoids relebse of overburden material into the water Overburden material resulting from the project shall be deposited so it will not enter the water 6� Batik protection material shall be clean. angular rock. and shall be installed to withstand 100-) car peak flowq River gravels or other round cabbies shall not be used U exterior arevicir. ion material shall no, constrict the flow and cause any appreciable increase (net to exceed 0.7 feel) in Bank protect ulcl-xvide scour, and shall be aligned to cause the least backwater elevation (calculated at the I 00.year flood) or chat effect on the hydraulics ofthe stream, g ta i. Rank protection material shall be placed in a mimmor to avoid damage to existing ve a tio �i� '111L work shall be done in the dry or in Isolation from the sirearn flow by the installation ofa bypass flume or culvert. or bv - area pumping the stream flow around the war), COVY z 01 0 0M C rn 0 a 80 C � r. ;1' M M >C Z' E: 0 -n -4 X M M 0555 0 o R C 0) r. ri) M 0 z A z z 0 0 M 10/15/2002 11:25 2064483473 WILLIAMS ASSOCIATES PAGE 03 OCT 14 '02 05:16PM FROM WDFW MILLCRM P, 3-4 HYDRAULIC PROJECT APPROVAL silt, Fi.%.ld W'101' RCW 77-55-100 - APPCRl Pursuant to Cbapter 34.05 RCW in" 16016 �111 C1.01 0.01—d )=am M141 C... i v. Equipment used for this project may Operate below the ordinary high water line, provided the drive mechanisms tracks, tires, ate.) $hall not enter or operate below the ordinary high water line. er ftom entering tilt stream, These may include, bill 1 Crosioll control methods $hall be used to prevent silt -laden wat -fibed buriap bags or are not limited 10, straw holes, filter fabric, temporary sediment ponds, chcok dams ofpca gravel hing Ofcxor)SM arew, other material. and/or immeditiu! mule ;2. Ifiligh flow conditions that may cause siltation arc encountered during this project, wod< shall stop until the tlo� subsides. -draulic fluid, ftesh cement, sediments, atilinicut- Txtrsma care shall be taken to ensore lhat no petroleum Products, h) rials are allowed to enter or leach into the strewn. laden %vater, chemicals, or any other toxic or deleterious mate SEPA: B�.empt, no other non-exompt permits required. APPILICATIONACCEPTEDt Octoberl4.2002 ENFORCEMENT OFFICER: LambeMO41 [P31 for Dim tar l'ony Oppermatin (425) 379-2309 WDFW Area Habitat BiolOe'st I fiENER&LEW—VISMS I his gydraulir Project Approval 04PA) pertains only to the provisions ofthe Fisheries Code (PCW 77.55 - f0fintriv RCW 75,20). Additional authorization from other public ogcllcie� may be necessary for this project a c ater(s) This HPA shall be available on the job site at all times and all its provisions followed by the permirlee nd op r perfbrining the wo& This HPA does not authorize tmsPgAs- The person(s) to whom this HPA is issued may be held liable for any loss or damage to fisli lite or fish habitat which re,uhs fi om ftilaro to Comply with the provisions of this 14PA. F�tilurc to comply with the provisions Of this Hydraulic Project Approval could result ill a civil PCOBIrY Of up 't' one hundred dollars per day or a gross misdemeanor charge, possibly punishable by fint and/or imprisonment, AU H?As issued pursugint to RCW 77.55. 100 or 77�55,200 art subject to additional restri-tions. conditions or revocation ir the Department ofFish and Wildlife determines that new biological Or Physical information indicates the need for 3.c action, The permittee his the, right pursuant to Chapter 34.04 *pCW to appeal such decisions, All HPAS issued Pursuz" to lkCW 71.55 1 lo may he modilled by tbo Department of Fish and Wildlife due to changed c3nditi011,� after zorisullatlo with the permitice PROVIDED H0WFVFR, that such modifications shall be subject to appeal to the Hydraulic Appel 14nard established in RCW 77.55.170. Flage 2 of 3 h z 0 0 to a M C M 0 -040 M In 03 M 0 0 Fn C V) MCI) M 0 z 0 0 M 10/1-5/2002 11:25 2064483473 l4ILLIAMS ASSOCIATES PAGE 04 OCT 14 '02 05:17Prl FPCM WVF�j MILLCREEK P, 4 - 11 HYDRAULIC PROJECT APPROVAL VNdlif, ::=.f RCW 77.SSI80 - appeal pursuant to Chapter 34.06 RCW 't F"" "a Reliail 4 Offitt ,6014 C�ijj C% 91A W.W WARN AUEA"-- "-N—tR-AhMEQ&HA= IF- yoU WISH TO APPEAL A DENIAL OF OR CONDITIONS PROVIDED IN A ITYDRAULIC PROJECT APPROVAL, THERE ARE rNFORMAL AND FORMAL APPEAL PROCESSES AVAILABLE X INFORMAL APPEALS (WAC, 220-11 o.340) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCw 77.55.100, 77.53,110. 