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17006 74TH AVE W.PDF11,1111111111 5856 17006 74TH AVE W CITY OF EDMONDS 250 STH AVENUE NORTH, EDMONDS, WA 98020 (206) 771-3202 RCW 197-11-970 Determination of Nonsignificance (DNS) DETERMINATION OF NONSIGNIFICANCE Description of proposal: New Single Family Residence Building Plan Cheeck # 974 Proponent: Duane Systad Location of proposal, including street address if any: 17006 74th Ave. W. Lead agency: CITY OF EDMONDS The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement is not required under RCW 43.21.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. XX There is no comment period for this DNS. This DNS is issued under 197-11-340(2); the lead agency will not act on this proposal for 15 days from the date below. Comments must be submitted by .1993. Responsible Official: Jeffrey S. Wilson Position/Title:' Current Planning Supervisor, Department of Community Services - Planning Division Phone: 771-0220 Address: City of Edmonds, 250 5th Avenue North, Edmonds, WA 98020 Date: 3��4 7 1 1 1 XX You may appeal this determination to Robert Chave, Planning Manager, at 250 5th Avenue North, Edmonds, WA 98020, no later than March 13 , 1993, by filing a written appeal citing the reasons. You should be prepared to make specific factual objections. Contact Jeffrey S. Wilson to read or ask about the procedures for SEPA appeals. XX Posted on March 2, 1993 C-199;0 -at the Edmonds Public Library, Edmonds Community Services Building, and the Edmonds Post Office. XX Distribute to "Checked" Agencies, along with a copy of the Checklist. Page I of 3 s97a.Doc Mailed to the following along with the Environmental Checklist: Department of Ecology Environmental Review Section P.O. Box 47703 Olympia, WA 98504-7703 Duane Systad 9208 7th Pl. W. Everett, WA 98204 Karen Graff Terune Homes, Inc P.O. Pox 1267 Kent, WA 98035 Page 2 of 3 A974.00c CITY OF EDMONDS ENVIRONMENTAL CHECIMIST A. BACKGROUND 1. Name of .proposed project, if applicable: PllAUE: A919 IJ -Wi S�S`I Q Rt=51 i��t.1�'1 i9(, ��a ��m • C�►vs=jg�L�`�•Ie1c� - 2. Name of applicant: 3. Address and phone number of applicant and contact person: 1 o Z$ `T-th PLI- lei. t=VV EEEnj d •1 3A Zc 4. Date checklist prepared: � TI�gg S. Agency requesting checklist: City of Edmonds. 6. Proposed timing or schedule (including phasing, if applicable): As 12 (STAFF COMMENTS) 7. Do you have any plans for future' additions, expansion, or further activity related to or connected with this proposal? If yes, explain. (STAFF COMMENTS) IIIVITIIO.P-ql pAACTFn Pane ]. of 26 8. List any environmental information you know about that has been .prepared, or will be prepared, directly related to this proposal. 1 !:5, (ocAm,:w ui Au AaeA ILIE Q �ii�l�vn�inar,wrFA�l cJ �^�•SITI�lC 8� `�1T� �—� �=mm�y�5 --12gAl�lg(�y.p2lij� p�NS � SDI c..S V�.�OY�� - (STAFF COMMENTS) 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain.. (STAFF COMMENTS). 10. List any government approvals or permits that will be needed for your approval, if known. (STAFF COMMENTS) 11. Give brief, complete description of your proposal, including the proposed uses and size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. Tbu��r� sttilCTl�mlLy �2�� lhc�, (STAFF COMMENTS) 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide range or boundaries of the site(s). Provide legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. 1 r] 1 'U- 8"; 5w R W '? 5'"L /4v� Sb/ S'Etz� ArrAc� i�t•n (STAFF COMMENTS) TO BE COMPLETED BY APPLICANT B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site circle one): Flat, rolling, hilly, steep slopes, mountainous, other• 0- 7n. 16" 1`00010 • 55 ,N _ � (STAFF COMMENTS) b. What is the steepest slope on the site (approximate percent slope)? (STAFF COMMENTS) CHKLT/10-8-91.MAST[R Page 3 of 26 C. what general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. �A hl gy (STAFF COMMENTS) d. e. f. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. N m (STAFF COMMENTS) Describe the purpose, type and approximate quantities of any filling or grading proposed. Indicate source of fill. ( STAFF COMMENTS) Z.?/Cp • i�'tL rACiy C �/� c^tom Sv r� Could erosion occur as a result of clearing, construction, or use? If so,; generally describe. O Lo,Us�ru�ct�oY� It �iTs� �l.L mac. -sue on N'_�-pt_w�Ta (STAFF COMMENTS) �� i9 S Y ' Ac n CAt 1_ � �2- o� JLATe ► 6-M �j. cat? ©T�kt re- I( 0S% 00 h'►►4T �Y� p,E pu-kc.Eo 10 Ak. -S %M0060 tf t)�t�t'T�►T7ol�J TL V��c;t t'Los Ivv,) Qcst'E011 AU pfjo s> -M 4[j5g9 � TWTi OYv 1RK ©p �•� COAJsI a ACTIM T eoP•TVV K) �,r=n� ►,., ca � TI-4-wT Ir►'1M4� .� t�� 5 r— r, n .,. ,. � � •-rur- <► ., r�r , g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? (STAFF COMMENTS) h. Proposed measures to reduce. or control erosion, or other impacts to the earth, if any: 1A ( STAFF COMMENTS) C, C Ags `t> �^��y , L i ✓s �. P.T . 2. AIR a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Norm �r a cA yr V. /)kl AM D G0iL-1 52�cj' nIJ i52wTrnVJF (STAFF COMMENTS) F b. Are there any off -site sources of emissions or odor that may effect your proposal? If so, generally describe. F� (STAFF COMMENTS) C1IKLT/10-8-9I.MASTER Page 5 of 26 C. Proposed measures to reduce or control emissions or other impacts to the, if .any: (STAFF COMMENTS) 3. WATER a. Surface: (1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. WCT (STAFF CONSENTS) (2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe available plans. (STAFF COMMENTS). (3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. (STAFF COMMENTS) (4) Will the proposal require surface water withdrawals or diversions. Give general description, purpose, and approximate quantities if known. (STAFF COMMENTS) (5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. �0 (STAFF COMMENTS) (6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. hl D (STAFF COMMENTS) b. Ground: (1) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, propose, and approximate quantities if known. Q CIIKLT/10-8-91.MASTER Page 7 of 26 (STAFF COMMENTS) (2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; 'industrial, containing the following chemicals...; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. S ra; Lo (STAFF COMMENTS) C. Water Runoff (including storm water): (1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (including quantities, if known). Will this water flow into other waters? If so, describe. (STAFF COMMENTS) (2) Could waste materials enter ground or surface waters? If so, generally describe. (STAFF COMMENTS) d. Proposed measures to reduce or control surface, ground, and runoff . water impacts, if any: (STAFF COMMENTS) 4. Plants a.� Check or circle types of vegetation found on the site: ,_deciduous tree:.` der p1 , aspen, other: _evergreen tree: ,.ir eda pine, other: _shrubs grass pasture crop or grain wet soil plants: cabbage, other: cattail, buttercup, bulrush, skunk water plants: water lily, eelgrass, milfoil, other: other types of vegetation:, D_S:"'L.LP LAr.Y .r3i - (STAFF COMMENTS) b. What kind and'amount of vegetation will be remove or altered? CIIKLT/10-Q-91-MA'-FER Page 9 of 26 (STAFF COMMENTS) t C. List threatened or endangered species known to be on or near the site.- D (STAFF COMMENTS) d. Proposed landscaping, use of native plants, or other materials to preserve or enhance vegetation on the site, if any: O 5i 1R 51 t`�C �'1lkl L.^WnMCAnR= — (STAFF COMMENTS) S. Animals a. Check or circle any birds and animals which have been observed on or near the site or are known to be on or near the site: l _birds: hawk, heron, eagle, songbirds, other: (;, I JAI L _mammals: deer, bear, elk, beaver, other:_:5QL4l2FZC fish: bass, salmon, trout, herring, shellfish, other: (STAFF COMMENTS) b. List any threatened or endangered species known to be on or near the site. O Llr . (STAFF COMMENTS) C. Is the site part of a migration route? If so, explain. (STAFF COMMENTS) d. Proposed measures to preserve or enhance wildlife, if any: (STAFF COMMENTS) 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to most the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. �- (STAFF COMMENTS) CIJKLT/10-8-91.MASTER Page 11 of 26 b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. (STAFF COMMENTS) C. What kinds of energy conservation features are included in the plans of this proposal? f osE r 0- 5 _ °U4 4 4 d n't (STAFF COMMENTS) 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so describe. (STAFF COMMENTS) (1) Describe special emergency services that might be required. (STAFF COMMENTS) 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? y %/AUr- 13Q IIU')i kIli 5 iTti --- 4AAD-E ROUAP 5 ( STAFF COMMENTS) b. Has the site been used for agriculture? If so, describe. (STAFF COMMENTS) C. Describe any structures on the site. (STAFF CO d. Will any structures be demolished? If so, what? (STAFF COMMENTS) e. What is the current zoning classification of the site? CIiKLT/10-8.91.MASTER Page 14 of 26 (2) Proposed measures to reduce or control environmental health hazards, if any: 4-I tTaura (STAFF COMMENTS) b. Noise (1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, ,operation, other) ? RioU � (STAFF COMMENTS) (2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. -'* . • J'r 1f S n I l I_1f &L_ (STAFF COMMENTS) (3) Proposed measures to reduce or control noise impacts, if any: (STAFF COMMENTS) (STAFF COMMENTS) f. What is the current comprehensive plan designation of the site? (STAFF COMMENTS) g. If -applicable, what is, the current shoreline master plan designation of the site? (STAFF COMMENTS) h. Has any part of the site been classified as an "environmentally sensitive- area? If so, specify. T� 02t Mtii05 CLA SsiTr__-5 -rN C ACE. 1 11,11VA (STAFF COMMENTS) i. Approximately how many people would reside or work in the completed project? L� P06pLE IaFMIiLD(3E�'fAUQ 7RZ-: (STAFF COMMENTS) �1I V4 Tnn n.QI nn n CTr-n I PAn(� 15 of 26 'j. Approximately how many people would the completed project displace? (STAFF COMMENTS) k. Proposed measures to avoid or reduce displacement impacts, if any: (STAFF COMMENTS) 1. Proposed measures to ensure the proposal is compatible with existing and projected.land uses and plans, if any: Sp7'1SF4' R�6)U �REEM&.t-f�'T (STAFF COMMENTS) 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. (STAFF COMMENTS) b. Approximately how many units, if any would be eliminated? Indicca�t�e whether high, middle, or low-income housing. (STAFF COMMENTS) C. Proposed measures to reduce or control housing impacts, if anyt (STAFF COMMENTS)' 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principle exterior building material(s) proposed? �oow l�/i S�h'ICRC% CkibE �D �/l� :t.l:�n� K' S1 ni►-('�Cr��`��ions�•r..►��tl �• �D�� (STAFF COMMENTS) b. What views in the immediate vicinity would be altered or obstructed? (STAFF COMMENTS) .11- - . I .., T. nann 17 nf. 25 C. Proposed measures to reduce or control aesthetic impacts, if any: 61RIALAP- 4oW 2_UTlot�i AMD ,Dr-SFco1 !