77.55.140, 77.55190, 77.55.200, and 77.55.290. A person who is aggrieved or mlv"sclY affected by the following Departinent actions may requestan informal r—i0l of- (A) The denial or iss"nec Ofa HPA, or the conditions or provisions made part of a HPA. or (B) An order imposing civil Penalties, is recommended that in aggrieved party contact tile Area Habitat Biologist and discuss the concerns. Most problems are resolved at this level, but ifnOt. you may a;tyato your concerns to his/her supen1sor, A request for an INFORMAL REVIRW shall be in WRITING to the Department of Fish and Wildlife. 600 Capitol Way North, Olympia, Waiihington 98501-1091 Puid shall be RECEIVED by the Deparunent within 30-days of the denial or issuance of a HPA or receipt Of 0" Order imposing civil penalties. The 30-day time requirement may be stayed bv tile Department if negotiations aft Occurring between the aggrieved party and the Area Habitat Biologist and/or his,her -upervisar� 'rho Habitat Protection Senues Division Manager ., his1her designee shall conduct a �cvicw and c not s revomincrid a decision to the Direct0j, or its designee. Ifyou &I atisfied with the results of %his informal appeal, .1 forma) appeal may be filed. FORMAL APPEALS (WAC 220-1 to.350) OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 77,55.100 OR 77,55.140: ) o vest an f ri al re A person who is aggrieved or adversely affected by tile following Deputiment actions ma r q 0 n view (A) The denial or issuance of a HPA, or the coneitions or provisions made part of a HPA; (3) An order imposing civil Pen"Ities� Or (C) Any othet"AgevOYRctlOn" for which an hdjud'cztivc proceeding is required under the ,�Ldministrxtive Procedure Act, Chapter 34.05 RCW. -Unem of Fish and Wildlife. 600 Capitol Wft� A request for , f ORMAL APPEAL shall be in WRITING to the E)cpw OR FORMAL APPEAL" and North, Olympia. Washington 9850 1-1091, shall be plainly jobelcd as "REQUEST F c shall be RECEIVED DURING OFFICE HOURS by the DaparTment within 30-days fflicDcliSt"nentActiOn that's being 'Me time period for requesting a formal appeal is suspended during con%ideration of a timely informal appeal, if there has been or informal appeal, the deadline for requesting a formal appead shall be dirys of the date of the Deporimeat's written decision in response to the Infonnal appCa)' C. FORMAL APPEALS OF DEPARTMENT ACTIONS TAKEN PURSUANT TO RCW 77.55.110, '7 55.200, 77.S5.230, or 77.55.290: n A person, who is aggrieved or advetselN, aMeted by the denial or issualice of a IDA, or the conditions or provIS10 5 made pan of a 14PA may request a formAl appeal. The request for FORMAL APPEAL shall be in WRITINQ to th, Hydraulic Appeals Board per WAC 259-04 at En,,ircrimental Hearings Office, 4224 si%th Avenue SE. Building Two . Rowe Siy, Lacey, Washingion 98504: telephone 360/459-6327. FAILURE TO APPEAL WITHIN THE REQUIRED TIME PERIODS RESULTS IN FORFEITURE OF ALL APPFAL RIGHTS. IFTHERE IS NO TIMELY REQUEST FOR AN APPEA6,114E DEPARTMENT ACTION SHALL BF. VINAL AND UNAPPEALABLE. Page 3 of 3 z 0 0 M M 0 -40 OC M 0 -n M In . 06, Fn C 0) In 0 z z 0 M N rthstream 0 Stream maintenance M Martin Schmitz and Mrs. Lourdes Schmitz j5 870 Northstream Lane Edmonds, Washington cm, M0 0 Date: October.16, 2001 M MR CO, F 0 RECEIVED cc: 0.0 OCT 2 6 2001 DEVELOPMENT SERVICES OTFL. C ITY OF EDMO NOS Architect: Williams Architects, AIA Z 307 Blanchard Street 0; M Seattle, Washington 98121 Landscape Architect: Glenn Takagi, ASLA 18550 Firlands Way N. shoreline, Washington 98133 CITY COPY WILLIAMS ARCHITECTS IABLE OF —CONTENTS D-Qr-!JMENM RELAIED TO THIS SUBMITTAL Table of Contents z summary of Proposal Ri Design Program COPY of Development Application from the City of Edmonds in C 0 Attachments: M 0 -10 0 C IV, Drawings of existing site, profiles (2 pages) Drawings of Maintenance as Proposed (2 m M COPY of Plat Map pages) Z Photographs identified following plat map > mm 0 C: in M z z