�oln.lzf (STAFF COMMENTS) 11. Light and Glare a. What type of light or glare will the proposal produce? What time. of day would it mainly occur? tiles RMAI�u� Doo►2, 1Y T � � _Pao1r�5. ,tq/ Roor-S .. t1tQAQ tAMO . s ir_ LAc1VSL93Pt= SSG of �c-l+r 'T1� U' (STAFF COMMENTS) b. Could light or glare from the.finished project be a safety hazard or interfere with views?. ( STAFF COMMENTS) C. What existing off -site sources of light or glare may affect your proposal? rO . JJ 31.r_ ._ (STAFF COMMENTS) d. Proposed measures to reduce or control light and glare impacts, if any: (STAFF COMMENTS) 12. Recreation A. What designated and informal recreational opportunities are in the immediate vicinity? (STAFF COMMENTS) b. Would the proposed project displace any existing recreation uses? If so, describe. (STAFF COMMENTS) c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: (STAFF COMMENTS) 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state, or local preservation registers known to be on or next to the site? If so, generally describe. t3 (STAFF COMMENTS) b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. Q /A (STAFF COMMENTS) c. Proposed measures to reduce or control impacts, if any: (STAFF COMMENTS) 14. Transportation a. Identify public streets' and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. porBZZY 1QCA!:rV=-1-3 PM O f=-A_121LIVAjI_ROAD eyFv� BiP 17 t 1 76M �1��, (STAFF COMMENTS) b. Is site currently served by public transit? If no, what is the approximate distance to the nearest transit stop? 7,a No (STAFF COMMENTS) C. How many parking spaces would the completed project have? How many would the project eliminate? a Cp2 qAIZAQF- A.019 PPI[VOLLI 9 (STAFF COMMENTS) d. Will the proposal require any new roads or street, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). bin (STAFF COMMENTS) e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. (STAFF COMMENTS) f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. (STAFF COMMENTS) g. Proposed measures to reduce or control transportation impacts, if any: �JA (STAFF COMMENTS) 15. Public Services a. Would the.project result in an increased need for'public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. (STAFF COMMENTS) b. Proposed measures to reduce or control direct impacts on public services, if any: a (STAFF COMMENTS) 0 16. Utilities a.• Circle utilities currently available at the site: electricit Qn u' - ral gas ater efuse servic ele hone sanitary sewer, septic system, other: (STAFF COMMENTS) b. Describe the utilities that are proposed forthe project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. ALL tm u:ne-5 AAjJtJE0,nki:r ICK)Oix) 10AC MAnIFS T134- (STAFF COMMENTS) C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature of Proponent Date Submitted CIIKIT/10-£1-91.MASTPR f �Iqe 23 of 26 D. SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (do not use this sheet for project actions) Because these questions are very general, it may be helpful to read them in conjunction with the list of the elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposal be likely to increase discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances; or production of noise? Proposal measures to avoid or reduce such indreases are: 2. How would the proposal be likely to affect plants, animals, fish, or marine life? Mn Proposed measures to protect or conserve plants, animals, fish, or marine life are: 3.' How would the proposal be likely to deplete energy or natural resources? �`LL � Proposed measures to protect or conserve energy and natural resources are: I IA 4. How would the proposal be likely to use or affect environmentally sensitive area designated (or eligible or under study) for governmental protection; such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitat, historic or cultural sites, wetlands, floodplains, or prime farmlands? Proposed measures to protect such resources or to avoid or reduce impacts are: S. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? fl DES hl (3- / ✓7'2- 1 Proposed measures to avoid or reduce shoreline and land use impacts are: �!14 6. How would the proposal be likely to increase demands on transportation or public services and utilities? I`�I 0CILI' /'1!VI TW) n nl P1R"'.TFC r;: r:(, -)'-� c.f_ r,, Proposed measures to reduce or respond to such demand(s) are: �1A 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. ({{� n►.I� j I�h-S�IDL�L� lll� l'yAl-('LILT L-)i-r 1 4ti�%�/1k— �Tr�C�41.(,�� Tl•-1 Vr� Al gi�:M Y ALLOWCb �� fnA3S�CTIi'1r( I�Q�1uU10 nr1 P. VACa-Vr 1,5:PA MEMORANDUM CITY OF EDMONDS PLANNING DIVISION 250 STH AVENUE NORTH, EDMONDS, WASHINGTON 98020 TO: BUILDING PERMIT PLAN CHECK # 974 FROM: John Bissell, Code Enforcement Tech. Jeffrey S. Wilson, AICP Responsible Official DATE: March 1, 1993 SUBJECT: ENVIRONMENTAL DETERMINATION FOR NEW SINGLE FAMILY RESIDENCE BUILDING PERMIT, FILE NO. 974 I have had the opportunity to visit the site; review the environmental checklist, and clearing lLan - A copy of which are filed in the official file for this permit. Based on my review of all available information and adopted policies of the City, I recommend that a determination of nonsignificance, be issued. The only environmental concerns addressed by the SEPA map and by the Environmentaa impact,. and, the only concern redily visible from the subjet sit is slope stablity and errosion potential. The subject site slopes steeply down to the west at an average grae of 19.5 %. The stepp slope issues are mitigated through adopted City Ordinance found in § 19.05 of the Edmonds Community Development Code. Therefore no additional mitigations will be required to assure no substantial imapct to the site or the surrounding area. Review by Current Planning Supervisor: I concur I I do not concur Comments: Jeffrey S. Wilson Attachments PC: FILE NO. Robert Chave, Planning Manager qIs Date Page 3 of 3 #974.DOC Y 89-0'109 To: CITY'OF EDMONDS T �'L�M. HALL 250 - 5TH AVE. N. • EDMONDS, WA 98020 • (206) 771-0220 • FAX (206) 771-0221 MAYOR COMMUNITY SERVICES DEPARTMENT Public Works • Planning • Parks and Recreation • Engineering LETTER OF TRANSMITTAL November 20, 1992 Duane Systad 9208 7th P1. W. Everett, WA 98204 Subject: Corrections for Planning Division for Building Permit Application # 974 Transmitting: Letter to contact person. For your information: XX As you requested: For your file: XX Comment and return: Note attachments: Comments: Planning Division John Bissell • Incorporated August 11, 1890 • Sister Cities International — Hekinan, Japan November 20, 1992 Karen Graff Terhune Homes Inc. P.O. Box 1267 Kent WA, 98035 RE: Corrections required for the Planning Division on Building Permit Application # 974 for Duane Systad Dear Ms. Graff: This letter is a follow-up to our phone conversation of November 19, 1992 at 4:30 p.m. In this phone call I stated that I need some specific information added to the application before I can proceed with the processing. First there are several omissions and incorrect answers on the City of Edmonds Environmental Checklist. I will itemize these by the page number and line. • Page 1, Line A.4. The date that the checklist was prepared has been omitted You must provide the date that the checklist was prepared. • Page 4, Line B. Le. The amount and type of fill has been omitted. You must indicate the quantities of material to be cut and the quantities of fill. • Page 4, Line B. It This question asks if erosion could occur due to the proposed project. This question has been answered no. The City questions this answer because any time soil is exposed erosion could occur. The topographic map provided and field inspection of the site reveal that the subject property is quite steep. The steepness of the slope amplifies any erosion that could occur in a particular soil type. You may want to consult with your geotechnical engineer for the answer to this question. • Page 5, Line B. Lh. This question asks for proposed measures to reduce and control erosion or other impacts. The question has been answered N/A. The City questions this answer for the same reasons as I stated above for line B. I.f. Again, you may want to consult with your geotechnical engineer. • Page 9, Line BA.b. The question asks what type of vegetation will be removed or altered. The answer is that overgrowth and stumps will be removed. The removal of this type of vegetation on a steep slope will frequently result in slope failure and substantial erosion. There may be acceptable ways to accomplish the clearing stated, but the methods may be severely restricted. Again, you may want to consult with your geotechnical engineer. In addition, the City has not received the required soils.report. The Planning Division and State Law require that the soils report be complete and approved by the city or the City's geotechnical consultant prior to the beginning of the SEPA (State Environmental Policy Act) process. Therefore I can take no further action on this permit application until the required soils report is received by this office and then reviewed by the City and the City's geotechnical consultant. 1: The other problem that we discussed on the phone relates to the legal status and dimensions of the lot. In reviewing the proposal the City is required to determine whether or not the lot is a legal lot according to the State subdivision laws and the City ordinances. This review indicates that the lot was created from a larger lot by a short subdivision in 1973 (file number S-33-72). This file indicates a much smaller lot than the lot shown on your site plan and described by the legal description which you provided. At the time of subdivision S-33-72, the local and State subdivision laws were different. Therefore it is possible that the dimensions of the lot were changed, and that the City has no record of this change. The City needs you to provide the City with documentation of the creation of the lot. If the dimensions are different from the submitted plans, the City will need a new site plan to match. If it is determined that the lot is not a legal lot, you may be required to take what ever action is necessary to make the lot legal. Be aware that if the site plan changes, your setbacks and lot coverage will also change, and that you must still meet the setback and lot coverage requirements. In addition to these concerns, there is a problem with your height calculations. The City requires that a stable datum point elevation be provided for reference. This point must be a fixed point at a stated elevation. Examples of acceptable datum points are the elevation of a manhole cover, a catch basin, a street monument, or a spike driven into the asphalt of the street. Unacceptable datum points would be things such as a utility pole, a property comer, a fire hydrant or any point where elevations are likely to change, or are not possible to re -measure. If you have any questions, please do not hesitate to contact me. Sincerely, John Bissell, AICP Planning Division, C. Duane Systad COUVRETTE GEoTEcxNIcAL ENGINEERING, INC. STREET FILE RECEIVED N O V 3 0 1992 PERMIT COUNTER 17311 - 135TH AVENUE NORTHEAST, #A500 - WOODINVILLE, WASHINGTON 98072 - (206) 486-1669 Mr. Duane Systad 9028 - 7th Place West Everett, Washington 98204 Dear Mr. Systad: November 23, 1992 Letter Report Geotechnical Evaluation Proposed Single -Family Residence 17006 - 74th Avenue West Edmonds, Washington File No. 394-01 INTRODUCTION This letter report presents the findings and recommendations of our geotechnical evaluation of the site at the above address, on which you are planning a single-family residence. The purpose of this geotechnical evaluation is to present our findings to allow you to petition the City of Edmonds for waiving the requirement of Chapter 19.05 of the Edmonds Community Development Code, and to provide general recommendations for site development and foundation design for the proposed development. The site is located in Edmonds, Washington, as shown on the Vicinity Map, Figure 1. For our use in this evaluation, we were provided by Lovell-Sauerland and Associates, Inc. with an undated plot plan titled "Terhune Homes, Inc., Duane and Maudi Systad," which is presented in Figure 2. We understand the planned residence will have a basement which will be below grade on the east side and daylighted on the west side. SCOPE OF SERVICES Specifically, our scope of services includes: 1. Review the geologic and soil conditions at the site based on published geologic maps, 2. Provide general recommendations for site development and foundation design. and, 3. Prepare a written report to document our findings and recommendations. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 2 SITE CONDITIONS SURFACE CONDITIONS A geotechnical engineer from our office visited the site on November 18, 1992. The site is 7y+h approximately rectangular in shape, totalling about 0.6 acre. .It is fronted on the east by Rtk Avenue West, and bounded on the north, south and west by single-family residences. The topography in the vicinity of the site generally slopes moderately to steeply from the east to the west, with a gentle cross slope down from the north to the south. Within the lot the ground slopes from the east to the west generally in gradients of 33% or less, with local gradient slightly over 40% near the northwest corner. The total topographical relief across the lot is about 40 feet, from a high point at the northeast to a low point at the southwest corner. The lot has previously been cleared. Presently the lot is mostly covered with wild grass, with a thick growth of berry bushes along the western boundary. A depressed area in the northeast portion of the site was observed during our site visit, which may be the result of soil being removed previously from the site. Signs of slope instability, such as surface tension cracks, erosion channels, water seepage, recent soil movement, etc., were not observed at the site. GEOLOGIC AND SOIL CONDITIONS The Geologic Map of the Edmonds East and Part of the Edmonds West Quadrangles Washingion, by J. P. Minard, published by U. S. Geological Survey in 1983, was referenced for the geologic and soil conditions at the site. According to this map, the surficial soil unit covering the site and its immediate vicinity is mapped as an advance outwash deposit (Qva), as shown in Figure 3. It was deposited by meltwater flowing from the advancing front of the glacier. The advance outwash consists mostly of gray, clean, well -drained, stratified gravelly sand. The sediments typically coarsen upward. Fine-grained sand and some silt are common in the lower part of the unit and may occur sparingly in the upper part. The upper portion of the advance outwash may be stained by iron oxide precipitated from groundwater. The advance outwash in its undisturbed state is generally medium - dense to dense, and is capable of supporting light residential structures without excessive settlement. A shallow pit dug manually in the central east area of the lot encountered a tannish -brown to brown, dense, gravelly sand, overlain by about 12 inches of root mat and topsoil. In the central west area, a gray -brown, medium -dense, gravelly sand exposed on the surface was observed. COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 3 GROUNDWATER CONDITIONS We were informed by Mr. Brian Mercil of Lovell-Sauerland that water seepage had been observed near the southwestern corner of the site and a French drain was installed along the western boundary to drain the water. The seepage was probably due to the groundwater perched on top of the more silty strata at depths and emerged out of the slope at the lower elevation of the site. The groundwater level at the site will fluctuate seasonally, depending on precipitation, surface runoff, ground cover, and other factors. Higher groundwater level can be expected during the wetter months of the year. CONCLUSIONS AND RECOMMENDATIONS GENERAL Based on the subsurface conditions observed at the site and the geologic and soil conditions indicated in the above geologic map, it is our opinion that the site is suitable for the planned development from the geotechnical viewpoint. A subsurface exploration of the site will not be required if the following guidelines for site development and foundation design are followed. SLOPE STABILITY The site is outside the Meadowdale slide area as shown on the Landslide -Hazard Map prepared by GeoEngineers Inc. The advance outwash at the site is generally dense and well -drained. It is our opinion that the potential for soil movement to occur at the site should be relatively low. SITE PREPARATION AND GRADING The site preparation should include clearing and grubbing within the construction limits. The surficial root mat and the topsoil within areas of the building and driveway should be stripped. After the surficial unsuitable soils have been removed and the site excavated to grades, the exposed surface should be compacted to a non -yielding condition using a self-propelled vibratory compactor. Any new fill required should be placed and compacted as outlined in the STRUCTURAL FILL section of this report. EROSION CONTROL Due to the well -draining nature of the advance outwash at the site, it is our opinion that the erosion hazard of the site should be relatively low. Disturbance to and removal of existing vegetation at the site should be minimized. The vegetation disturbed or removed outside of the construction limits should be re -seeded or re -planted as soon as practical. The new vegetation should be of species capable of adapting to the site environment and should be maintained until they are fully established. COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 . File No. 394-01 Page 4 A layer of jute netting or other erosion mat may be placed in areas removed of vegetation to reduce erosion potential and to help the new vegetation take hold. A silt fence should be erected along the downhill side of the construction to contain sediments that may be washed down the slope. EXCAVATION AND FILL SLOPES Excavation up to about 10 feet in depth may be required along the eastern face of the proposed building. Under no circumstances should temporary excavation slopes be greater than the limits specified in local, state and national government safety regulations. The on -site sandy soils are generally cohesionless, and can cave suddenly without warning when excavated in overly steep slopes. Temporary cuts greater than four feet in height should be sloped at an inclination no steeper than 1.25HAV. The above slope inclination is only applicable to cuts above groundwater table. The total flow uncontrol!le'd over th'eltop of cutl loges into the excavate' area. ERxoosed cut slopes shouldlb'e coveried[w" thTl�tic sheets during periods of rain to m Ri�`erosion�and sloughing. If slopes of these inclinations or flatter cannot be achieved or if excavations greater than 4 feet in depth are required, temporary shoring would be required. Recommendations for shoring design are beyond the scope of this report. Permanent fill embankments constructed in accordance with the STRUCTURAL FILL section in this report should be inclined no steeper than 2.5H:1V. All permanently exposed slopes should be planted with appropriate species of vegetation to reduce erosion and improve the stability of the slopes. The vegetation should be maintained until it is established. BASEMENT WALLS Basement walls should be backfilled in accordance with the recommendations provided in the STRUCTURAL FILL section of this report. Basement walls restrained horizontally on top are considered unyielding and should be designed for a lateral soil pressure under the at -rest condition. Basement walls restricted at the top from rotation and with level backfill should be designed for a lateral soil pressure of 65 pounds per cubic foot (pcf) equivalent fluid weight (EFW). We would be available to provide you with the design lateral pressure if sloping ground surface behind walls is used. Backfill material within a horizontal distance of 15 inches of the basement walls should be of a clean, free -draining, granular, structural fill, containing no more than 5% by weight of fines passing the No. 200 sieve, based on the fraction passing the No. 4 sieve. This free -draining backfill should be COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 5 compacted to the minimum dry density recommended in the STRUCTURAL FILL section of this report. The top 12 inches of backfill should consist of compacted, relatively -impermeable, on -site soils. The backfill material for the basement walls should be compacted with a hand -operated compactor. Heavy compaction equipment should not be allowed within a horizontal distance from the wall equal to the wall height. FOUNDATIONS Conventional footing foundations may be used to support the planned building. Footing foundations should be placed in the undisturbed, dense outwash deposit. Standing water should not be allowed to accumulate in footing trenches. All loose or disturbed soil should be removed from the foundation trenches or properly compacted prior to pouring concrete. Exterior footings should extend at least 18 inches below the adjacent ground surface and interior column footings 12 inches below the bottom of adjacent slab. Minimum foundation widths of 16 and 24 inches should be used for continuous and individual spread footings, respectively. For footings recommended above, an allowable soil bearing pressure of 2,500 psf (pounds per square foot) may be used for the footing design. A one-third increase in the above allowable bearing pressures may be used when considering short-term transitory wind or seismic loads. Structural loading information was not available when this report was prepared. Based on our experience of single-family residential structures supported on similar soil conditions and for the above allowable soil bearing pressure, we estimate that the maximum total post -construction settlement should be 3/4 inch or less and the differential settlement across the building width should be 1/2 inch or less. Lateral loads can be resisted by friction between the foundation and the subgrade or the passive earth pressure