M 0 WILLIAMS MUM CTS PLANNING PROJECT ADMINISTRATION CONSTRUCTION MANAGEMENT 307 BLANCHARD STREET SEATTLE, WASHINGTON 98121 (206)448-4076 FAX 1206) 44 8-3473 Summary of Project The owners of this property located at 870 Northstream Lane contacted the Z Architect in the summer of 2001 regarding concerns with the stream that crosses on their property to the North of their residence. Inspection of the existing conditions and ?5 the attached report (Design Program) prepared by the Architect and Landscape Architect resulted in developing a staged process to accomplish the goals of the owner. As a result, the owner expressed the desire to undertake measures that would maintain vi --i 0 the stream to the condition that it was in when they purchased the home. m C j,� M 0 The owners are very respectful of the history of the stream, and value it's 80 presence highly. Their intention is to restore, not to improve. Evidence remaining in the stream indicates previous methods were undertaken to maintain the flow and Im Z jo --i ; I profiles, and, storms and time have deteriorated or changed those conditions. The 2 methods and means proposed give major consideration to City for permitting and Community concerns of inconvenience. Initial contact with the City indicates a 0 favorable agreement is possible under special conditions, and contacts with immediate n neighbors is also favorable (the property to the East is vacant and undergoing renovation, and the owner to the West is a considerable distance away). 1111 m 0 0 Fn Initial contact with the City of Edmonds indicates that a staff review of the C: (n C CD request is required. Based on the results of the review and recommendations, the Q 0 Z�, owner is prepared to proceed with the work in a staged process. The owner is aware that delaying the remedial restoration of the flow of the stream may cause advanced ;U decay of the slopes supporting the foundations of the home, thus resulting in more costly repairs as time progresses. Z The request is to proceed with the maintenance as soon as possible, and the owner has obligated themse Ives and their consultants to provide as much assistance to Z 0 the City as possible in obtaining approval to proceed. Zi 0 PIT The attached photographs and drawings attempt to display the existing conditions and display the proposed maintenance, These photographs were taken during the mid -summer of 2001. Since that time, two major short duration rain storms have changed the conditions which would be recognizable with a site visit. Martin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects VALLIAMS ARCHITEaS PLANNING PROJECT ADIWNISTRAIION Martin and Lourdes Schmitz CONSTRUCTION MANAGEMENT Design Program- 6 Pages 307 BLANCHARD STREET SEATTLE, WASHINGTON 98121 Client Name: Martin and Lourdes Schmitz, 870 Northstream Ln., Edmonds, WA 1206)448-4076 FAX (206) 448-34 73 Owner Representative: James 0. Williams, AIA Architect Closest Building Classification: Single Family, all Type VN (wood frame) Project Allowance for Construction items, designs by Architect, Landscape Architect, Engineers: Cost to be determined. Site: Currently developed with single family home with attached heated garage, guest cottage, asphalt driveways and landscape improvements. Specific Site Legal Description: Northstream Lane Plat, copy attached. Site General Description of lay of the land: Gentle slope to the Northwest, with deep creek (Northstream) on the North side of the lot. Access to the residential property is by way of a wooden bridge with large glu-laminated main beams and concrete pier supports set back from the stream. The South portion of the lot is occupied by the structures, and driving areas are all asphatted. Large trees border the East and South property lines, Entry at existing driveway: Existing driveway to site is developed for single family use with curbcut and curbs bordering Northstream Lane. Considerations: It appears that future improvements are allowed by City of Edmonds current zoning. Future improvements considered are a 400 sq.ft. carport, enclosure of the existing heated garage, a small lap -pool, an enclosure of a portion