acting on the below -grade foundation. For the latter, the foundation must be poured "neat" against the undisturbed soil, or backfilled with a clean, free -draining, compacted structural fill. We recommend that an allowable lateral passive pressure of 250 pounds per cubic foot (pcf) equivalent fluid weight (EFW) and an allowable coefficient of friction of 0.35 between the footings and the soils be used. These values include a safety factor of 1.5. The ground behind the basement walls should be level or sloping upward for a horizontal distance at least 3 times the basement wall embedment depth, in order to fully develop the above passive pressure. STRUCTURAL FILL Structural fill is the fill material under footings, slabs -on -grade, pavements, and behind retaining walls where the underlying soils support loads. The structural fill should consist of clean soils with COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 6 particles no larger than four inches and should be free of organic and other deleterious substances. The structural fill should be placed with a moisture content near its optimum moisture content. The optimum moisture content is the water content in the soil which allows the soil to be compacted to the highest dry density for a given compaction effort. The on -site clean gravelly sand soil with little fines is suitable to be used as structural fill. The on -site soil contains excessive fines should only be used under dry weather conditions. Imported structural fill, if required, should be of clean, free -draining, granular soil containing particles no more than 5% (by weight) finer than the No. 200 sieve based on the fraction of the material passing No. 4 sieve, and should have individual particles not greater than 4 inches. Imported structural fill should be stockpiled separately from the on -site soils and covered with plastic sheets to prevent rainfall infiltration. The structural fill should be placed in lifts of no more than 10-inches in its loose state, compacted to a minimum percentage of the maximum dry density determined by ASTM D1557-78 (Modified Proctor Method) as follows: Application Under footings, slabs and walkway Roadway/driveway/parking area subgrade % of Maximum Dry Density 95 % 95% for top 12 inches and 90% below We recommend that Couvrette Geotechnical Engineering, Inc. be retained to evaluate the suitability of imported structural fill, if required, and to monitor the placement and compaction operation during construction for quality assurance of the earthwork. SLAB -ON -GRADE FLOORS Slab -on -grade floors should be placed on firm subgrade prepared as outlined in the SITE PREPARATION AND GRADING and the STRUCTURAL FILL sections of this report. Where moisture control is critical, the slab -on -grade floors should be placed on a capillary break which' is in turn placed on the compacted subgrade. The capillary break should consist of a minimum four -inch - thick layer of free -draining gravel containing no more than 5% (by weight) passing the No. 4 sieve. We recommend that a vapor barrier such as a 6-mil plastic membrane be placed over the capillary COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 7 Y break to keep moisture from condensing on the bottom of the slabs. Two to four inches of sand may be placed over the vapor barrier to aid the curing of the concrete. SITE DRAINAGE Surface Drainage: The ground surface should be graded such that surface water is directed away from buildings. Water should not be allowed to stand in any area where footings, slabs, or pavement are to be constructed. The final ground surface should be sloped at a gradient of 3% minimum for a distance of at least ten feet away from buildings, except in the areas that are to be paved. Surface water should be collected by permanent catch basins and drain pipes and be discharged into a permanent storm sewer. Subsurface Drainage: Should- groundwater seepage be encountered during construction, we recommend that the contractor slope the bottom of excavation and collect the water to ditches and small sump pits, from which the water can be pumped and discharged into a permanent storm drain. A footing subdrain system should be installed around the perimeter of the planned buildings �-' #The s Undef no;circumstance should, roof drains :be connected .to the footing. drain, syStgmi The roof downspout drain system must be separately tightlined to discharge. The footing drain system should have a minimum of 12 inches of vertical fall before it is tied into the storm sewer system. We recommend that sufficient cleanouts be installed at strategic locations to allow for periodic maintenance of the footing and the downspout drain lines. USE OF REPORT This report is prepared for specific application to this project and is for the exclusive use of Mr. Duane Systad and his consultants and representatives. This report, in its entirety, should be provided to prospective contractors for their estimating and bidding 'purposes, but our report, conclusions and interpretations should not be construed as a warranty of the subsurface conditions. The scope of our services 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 this report for consideration in design. We have not performed any subsurface explorations at the site. Our conclusions and recommendations are based on the site surface conditions observed, geologic and soil conditions COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 8 indicated on the above geologic map, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manner consistent with the level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. No warranty, expressed or implied, is,made. The soil and groundwater conditions described in this report may vary from those actually encountered at the site during construction. The nature and extent of such variations may not become evident until construction. If variations appear then, Couvrette Geotechnical Engineering, Inc. (CGE) should be retained to re-evaluate the recommendations of this report, and to verify or modify them in writing prior to proceeding with the construction. ADDITIONAL SERVICES Detailed design plans for the proposed development were not available at the time this report was prepared. We recommend that CGE be retained to perform a general review of the final design and specifications for the proposed development to verify that the earthwork and foundation recommendations have been properly interpreted and reflected in the design and construction documents. We also recommend that CGE be retained to provide monitoring and testing services for the geotechnical portion of the construction work. This is to verify the subsurface conditions at the site and to observe compliance with the design concepts, specifications or recommendations. It will also allow for design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. CLOSURE It has been a pleasure to provide service to you on this project. If you have any questions, or require further consultation, please call us. ,14 G S. Yours very truly, COUVRETTE GEOTECHNICAL ENGINEERING, INC. (ipt 2 Q,O �275 9� S'fER J. S. (Julian) Liu, Ph.D., P.E. Associate 1 EXPIRES 7/ 17/ 9'Z I Three Copies Submitted Three Figures COUVRETTE GEOTECHNICAL ENGINEERING, INC. VICINITY MAP %•� ;f• N •'S:' r.°;:�r.1'';s°t," :-9•"r'' a'•• N. '.?v�.',: t .�t'. _I _: "- o• PCAYFIELDS�-168TST�? w.w O� "'" f"C '17 : �'.'�. �c .gyp .�..,•is yx, Y'.�F,St �i�'.x C �: �� y �t i1DOWDALE, r. ..•i`;j1 PROJECT N has HS 1.69 SITE sv! ion SW •. '� SEP s 172ND STi$ 173 •U1T3RD sr SW ��[� : b �P1. OAS, ""' j2N0 ' ,i"rSWr"'j RyMgR : o m PL S o Cy Z i - a, .:•O+ �-13RD �.S r-' ,174TH has a �SNI a, ^a SW STH �.' 17 a t ST' SW 17 s O�. �a.:,;;•,r�• w �v,. ,� ..� w +: +c,: �. [f: :Zt''`.�`'e`.^;=n• 176TH\ �Y n a "'� ;� ,`„"•....-,"..fi�.4 !. 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I� 0.'Tt'' 9 r �hY., ,�. a S w T FSW �,,; + a - e a ^�a,., t'• ro•, v'•� ,�. �..... ..'ue a��..., •�'t`. Y' ...-01iwi..•_i. .... COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE -NO. 394-01 FIGURE 1 PLOT PLAN (1" = 30') i � o „ ur,c.rrrc-�--T Ic �o ,e ASS � to �.SEahEs.,"F REFERENCE: UNDATED PLAN TITLED 'TERHUNE HOMES, INC., DUANE AND MAUDI SYSTAD," BY LOVELL-SAUERLAND AND ASSOCIATES, INC. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 2 GEOLOGIC MAP iii /� • Af ii % / A' r 1 , f PROJECT SITE IlrysJJ�G� ' REFERENCE: Geologic Map of the Edmonds East and Part of Edmonds West Quadranales, Washington, by J. P. Minard, published by U. S. Geological Survey in 1983. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 3 STREET RLE COVENANT OF NOTIFICATION AND INDEMNIFICATION/HOLD HARMLESS Under the review procedures established pursuant to the State Building Code, incorporating amendments promulgated by the City of Edmonds, and as a prerequisite to the issuance of a building permit for the construction of a residential structure and ' attendant facilities, the undersigned OWNERS of property do hereby covenant, stipulate and promise as follows: gubj2ct ivr.era.Z% iui:i wYCnan�. Cit notification and indemnification/hold harmless -.relates to a tract of land at the street address of 17006 74th Ave W (insert street address), Edmonds, Snohomish County, Washington and legally. described as: The east 194.0 feet, as measured along the north line of that portion of Tract 122, Plat of Meadowdale Beach, according to the plat thereof recorded in Volume 5 of Plats on page 38, records of Snohomish County, Washington, described as follows: Beginning at a point which is 642.0.feet N0°15'40"E, as,measured along the monument line of 76th Ave. W. and 20.02 feet east of the west quarter corner of Section 8, Township 27 North, Range 4 East W.M.; thence S8710610011E 633.74 feet to an iron pipe monument; thence S204813111E 135.0 feet along a line which extended intersects 172nd St. S.W. at an existing concrete monument; thence N8700815011W 640.95 feet to a point from which the point of beginning bears N001514011E; thence N011514011E 135.0 feet to the point of beginning; Situate in Snohomish County, Washington. 2. Notification and Covenant of Notification. The above referenced site (hereinafter "subject site") lies within an area which has been identified by the City of Edmonds as having a potential for earth subsidence or landslide' hazard. The risks associated with development of the site have been evaluated by technical consultants and engineers engaged by the applicant as a part of the -process to obtain a building permit for the subject site. The results of the consultant's reports and evaluations of WSS52079A/0006.040.034 -1- BUILDING t-,SS/klt 02/08/90 , FEB 9-1990 VOL. ` 7 6 `� PAGE 0 7 8 3 the risks associated with development are contained in building permit file number (insert number) on file with the City of Edmonds -Building Department.' Conditions, limitations, or.' prohibitions on development may have been imposed in accordance with the recommendations of the consultants in the course of permit issuance. The conditions, limitations, or prohibitions may require ongoing maintenance on the part of any owner or lessee or may require modifications to the structures 'and earth stabilization matters in order to address future or anticipated changes in soil or other site conditions. The statements and conditions proposed by the OWNERS' geotechnical engineer,' geologist, architect and/or structural engineer are hereby incorporated by reference from the contents of the file as fully as if herein set forth. Any future purchaser, lessee, lender or any other person acquiring or seeking to acquire an interest - in . the property is put on notice of the existence of the content of the file and the City urges review of its contents. The file may be reviewed during normal business hours or copies obtained at. the Planning Department, City of Edmonds, 505 Bell Street, Edmonds, Washington 98020. 