of the front concrete porch (N.E. house comer) that is currently surrounded with 2 walls, structural repairs to footings that are settling, restoration and cleaning up the creek, and landscape improvements. These proposed improvements will be designed at a later date and submitted to the City of Edmonds for approval prior to any work being performed. Utilities: City water and sewer are provided. Water service line is exposed in eroded stream bed. Telephone and electrical service are underground and are exposed at the creek bed on the East portion of the property. Utility providers strongly recommend that these be covered to protect from freezing and from damage. Design Architect and Consultant: Williams Architects, AIA Seattle Office Landscape Design and Consulting: Glenn Takagi, ASLA, Landscape Architect (Offices in Shoreline). Fees: Basic fee is required for stream/creek restoration; fees for other improvements is subject to City of Edmonds review based on value of improvements, plan review fees, inspection fees. Utility Standards: Water: City of Edmonds Sewer: City of Edmonds Grading and Drainage, Storm Detention: City of Edmonds Storm Water Management Plan. Energy Analysis: None required for stream maintenance work. Structures: Residential, 2 structures, wood framed, two story. Parking: Spaces for 4 standard cars. Circulation space is provided for backing and turning. Martin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects 1 Z C m ma 0 80 C MT 0-1 —Z 0 -n M m 0 0 0 C C TIT 0 Z Z Z 0 :J 0 m WILLIAMS ARCHITECTS Summary of Stream Condition: The present stream is classified by the City of Edmonds as protected and has the potential of fish migration. As such, any and all work, modifications to banks, increased surface runoff, or any other activities that would or could change the direction, flow, or condition of the stream must be Z approved in advance by the City of Edmonds. The stream history dates back many years prior to the incorporation of the City of Edmonds. m The stream reportedly at one time supplied local residents with drinking water, with the source of the 'A "fi stream near Mayfield Park. As development took place among properties bordering the stream, as � 0 m various methods were used to accommodate the housing sites, such as filling in portions of the C banks, installing culverts, installing weirs and channels to divert the stream and other non- M 0 80 ecologically sound methods. C The stream is one of the main local outfalls for storm water from upstream developments, 3: M M Z roads, play areas, and residences. The stream flows year around with a flow rate of about 100 feet per minute and a volume of approximately 250 gallons per minute in the summer months, and in the winter rain periods it doubles those rates and in peak storms at least triples those rates. 0) 0 -n The stream portion on the Schmitz property appears to have been protected from change m M when the present home was constructed. It appears that efforts were made to install stone retaining 0 Vi walls to protect the banks, and, a series of 4 low concrete weirs were installed to control the flow of 0 OC the stream. The weirs varied in height from 12" to 30" to manage the 10' drop in level from the East C property line to the location under the bridge to the West. From the bridge to the West the stream M 0 Z appears to be fairly flat until it enters a culvert on the property to the West. Over the time since the current house was constructed, maintenance of the stream was limited and storms and erosion have X eroded the pinnings of the small flow control weirs, which allowed them to collapse changing the flow --I of the channel causing turbulent pools and uncontrolled bank erosion. Z The erosion that is taking place is primarily around the large concrete overturned weir Vj remnants as well as portions of the bank -side collapsed rockerles. The stream appears to be in a steady erosion pattern, approximately 3 to 4 inches per year due to the uncontrolled bed alignment. 