3. Indemnification and Hold Harmless. The undersigned OWNERS hereby waive any and all liability associated with - development, stating that they have fully informed themselves of all risks associated with development of the property and do" therefore waive and relinquish any and all causes of action against the City of Edmonds, its officers, agents and employees WSS52079A/0006.040.034 WSS/klt 02/08/90 -2- VOL. Z 7 6 2 PAGE 0 7 on 4 arising from and out of such development. In addition, the OWNERS on behalf of themselves, their successors in interest, heirs and assignees, do hereby promise. to indemnify and hold harmless the City of Edmonds, its officers, agents and -employees from any loss, claim, liability .or damage of any kind or nature to persons or property either on or off the site resulting from or out of earth subsidence or landslide hazard, arising from or out of the issuance of any permit(s) authorizing development of the site, or occurring or arising out of any false, misleading, or inaccurate information provided by the OWNERS, their employees, or professional consultants in the course of issuance of the building permit. - 4. Insurance Requirement.. In addition to any bonding which may be required during the course of development, the Community Services Directorims/has not (strike one) specifically required the maintenance of an insurance policy -for public liability coverage in the amount and for the time set forth below in -order to provide for the financial responsibilities established through the indemnification and hold harmless agreement above: (insert insurance requirements and time period, if any --if no insurance required, so state.] WSS52079A/0006.040.034 WSS/klt 02/08/90 -3- Vol. ` 16 2 PAGE 0 o . 5. Covenant to Touch and Concern the Land. This covenant of notification and indemnification/hold harmless touches and concerns the subject tract and shall run with the land, binding, obligating and/or inuring to the benefit of future owners, heirs, successors and interests or any other person or entity acquiring an interest in property, as their interest may appear. This provision shall not be. interpreted to require a mortgagor or lender to indemnify the City except to the extent of their loss nor to obligate such persons to maintain the insurance above required. DONE this 16 4-� day of M Ate/ , 1993. STATE OF WASHINGTON ) \� ) ss: COUNTY OF cwa ) I certify that I that -DU4�.tiE SYSr"Ab MAVDi R , SYS`iA� OWNERS) know or have satisfactory evidence signed this instrument and acknowledged" WSS52079A/0006.040.034 -4- WSS/klt 02/08/90 IJ O U VOL. 2 7 6 2 PAGE 07 0 6 -TVA VAR it to befree and voluntary act for the purposes % , 1%11131188 g.%��EY G tinned in this instrument. TED this day of M A , 19 3. NANO% �9�•4'1�� NOT:MCO�My coexp es: SSTATE OF WASHINGTON ) ) ss: COUNTY OF ) I certify that I know or have satisfactory evidence that signed this instrument and acknowledged it to be (his/her) free and voluntary act for the purposes mentioned in this instrument. 110 DATED this day of 199—. c _ r r- NOTARY PUBLIC My commission expires: STATE OF WASHINGTON ) iv ) s s : COUNTY OF ) I certify that I know or have satisfactory evidence that signed this instrument, on oath stated that (he/she) was authorized to execute the instrument and acknowledged it as the (title) of (name of party on behalf of whom instrument was executed)- to be the free and voluntary act of such party for the uses and purposes mentioned in this instrument. .� DATED this day of 199_. NOTARY PUBLIC My commission expires: WSS52079A/0006.040.034 -5- WSS/k1t 02/08/90 0' o,10a VOL. 27*6 2 PAGE O 7 8 7 "v7�^d�'f`"�`i��'2s�?I"59'�'Fl"'�'1.�'v'Fv�16'K^^-�'^./"Zl�4trltr`r va�t`"r�"-``f /5��•�n�J �^Fn�%'�-'e"`"��i..�..�n'{+.�vY'+r�c'''s�'•y7%�'tr^r.,r.F �G.r°,^;llr fir �'C"'�g'>' RECEIVED CITY OF EDMONDS DEC , U 1993 SIDE SEWER PERMIT PUBLIC WORKS DEP7 PERMIT N0- 8542 Address of Construction: I I ba�o —1 Lft Ayr--' "" Property Legal Description (Include all easements): —�57-5Z^,000 77Z,2- 2 -0 Owner and/or Contractor: L �' -TS-T� State License No. /y t Building Permit No. LSingle Family f Invasion into City Right-of-Way:XNo ❑ Yes ✓❑ Multi -Family (No. of Units ) RW Construction Permit No. ❑ Commercial Cross other Private Property: X No ❑ Yes ❑ Public Attach legal description and copy of recorded easement I certify Hat I have read and shall corntly with all city requirements as indicated on the back of the Perm•i Card. 12- to Date * CALL DIAL -A -DIG (1-800-424-5555) BEFORE ANY EXCAVATION * I OFFICE USE..ONLY * FOR INSPECTIO ^y „;L, PUBLIC WORKS DEPT. Permit Fee: �� Issued By Trunk Charge: • ii,/(J Date Issued: Assessment Fee: Receipt No.: Z7 75�_'57 Lid No.: tirrl!07 Partial Inspection: Date Initial. Comments Reason Rejected: Date Initial Final Inspection Approved: Date,/-Z Initi !!21'— ** PERMIT MUST BE POSTED ON JOB SITE ** White Copy: File Green Copy: Inspector . Bull Copy: Applicant Revised 3!90 Side Sewer Drawing The City of Edmonds EASEMENT NO_ _____________________ NEW CONSTRUCTION [ REPAIRS ❑ LID NO_ _______________ _ASMT. NO. -_.__.-_._....-.-�' OWNER----•-•-------------•--•---•----•--•---•---------•---.-------------••--•--•-----•--------------- CONTRACTOR ---------------------------- --------------------- PERMIT NO._�/ JOB ADDRESS ___Q_ �!'..'.__._t_`"I" .._._.._ JA -,. LEGAL DESCRIPTION: LOT NO. ........ •-------•----•--.----.._...... BLOCK NO. ------•--------.•---------•---.----. L4 PWW-0001-11/75 (REV.11/78) F NAMEOF ADDITION ----------------------------------------------------------------------------------------------------------------------- 5' 220 2� LYNNWOOD LINE r L}Ii �V.0 Co 3 i r 2 t>«P . Approved: DATE --......t c) BY G -� ---- — STREET FILE City of Edmonds Critical Areas Determination Applicant: Systad, Duane Determination #: CA-92-185 Project Name: Permit Number: Site Location: 17006 74th Ave. W. Property Tax Acct #: 5131-000-122-04 Project Description: Waiver Criteria (all criteria must be found to apply): XX There will be no alteration of the Critical Area or its required buffers; XX The development proposal will not impact the Critical Area in a manner contrary to the goals, purposes, objectives and requirements of the Critical Areas ordinance; XX The development proposal meets the minimum standards of the Critical Areas ordinance; XX The above findings are based on the following conditions of approval: 1. The applicant must follow the requirements of the Building Official for construction on steep slopes (ECDC title 19.05, 19.00-LTBC chapter 70). 2. The applicant must follow the requirements of the Engineering Division for erosion control (ECDC title 18). Based on the above findings and conditions, the requirement for a Critical Areas Study associated with this development permit is hereby Waived, as authorized by Chapter 20.15B.150 (B) of the Edmonds Communit Developme de. Stephen F. Bullock Name Sig ture faote/ 1 I4890 19�0 City of Edmonds Critical Areas Checklist The Critical Areas Checklist contained on this form is to be filled out by any person preparing a Development Permit Application for the City of Edmonds prior to his/her submittal of a development permit to the City. The purpose of the Checklist is to enable City staff to determine whether any potential Critical Areas are or may be present on the subject property. The information needed to complete the Checklist should be easily available from observations of the site or data available at City Hall (Critical Areas inventories, maps, or soil surveys). An applicant, or his/her representative, must fill out the checklist, sign and date it, and submit it to the City. The City will review the checklist, make a precursory site visit, and make a determination of the subsequent steps necessary to complete a development permit application. With a signed copy of this form, the applicant should also submit a vicinity map of the parcel with enough detail that City staff can find and identify the subject parcel(s). In addition, the applicant is encouraged to include any other pertinent information or studies in conjunction with this Checklist to. assist staff in completing their preliminary assessment of the site. I have completed the attached Critical Area Checklist and attest that the answers provided are factual, to the best of my knowledge (fill out the appropriate column below). Owner / Applicant: E ) Name Title Street Address City, State, ZIP Phone Signature Date Applicant Representative: Name,2'L/F' S" E-,e f /iJ)U, CS Title Street Address City State Z Phone Signature Date ., . - I 0, , Critical Areas Checklist' Site Information Project Name: S`� _I �� Permit Number. Site Location: 1 ^?00(c -7 Property Tax Account Number. S2 3 Lo OC, -1 Z Z o4j O G Approximate Site Size (acres or square feet): Have you filled out a Critical Areas Checklist for a project on this site before? General Site Conditions \,� S 1. Has the site been cleared or logged? 1 Date of most recent action Soils / Topography _ p 2. In the Snohomish County Soil Survey, what is the mapped soil type(s)? iJb'Luzzc1 3. Describe the general site topography. Check all that apply. <0�u Flat: less than 5 feet elevation change over entire site. �"5 -,Rolling-. slopes on site generally less than 15% (a vertical rise of 10 feet over a horizontal distance of 66 feet.) Hilly. slopes present on site of more than 15% and less than 30% ( a vertical rise of 10 feet of horizontal distance.) Steep: grades of greater than 30% present on site. Comments Hydrology/Vegetation 4. Site contains areas of year-round standing water: �Jo 5. Site contains areas of seasonal standing water. Goa Approx. Depth: 6. Site is in the floodway floodplain IA-y of a watercourse. 7. Site contains a creek or an area where water flows across the grounds surface? ��flows are year-round? Flows are seasonal? 8. Site is primarily: forested ; meadow ;shrubs ; mixed 9. Obvious wetland is present on site: rv, 0 n 10. Wetland inventory or map indicates wetland present on site: 11. Critical Areas inventory or map indicates any Critical Area on site: ie!!�_ For City Use Only Z5 Trl- u Li E . = -: AGTUAL.DE--.303�5' ",,y" Q�� IAA.x - 305, o o n�� i I -ILL op �L �gp 10 ��=z�� • s=�84.2� I ..� p VA CD ' O {--T _ U) W Q I ! o _ 1q¢;00 d SE UTIL TlES � f no.-ru r I # wIrIH � _... Ppi NT fj-24- iZ • The east D4.0 feet, as measured along the north line of that portion of Tract 122° riot of Meadowdale Beach, aiCCordTr,g t0 fhe plat thereof r recoded in Volume 5 of plats on page.0, reavrds• a# Snohomish County, Washing9ton, described as follows: &"inning at a point which is 642.0 feet NO' 15'40"E,as measured along the monunant line of 76th Ave. W., and 20.02 feet east of the west quarter corner Section 8, Township 27 North. Ran96 4 East W.M.; thence 587006'00"E633.74,feet to an iron pipe monument; thence S2.48'31"E 135.0 feet alpn" a line w�i?�Fi extended intersects 172nd St. S.V. at an exlsTjn9_concrete monument; thence N87'08'50"W 640.95 feet to a point from which the point of beginning bears NO'15140"E; thence N0°15'40"E 135.0 feet to the point of beginning; . Situate in Snohomish County, Washington. *`IAX i io, 513i-cco-=Z-c4co - NOV 1.0 1992 STREET Fk-, PUBLIC WOR PROJECT REVIEW CHECKLIST EP PROJECT NAME: PLAN CHECK #:97 PROJECT ADDRESS: 1%0(o ��/�, RECEIPT DATE: %/ =— REVIEW D BY: (Initial PLAN. WATER `COMMENTS FIRE SLOG. SEWER STREET ENG..:: et ac s ariance/Setback Adjustment :r.. •:::.••.•• v.:,• •,••�, :, ;,: `'.<;t�{:• Conditional Use Permit • {., ire ADB Requirements 'x:<::< Other Zoning Requirements Underground Wiring Required " " 2 Lot Slope 1 S% > ' -.6 SEPA Environmental Checklist/Hydraulics Permit ,,. 7 Tree CuttingPlan .+J.•`+/.•s'{,..... iv>::i%•:J:':jvi:Y:':::i4h:�.J. �4}').i _. g Plat/Subdivision Requirements Legal Description Verification Quit Claim/Street Dedications Easements - Public/Private :. �2 Engineering Storm Drain Review Fee 3a" Engineering 2.2 Inspection Fee Drainage Plan On -Site Setback - Top of Bank, Stream, Water Courses Setback - Storm Drain Line ` h....:, 16» T7 :. Open Ditch - Existing Culvert Required ..`. yy ( Culvert Size%'K.,. .' k. 2p ,r ..{ .. ` Shoulder Drainage/Shale Open Runoff •• � •,,: • •• •.: �,• • •• ...r . ••• .: .. ... 21 Catch Basin Required ::,•,,."' f, ,.•.�;:.h::,; 22 Driveway Slope & Vehicle Access '<::.;;;�v,:........:..:•:...::......:.; . ;,:::.:`' ;<:;23 Sidewalk Required .. 24 Curb & Gutter Required Curb Cut For Driveway Required Street Paving RequiredF Right -Of -Way Construction Permit Required :27: 2..8: Street Name Sign Required Other Signing Required Bond Required For Public Improvements ry{.'..vr" FEMA Map Check/Water Table Side Sewer Availabilit'., Calculate Sewer Connection Fee If No LID # y '3S . Create Street File f" Existing Water Main Size Water Meter Size ,. �;:, Service Line Size Water Meter Charge Required Hydrant Required "` H drant Size Existing 3, ' - Fire Line Charge Required - Sprinkler :f Street CutA::Y::Yfvf Miscellaneous Reviewed By: FIRE PLANNING ENGINEERING STREET FILE I PUBLIC WORKS PERMIT APPLICATION REQUIREMENTS TO: Permit Coordinator, Building Division FROM: Lyle Chrisman, Engineering Inspector OWNER: -SYs7-'e--1 ST' b. &; HLE PLAN CK # ADDRESS: ('7DATE: 1t MC, After review of the subject permit application, the following requirements mustbe met. 1. Construction hours are: WEEKDAYS .......... 7:00 A.M.-10:00 P.M. WEEKENDS/HOLIDAYS ..... 10:00 A.M.-6:00 P.M. 2. A separate RIGHT-OF-WAY- Construction Permit is required for all work on Publicproperty. (ECDC 18.60) 3. Truck haul route plan must be submitted and approved prior to permit issuance. 4. Builder/Owner is responsible for containing all temporary runoff and erosion control on site. (ECDC 18.30.030d) S. NO WORK SHALL BE DONE WITHIN IS FEET OF STREAMS OR 10 FEET FROM ANY CLOSED DRAINAGE FACIL- ITY. BUILDERIOWNER IS REPSONSIBLE FOR IDENTIFYING CONDITIONS ON THE DRAWING. (ECDC 18.30.50G) 6. FILTER FABRIC FENCE SHALL BE INSTALLED AND INSPECTED PRIOR TO CLEARING AND CONSTRUC77ON. (ECDC 18.30) 7. INSPECTIONS ARE REQUIRED ON STORM DRAINAGE SYSTEMS, TIGHTLINFS, FOUNDATION DRAINS, AND CATCH BASIN INSTALLATION. INSPECTIONS ARE REQUIRED PRIOR TO BACKFILLING. (ECDC 18.30) . 8. Repair or replace all defective existing curb, gutter, and sidewalk adjacent to the property. If an intersection is involved a handicap ramp may be required. Contractor shall meet with the City Engineering Staff to determine the extent of repair prior to issuance of the permit. (ECDC 18.90) ' 9. Driveway slope shall not exceed 14 % without a waiver. Every attempt should be made to keep the slope below 14%. Waiver granted to %. (ECDC 18.80.060D) 10. Driveways must be paved from property line to City RIGHT-OF-WAY. A separate perimit is required. (ECDC 18.80.060C) 11. INSPECTIONS ARE REQUIRED ON DRIVEWAYS AND SIDEWALKS PRIOR TO AND AFTER POURING. (ECDC 18.30) 12. No burning of construction refuse without a permit from the Fire Department. 13. Connection to City water system is required. There is a separate charge for the water meter. (ECDC 7.30) 14. A back water valve is required if downstairs plumbing is below the elevation of upstream manhole. (ECDC 7.20) 15. Water and sewer main lines should be separated by 10 feet minimum. (ECDC 18.10) 16. Connec 'o t the City sanitary system is required. A separate permit is required. LIDS Fees paid: Yes No Charge .55 ^tl (ECDC 18.10) 17. Underground wiring is required on all new construction; and for additions, alterations, and repairs that exceed 50% of the total assessed value of the structure. (ECDC 18.05.010) 18. A FINAL ENGINEERING INSPECTION IS REQUIRED PRIOR TO THE BUILDING DIVISION GRANTING OCCU- PANCY OF THE BUILDING OR STRUCTURE. (ECDC 18.90) 19. STREET FILE COUVRETTE STREff FILE GEOTECHNICAL ENGINEERING, INC. KI 0 V 3 0 1992 PERMIT COUNTER 17311 - 135TH AVENUE NORTHEAST, #A500 - WOODINVILLE, WASHINGTON 98072 - (206) 486-1669 Mr. Duane Systad 9028 - 7th Place West Everett, Washington. 98204 Dear Mr. Systad: November 23, 1992 Letter Report Geotechnical Evaluation Proposed Single -Family Residence 17006 - 74th Avenue West Edmonds, Washington File No. 394-01 INTRODUCTION This letter report presents the findings and recommendations of our geotechnical evaluation of the site at the above address, on which you are planning a single-family residence. The purpose of this geotechnical evaluation is to present our findings to allow you to petition the City of Edmonds for waiving the requirement of Chapter 19.05 of the Edmonds Community Development Code, and to provide general recommendations for site development and foundation design for the proposed development. The site is located in Edmonds, Washington, as shown on the Vicinity Map, Figure 1. For our use in this evaluation, we were provided by Lovell-Sauerland and Associates, Inc. with an undated plot plan titled "Terhune Homes, Inc.,: Duane and Maudi Systad," which is presented in Figure 2. We understand the planned residence will have a basement which will be below grade on the east side and daylighted on the west side. SCOPE OF SERVICES Specifically, our scope of services includes: 1. Review the geologic and soil conditions at the site based on published geologic maps, 2. Provide general recommendations for site development and foundation design. and, 3. Prepare a written report to document our findings and recommendations. i Mr. Duane Systad November 23, 1992 File No. 394-01 Page 2 SITE CONDITIONS SURFACE CONDITIONS A geotechnical engineer from our office visited the site on November 18, 1992. The site is 7V4h approximately rectangular in shape, totalling about 0.6 acre. .It is fronted on the east by 3* Avenue West, and bounded on the north, south and west by single-family residences. The topography in the vicinity of the site generally slopes moderately to steeply from the east to the west, with a gentle cross slope down from the north to the south. Within the lot the ground slopes from the east to the west generally in gradients of 33% or less, with local gradient slightly over 40% near the northwest corner. The total topographical relief across the lot is about 40 feet, from a high point at the northeast to a low point at the southwest corner. The lot has previously been cleared. Presently the lot is mostly covered with wild grass, with a thick growth of berry bushes along the western boundary. A depressed area in the northeast portion of the site was observed during our site visit, which may be the result of soil being removed previously from the site. Signs of slope instability, such as surface tension cracks, erosion channels, water seepage, recent soil movement, etc., were not observed at the site. GEOLOGIC AND SOIL CONDITIONS The Geologic Map of the Edmonds East and Part of the Edmonds West Quadrangles. Washin on, by ]. P. Minard, published by U. S. Geological Survey in 1983, was referenced for the geologic and soil conditions at the site. According to this map, the surficial soil unit covering the site and its immediate vicinity is mapped as an advance outwash deposit (Qva), as shown in Figure 3. It was deposited by meltwater flowing from the advancing front of the glacier. The advance outwash consists mostly of gray, clean, well -drained, stratified gravelly sand. The sediments typically coarsen upward. Fine-grained sand and some silt are common in the lower part of the unit and may occur sparingly in the upper part. The upper portion of the advance outwash may be stained by iron oxide precipitated from groundwater. The advance outwash in its undisturbed state is generally medium - dense to dense, and is capable of supporting light residential structures without excessive settlement. A shallow pit dug manually in the central east area of the lot encountered a tannish -brown to brown, dense, gravelly sand, overlain by about 12 inches of root mat and topsoil. In the central west area, a gray -brown, medium -dense, gravelly sand exposed on the surface was observed. COUVRETTE GEOTECHNICAL ENGINEERING. INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 3 GROUNDWATER CONDITIONS We were informed by Mr. Brian Mercil of Lovell-Sauerland that water seepage had been observed near the southwestern corner of the site and a French drain was installed along the western boundary to drain the water. The seepage was probably due to the groundwater perched on top of the more silty strata at depths and emerged out of the slope at the lower elevation of the site. The groundwater level at the site will fluctuate seasonally, depending on precipitation, surface runoff, ground cover, and other factors. Higher groundwater level can be expected during the wetter months of the year. CONCLUSIONS AND RECOMMENDATIONS GENERAL Based on the subsurface conditions observed at the site and the geologic and soil conditions indicated in the above geologic map, it is our opinion that the site is suitable for the planned development from the geotechnical viewpoint. A subsurface exploration of the site will not be required if the following guidelines for site development and foundation design are followed. SLOPE STABILITY The site is outside the Meadowdale slide area as shown on the Landslide -Hazard Map prepared by GeoEngineers Inc. The advance outwash at the site is generally dense and well -drained. It