0 The Present landscape embankment structure is deteriorating due to the steepness of the banks and m roots are not able to sustain their hold in the steep soils. As the bed deepens, the banks are being undermined and causing upper soil surfaces to steepen and erode at increased rates.. Obstructions in the main channel create extreme erosion actions during peak flows as evidenced by undercutting of banks and widening of the stream channel cross section. The erosion is currently threatening the footing supports for the Northwest portion of the residence as well as the pier supports for the access bridge. Martin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects 2 WILLIAMS ARCHITEaS Proposed Maintenance Measures: The Owner has every desire to protect the current stream, to take action to restore the stream, and to install measures to protect the stream in the future. This desire is the result of a combination of the need to protect the structures as well as to maintain the value of the improvements The steam is viewed as a positive feature of the property and provides the Owner with enjoyment and pleasure, and provides a welcome buffer from the adjacent streets and properties. First, the Owner desires to undertake basic maintenance actions such as: clean the non- native rubble, discarded logs, rocks (displaced from the rockeries along the stream bed). This will minimize the strong turbulent water activity of mid channel obstructions from further eroding the steep banks. Second, the Owner proposes reinstalling weirs either of concrete or logs to control the descent of the water and prevent erosion and deepening of the stream. Combined with the weirs would be restoration of the bankside armoring (rockery). Third, the Owner proposes to restore the eroded stream bed material with clean imported clean river gravel from an approved source intended to promote stream bed/ bank protection. Fourth, the Owner proposes to restore the washed -away plantings with species proposed by the Landscape Architect and consistent with recommendations of the City of Edmonds. Fifth, the Owner proposes to perform structural repairs to the existing footings that are settling as a result of the slope erosion. All of the proposed work would be performed under the supervision of Professional Consultants, and prequalified Contractor (selected would be insured, bonded and have a previous a proven record of acceptable work in the specific area of work for which they re hired) Best Management Practices (BMP's) to the protect the stream from silt and spoils would be installed prior any maintenance work along the banksides. Any removal of the debris in the stream bed is not expected to create clouding of the water downstream because the material being removed is for the most part laying on stream gravel's. Equipment proposed for the work would be a long -boom crane used to lift the debris from the creek. No motorized or heavy equipment will be in the stream itself, and dislocation of bankside materials will not occur. Large rocks from the rockery that have fallen into the stream will be relocated to stabilize the banks. Upon completion of the debris removal and the weir installation, additional boulders and new gravels would be installed to establish stream bed. There is a sense of urgency in that clean up would best be completed during stream low flow conditions, and clean up work would help minimize any further erosion expected this winter. Marlin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects 3 Z 0 C m rn 0 80 C m m Z ID C-0 0 -n n V m M 0 0 M 0 Z r- .4w I M Z --i I or Z m WILLIAMS ARCHITEaS Proposed Landscape Remediation Measures, Bank and soil stabilization will involve a combination of raising and armoring the stream banks (see Z section drawing L-2. Strearnside rocks will be backed with a geotextile fabric and a pea gravel seam prior to being backfilled with soil. Finish grade of the slope will meet the streamside rocks a 0 IT minimum of one inch (1") below the rock topedge. The regraded edge of stream and slopes will be. covered with a composted mulch material and covered with a jute netting fabric stapled to grade. Vi Plant materials for cover establishment will be selected from the a list of plant materials typically a m c: used for