is our opinion that the potential for soil movement to occur at the site should be relatively low. Z SITE PREPARATION AND GRADING The site preparation should include clearing and grubbing within the construction limits. The surficial root mat and the topsoil within areas of the building and driveway should be stripped. After the surficial unsuitable soils have been removed and the site excavated to grades, the exposed surface should be compacted .to a non -yielding condition using a self-propelled vibratory compactor. Any new fill required should be placed and compacted as outlined in the STRUCTURAL FILL section of this report. . EROSION CONTROL Due to the well -draining nature of the advance outwash at the site, it is our opinion that the erosion hazard of the site should be relatively low. Disturbance to and. removal of existing vegetation at the site should be minimized. The vegetation disturbed or removed outside of the construction limits should be re -seeded or re -planted as soon as practical. The new vegetation should be of species capable of adapting to the site environment and should be maintained until they are fully established. COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 4 A layer of jute netting or other erosion mat may be placed in areas removed of vegetation to reduce -erosion potential and to help the new vegetation take hold. A silt fence should be erected along the downhill side of the construction to contain sediments that may be washed down the slope. EXCAVATION AND FILL SLOPES Excavation up to about 10 feet in depth may be required along the eastern face of the proposed building. Under no circumstances should temporary excavation slopes be greater than the limits specified in local, state and national government safety regulations. The on -site sandy soils are generally cohesionless, and can cave suddenly without warning when excavated in overly steep slopes. Temporary cuts greater than four feet in height should be sloped at an inclination no steeper than 1.25HAV. The above slope inclination is only applicable to cuts above groundwater table. The total height of excavation at the above -recommended slope should not exceed 15 feet. If groundwater is encountered. during excavation, the construction work should be immediately halted, and we be informed to evaluate and revise the cut slope as necessary. Surface runoff should not be allowed to flow uncontrolled over the top of cut slopes into the excavated area. Exposed cut slopes should be covered with plastic sheets during periods of rain to minimize erosion and sloughing. If slopes of these inclinations or flatter cannot be achieved or if excavations greater than 4 feet in depth are required, temporary shoring would be required. Recommendations for shoring design are beyond the scope of this report. Permanent fill embankments constructed in accordance with the STRUCTURAL FILL section in this report should be inclined no steeper than 2.5HAV. All permanently exposed slopes should be planted with appropriate species of vegetation to reduce erosion and improve the stability of the slopes. The vegetation should be maintained until it is established. BASEMENT WALLS Basement walls should be backfilled in accordance with the recommendations provided in the STRUCTURAL FILL section of this report. Basement walls restrained horizontally on top are considered unyielding and should be designed for a lateral soil pressure under the at -rest condition. Basement walls restricted at the top from rotation and with level backfill should be designed for a lateral soil pressure of 65 pounds per cubic foot (pcf) equivalent fluid weight (EFW). We would be available to provide you with the design lateral pressure if sloping ground surface behind walls is used. Backfill material within a horizontal distance of 15 inches of the basement walls should be of a clean, free -draining, granular, structural fill, containing no more than 5% by weight of fines passing the No. 200 sieve, based on the fraction passing the No. 4 sieve. This free -draining backfill should be COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 5 compacted to the minimum dry density recommended in the STRUCTURAL FILL section of this report. The top 12 inches of backfill should consist of compacted, relatively -impermeable, on -site soils. The backfill material for the basement walls should be compacted with a hand -operated compactor. Heavy compaction equipment should not be allowed within a horizontal distance from the wall equal to the wall height. FOUNDATIONS Conventional footing foundations may be used to support the planned building. Footing foundations should be placed in the undisturbed, dense outwash deposit. Standing water should not be allowed to accumulate in footing trenches. All loose or disturbed soil should be removed from the foundation trenches or properly compacted prior to pouring concrete. Exterior footings should extend at least 18 inches below the adjacent ground surface and interior column footings 12 inches below the bottom of adjacent slab. Minimum foundation widths of 16 and 24 inches should be used for continuous and individual spread footings, respectively. For footings recommended above, an allowable soil bearing pressure of 2,500 psf (pounds per square foot) may be used for the footing design. A one-third increase in the above allowable bearing pressures may be used when considering short-term transitory wind or seismic loads. Structural loading information was not available when this report was prepared. Based on our experience of single-family residential structures supported on similar soil conditions and for the above. allowable soil bearing pressure, we estimate that the maximum total post -construction settlement should be 3/4 inch or less and the differential settlement across the building width should be 1/2 inch or less. Dz; -0 1 7 Lateral loads can be resisted by friction between the foundation and the subgrade or the passive earth pressure acting on the below -grade foundation. For the latter, the foundation must be poured "neat" against the undisturbed soil, or backfilled with a clean, free -draining, compacted structural fill. We recommend that an allowable lateral passive pressure of 250 pounds per cubic foot (pcf) equivalent fluid weight (EFW) and an allowable coefficient of friction of 0.35 between the footings and the soils be used. These values include a safety factor of 1.5. The ground behind the basement walls should be level or sloping upward for a horizontal distance at least 3 times the basement wall embedment depth, in order to fully develop the above passive pressure. STRUCTURAL FILL Structural fill is the fill material under footings, slabs -on -grade, pavements, and behind retaining walls where the underlying soils support loads. The structural fill should consist of clean soils with COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 6 particles no larger than four inches and should be free of organic and other deleterious substances. The structural fill should . be placed with a moisture content near its optimum moisture content. The optimum moisture content is the water content in the soil which allows the soil to be compacted to the highest dry density for a given compaction effort. The on -site clean gravelly sand soil with little fines is suitable to be used as structural fill. The on -site soil contains excessive fines should only be used under dry weather conditions. Imported structural fill, if required, should be of clean, free -draining, granular soil containing particles no more than 5% (by weight) finer than the No. 200 sieve based on the fraction of the material passing No. 4 sieve, and should have individual particles not greater than 4 inches. Imported structural fill should be stockpiled separately from the on -site soils and covered with plastic sheets to prevent rainfall infiltration. a The structural fill should be placed in lifts of no more than 10-inches in its loose state, compacted to a minimum percentage of the maximum dry density determined by ASTM D1557-78 (Modified Proctor Method) as follows: Application Under footings, slabs and walkway Roadway/driveway/parking area subgrade % of Maximum Dry DensitX 95% 95% for top 12 inches and 90% below We recommend that Couvrette Geotechnical Engineering, Inc. be retained to evaluate the suitability of imported structural fill, if required, and to monitor the placement and compaction operation during construction for quality assurance of the earthwork. SLAB -ON -GRADE FLOORS Slab -on -grade floors should be placed on firm subgrade prepared as outlined in the SITE PREPARATION AND GRADING and the STRUCTURAL FILL sections of this report. Where moisture control is critical, the slab -on -grade floors should be placed on a capillary break which is in turn placed on the compacted subgrade. The capillary break should consist of a minimum four -inch - thick layer of free -draining gravel containing no more than 5% (by weight) passing the No. 4 sieve. We recommend that a vapor barrier such as a 6-mil plastic membrane be placed over the capillary COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 7 break to keep moisture from condensing on the bottom of the slabs. Two to four inches of sand may be placed over the vapor barrier to aid the curing of the concrete. SITE DRAINAGE Surface Drainage: The ground surface should be graded such that surface water is directed away from buildings. Water should not be allowed to stand in any area where footings, slabs, or pavement are to be constructed. The final ground surface should be sloped at a gradient of 3% minimum for a distance of at least ten feet away from buildings, except in the areas that are to be paved. Surface water should be collected by permanent catch basins and drain pipes and be discharged into a. permanent storm sewer. Subsurface Drainage: Should groundwater seepage be encountered during construction, we recommend that the contractor slope the bottom of excavation and collect the water to ditches and --- — wKVRF— small sump pits, from which the water can be pumped and discharged into a permanent storm drain. A footing subdrain system should be installed around the perimeter of the planned building. The subdrain should consist of a four -inch -minimum -diameter, perforated or slotted, rigid PVC pipe, laid a few inches below the bottom of the footings, with a gradient sufficient to generate flow by gravity. The footing subdrain should be tightlined to discharge into a permanent storm dra' {system. bC—. X4,V Under no circumstance should roof drains be connected to the footing drain system. The roof downspout drain system must be separately tightlined to discharge. The footing drain system should have a minimum of 12 inches of vertical fall before it is tied into the storm sewer system. We recommend that sufficient cleanouts be installed at strategic locations to allow for periodic maintenance of the footing and the downspout drain lines. USE OF REPORT This report is prepared for specific