local stream buffer plantings to stabilize the slope and provide soil retention and habitat. M 0 0 Trees/ shrubs will typically be planted in groupings with groundcovers being one gallon cans planted C no further than thirty inches (30") on center. M m Z Plant Acer circinatum/ VINE MAPLE Comus stolonifera/ RED TWIG DOOGWOOD Corylus comuta/ HAZLENUT co 0 Gaultheria shailon/ SALAL Polystichurn munitum/ WESTERN SWORDFERN m m 065 Mahonia nervosa/ LOW OREGON GRAPE 0 Fn 0 Epimedium spp./ BISHOPS CAP C W C Cn Arctostaphylos media/ KINNICKINNICK M 0 Pinus mugo/ MUGHO PINE Vaccinium parviflorum/ HUCKLEBERRY Rhododendrons Ilex c. 'Convexa'/ JAPAN. BOXLEAF HOLLY Z Sarcococca humilis/ SARCOCOCCA Taxus m.'Densiformis'/ YEW 65 Carex morrowii/ SEDGE Z' m Martin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects 4 WILLIAMS ARCHITEaS Design Submittals, Documents, for approval by Owner and City of Edmonds: Existing Conditions Drawings, I of I and 2 of 2, drawn at %' = I foot scale.. Site plan, showing stream restoration measures, techniques and protection. Landscape plans, L-1 and L-2 showing proposed maintenance, typical details to be used, drawn at 1W I Z foot'scale. Preliminary Cost Estimate for this phase divided by construction, stream restoration, and landscaping, exact amount to be determined after City of Edmonds approval to proceed; preliminary cost estimate $15,000. m City of Edmonds Development Information Application, as provided by the City of Edmonds, completed by Architect and submitted by Architect to City of Edmonds. Survey of property Plat Map This Design Program m M 0 0 M m Short Schedule: October 2001, prepare and submit documents and request to City of Edmonds for review, field visit, by City. 0 -n November, obtain approval to proceed with removal of debris from stream. X M m m 0 November, proceed with removal of debris from stream and install temporary flow controls 0 C c nsisting of log weirs or permanent concrete weirs similar in size and shape as the o M 0 original structures. November, proceed with temporary side slope protection of existing slopes. April 2002, proceed with installation of new permanent landscaping. Z Z Attachments: m Northstrearn Plat Map Drawing 112, Showing exisiting stream conditions, topo, East-West Profile of stream. Drawing 212, Showing two North -South Profiles of stream. Drawing L-1 Showing, proposed maintenace plan view. Drawing L-2 Showing sections of proposed maintenace. Plates I through 4, Photographs of North bank and stream. Plates I through 4, Photographs of South bank and stream. Plates 5 through 19 Photographs showing details of stream, banks, and side slopes, Martin and Lourdes Schmitz, Design Program, September 24, 2001 Williams Architects 5 WILLIAMS ARCHITEaS DeSQrlption of PhotpargUftiQ (Stationing is relative, measured in feet from East to West commencing at the East Property Line) Plates I through 4 North: view of stream bank from East Property line to just below bridge. Plates 1 through 4 South: view of stream bank from East property line to just below bridge. Plate 6: View from ac rOss stream and bridge toward residence. Plate 6: View of stream looking East from center of bridge. Plate 7: View from approximately station 60 looking East showing rubble, log from collapsed rockery littered in streambed. rocks Plate 8: View from approximately station 5 at the East property line looking East Plate9: Detail view at approximately station 10 showing "Posed water service pipe and pieces of concrete from previous dam. Plate 10: View at approximately station 16 of exposed electrical service conduit. Plate I I: View of partial existing dam at station 20. Plate 12: Side view of partial existing dam at station 20. Plate 13: View of collapsed dam approximately station 60. Plate 14: View of large slab laying on side at approximately station 60. Plate IS: View showing steep cross slope to the South and above stream in the area where the building footing has settlement Plate 16: View of large tree to the West of the bridge and North of the stream. Plate 17: Detail view of exposed building footing. 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