application to this project and is for the exclusive use of Mr. Duane Systad and his consultants and representatives. This report, in its entirety, should be provided to prospective contractors for their estimating and bidding purposes, but our report, conclusions and interpretations should not be construed as a warranty of the subsurface conditions. The scope of our services 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 this report for consideration in design. We have not performed any subsurface explorations at the site. Our conclusions and recommendations are based on the site surface conditions observed, geologic and soil conditions COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 8 indicated on the above geologic map, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manner consistent with the level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. No warranty, expressed or implied, is made. The soil and groundwater conditions described in this report may .vary from those actually encountered at the site during construction. The nature and extent of such variations may not become evident until construction. If variations appear then, Couvrette Geotechnical Engineering, Inc. (CGE) should be retained to re-evaluate the recommendations of this report, and to verify or modify them in writing prior to proceeding with the construction. ADDITIONAL SERVICES Detailed design plans for the proposed development were not available at the time this report was prepared. We recommend that CGE be retained to perform a general review of the final design and specifications for the proposed development to verify that the earthwork and foundation recommendations have been properly interpreted and reflected in the design and construction documents. We also recommend that CGE be retained to provide monitoring and testing services for the geotechnical portion of the construction work. This is to verify the subsurface conditions at the site and to observe compliance with the design concepts, specifications or recommendations. It will also allow for design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. CLOSURE It has been a pleasure to provide service to you on this project. If you have any questions, or require further consultation, please call us. G S. I 5 9� SfBR ��NAL I EVIRES 7 / 17 / 91 I Three Copies Submitted Three Figures Yours very truly, COUVRETTE GEOTECHNICAL ENGINEERING, INC. J. S. (Julian) Liu, Ph.D., P.E. Associate COUVRETTE GEOTECHNICAL ENGINEERING, INC. VICINITY MAP EL 2 F >iitikrt7^� " J xr'tM OWVALEk3rr;^- � tM168T QS ADOWDAL f 'K �. YST- E)� - '� > FF�-- • f M l sY ^, ram_ PROJECT N , - ., HS , .¢ 1.69 `- �' js'Ao 4� � •j. P ,2N tl,6 SITE v r%pxCw y, ,.•+�•v^.. •lf •'!'rr��'i, :d'r, io7n— x.;� r•`N+tip4�P :',� 1707HT' 1. •$ S„G G ,f. Vic. ,Fg a W �a , 71,. ;��" t:1°sy®Mw. 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'.y: per sx,A• 'F} o « +,r .an Z riARK''�ry1• _`r194T Il -: S I r+ L y a '!S �r tSW SCRIBE r4 S^ P SW 195TH ~4 /' �cc aLl:l N AM� � �� ^a7 � • �rt'Yf • .. a tv! > s«+S gW�I.� [Q� 'nYR� q Q3v� r"+17•• f' -5i,'i .S M :1. a - Cb r' ;l; , l[ Ln .ti. Ln d ! f r !i •a e "r.= - �',;' ~ t�- s ,. ,ll 196Tjj P SW • _ .3eN�ewir *,0 i f—� y �• p p� 1 a. W (l�IL8ERT"` 197TIi t ti SWr, r"`.' r` _.• ..J ';:' tea•» ": .Q .,...:. - b+� � vG. t,. r e°'+ r i+ ei; -{ e'T�#'"d �� '++k ell .,,y+.�w��Y�. f i,''"t• eti i.a . c .i., „�., Q r� •t� V n 8 i}i, � c ! • 98TH�sxs w. I� '19 TH ST SW •...�o{ r• �� Ste:-Y`:5-ri � Y "� rs^f <t(V �r, , �. , arms COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 1 PLOT PLAN (1" = 30') t .. w N Pit- s � - o 1 1 I r� k s 11 REFERENCE: ' " r- UNDATED PLAN TITLED-TERHUNE HOMES, INC., DUANE AND MAUDI SYSTAD.- BY LOVELL-SAUERLAND AND ASSOCIATES, INC. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-61 FIGURE 2 GEOLOGIC MAP . 1 I (f • • , ..i_ _. _ _ FYI - ,,. Ir - .,F•� y,7_I. •. _ •t,--t° ••1 icy, • .•. �+� .. �. •'.•i er � ..�e.{v�' ,°.I Yy a 1•,'.�!• •'9--••FI ,'f �S'Y _,}•• v - r .�"1"..;,u�•1' 1`r '`r,.• _i.•'.. Q15 ; •1- r`�r`e. ill � •. `,'. �. • - - 1 71..••, ,. I '�':', ••`•` - ''' is ! •s� �; : / � i�! .t _ i�.� •••. �S'I I_ 1//, 1/ '•4� if �f/L/', tit i - - - ''': •'�'...a;'�:�•�/''-'; , // � St /� .\ Ills /.1�� 7 IL -•,•.,��"`,•.. v ,..'_.�...,♦ C !i is :i• ./?` � i A '` ' t�.♦a �',,,•.+ ..!-•t�.w'f^ L4i�.�;� 11 'Y a. �`��•:•� �+i._ �'f'; p'.'.!+ •w '•,�. �•J`,r It zz �. 1 1 i +�:VFV \.... ,•� ,;fir;.. ,,_ ,•tit 'x 'r:' _: •�-_...,�..'" � �\ � �/ - � t REFERENCE: Geologic Man of the Edmonds East and Part of Edmonds West Quadrangles Washington, by J. P. Minard, published by. U. S. Geological Survey in 1983. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 3 r �1 tiao.uass i M Y I.�—, CCITY OF EDMONDS USE PERMIT zoNs _ 7� NUMBER g 30q �6 CONSTRUCTION PERMIT APPLICATION JOB SUITE/APT a ADDRESS � 42 -,eli`-&' ') OWNER NAME/NAME OF BUSINESS w - \ \ LEGAL DESCRIPTION CHECK SUBDIVISION NO. LID NO.-o, MAILING ADDRESS PUBLIC RIGHT OF WAY PER OFFICIAL STREET MAP. EXISTING REQUIRED OEOICATION PROPOSED TESCP Approved ❑ RW Permil Required Street Use Permil Req'd - ❑ Inspection Required BSI Sidewalk Required It, O Z O `�� v I CITY ZIP TELEPHONE NUMBER 1 C --•T� `,_ / ' 1 u �" L �� -��" •a (' r NAME REMARKS O U•e,'• ADDRESS CITY ZIP TELEPHONE NUMBER �` NAME U0 J -,,oF r/ E-r\ , �I ENGINEERING MEMO DATED / REVIEW BY '' , METER SI E j1 BUILDING SUP LY SIZE / NO. OF FIXTURES w CITY 21P TELEPHONE NUMBER ZO O l- ti�'. �'? !j ' C' - 4.f �, REMARK/- 9 v $[�J STATE LICENSE NUMBER EXPIRATION DATE E- r '_� ,- 9 SIGN AREA ALLOWED PROPOSED N SEPA RE IEW COMPLETE EXEMPT ADD NO. / - HORELINE a Z Legal Description of Property - include all easements ° EX P a 0 VARIANCE OR CU P N N�,REVIEW BY GATE w PropeAy Tax Account 7 Parcel No. S `, T� SETBACKS - FEET HEFT FRONT�i� SIDEI"- / REAR-L L"� L07 COVERAGE i � � 77 Z EMARK NEW RESIDENTIAL PLUMBING ADDITION COMMERCIAL MECHANICAL `( (, /G REMODEL APT.BLDG. SIGN ElREPAIR �J CYOS. D II FENCE x—rn CHECKED BY TYPE OF CON�i� TION CODE / HEIGHT J ; 0 a DEMOLISH El NSERTTOVE ElSWIM POOL HOT SPA ® GA Zf ❑ ROCKERY WALL/ RENEWAL l SPECIAL INSPECTOR REQUIRED YES AREA OCCUPANCY GROUP 46! J' i� OCCUPANT LOAD REMARKS PROGRESS INSPECTIONS PER UBC 305 c (TYPE OF USE. BUSINESS OR ACTIVITY) EXPLAIN: S F NUMBER OF ST RIES NUMBER OF o In DWELLING CIA, UNITS DESCRIBE WORK TO BE OON (ATTACH PLOT PLAN) L Cy1/ g'y _S Gil/ C FINAL INSPECTION REQUIRED P /-�l �// r • ` OnN�T / VALUATION FEE % ! r 5. 41",,44 15Yr PQTP�y C/Y PLAN CHECK FEE BUILDING ll (/ I'1�D 0PLUMBING HEATSOURCE: r �/ 4 GLAZING dtD 7 Plan Check N 174 T / MECHANICAL This Permit covers work to be done on private property ONLY. Any construction on the public domain (curbs, sldewPlks, GRADINGIF.ILL,f, STATE SURCHARGE SD driveways, marquees, etc.) will require separate permission. Permit Application:180 Days Permit Limit: 1 Year - Provided Work Is Started Within 180 Days STORM DRAINAGE FEE 3U "Applicant, on behalf of his or her spouse, heirs, assigns and ENG. INSPECTION FEE 30 N u, successors in interest, agrees to indemnify, defend and hold harmless the City of Edmonds, Washington, its officials, aemployees, and agents from any and all claims for damages of PLAN CHECK DEPOSIT a = whatever nature, arising directly or indirectly from the Issuance of this permit. Issuance of this permit shall not be deemed to modify, waive or reduce any requirement of any city ordinance TOTAL AMOUNT DUE i nor limit in any way the City's ability to enforce any ordinance provision. " I hereby acknowledge that I have read this application; that the ATTENTION APPLICATION APPROVAL information given Is correct; and that I am the owner, or the duly authorized agent of the owner. I agree to comply with city and THIS PERMIT This application is not a permit until state laws regulating construction; and in doing the work authoriz- AUTHORIZES ed thereby, no person will be employed in violation of the Labor ONLY THE signed by the Building Official or his/her Code of the State of Washington relating to Workmen's Compensa- WORK NOTED Deputy; and fees are paid, and receipt is lion Insurance. INSPECTION acknowledged in space provided. SIGNA RE (OWNER OR AGE DATE SIGNED DEPARTMENT CITY OF 0 I 1 L'S SI NATURE DATE 19 J�f /9 A Z EDMONDS /G ' �/�� ATTENTION CALL FOR RELE SE B ;� J DATE INSPECTION C_ ,/' ; /` :�j/ -•� IT IS UNLAWFUL TO USE OR OCCUPY A BUILDING OR STRUCTURE UNTIL A FINAL INSPECTION HAS BEEN MADE AND APPROVAL OR 771-0220 ORIGINAL - File YELLOW - Inspector A CUPTlrICATE OF OCCUPANCY HAS BEEN GRANTED. UBC 1a LE-:GTAL 6ea AlTA64AMP tiF ti10� �� 253Lk. l <1 APPROVED BY PLANNIN 1 4. �r- 275.5' + ►►-.GP-92 NI -IC WrA Zee'GA�c-s � = 283.oll o AVE ogAos := 7-7,9, OI ACTUAL = 3OB. 76' //,A.% = 3a4, o l T11*'° 29 t p— I I I " I Iw I N D121vE WAY Q I I 4 _ ; 1 I c c 8's � SLOPE 24 tee" I \ -- A=285' f �1�cn I '`� E UTIL Tl�� P/. �17A-r287� I RECEIVED C�1V�D � i SEP 0 1 1993 PERMIT COUNTER 0TRT FILE alkD1N0 APR 0 61ys CITY OF EDMONDS 250 5TH AVENUE NORTH, EDMONDS, WA 98020 (206) 771-3202 RCW 197-11-970 Determination of Nonsignificance (DNS) DETERMINATION OF NONSIGNIFICANCE Description of proposal: New Single Family Residence Building Plan Cheeck # 974 Proponent: Duane Systad Location of proposal, including street address if any: 17006 74th Ave. W. Lead agency: CITY OF EDMONDS The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement is not required under RCW 43.21.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. XX There is no comment period for this DNS. This DNS is issued under 197-11-340(2); the lead agency will not act on this proposal for 15 days from the date below. Comments must be submitted by .1993. Responsible Official: Jeffrey S. Wilson Position/Title: Current Planning Supervisor, Department of Community Services - Planning Division Phone:. 771-0220 Address: City of Edmonds, 250 Sth Avenue North, Edmonds, WA 98020 Date: 3/ 2-1Q 3 Signature: XX You may appeal this determination to Robert Chave, Planning Manager, at 250 5th Avenue North, Edmonds, WA 98020, no later than March 13 , 1993, by filing a written appeal citing the reasons. You should be prepared to make specific factual objections. Contact Jeffrey S. Wilson to read or ask about the procedures for SEPA appeals. XX Posted on March 2, 1993 at the Edmonds Public Library, Edmonds Community Services Building, and the Edmonds Post Office. XX Distribute to "Checked" Agencies, along with a copy of the Checklist. l i n97a.DW Pagel of 3 MEMORANDUM CITY OF EDMONDS PLANNING DIVISION 250 5TH AVENUE NORTH, EDMONDS, WASHINGTON 98020 TO: BUILDING PERMIT PLAN CHECK # 974 FROM: John Bissell Code Enforcement Tech. Jeffrey S. Wilson, AICP Responsible Official DATE: March 1, 1993 SUBJECT: ENVIRONMENTAL DETERMINATION FOR NEW SINGLE FAMILY . RESIDENCE BUILDING PERMIT, FILE NO. 974 I have had the opportunity to visit the site, review the environmental checklist, and clearing plan A copy of which are filed in the official file for this permit. Based on my review of all available information and adopted policies of the City, I recommend that a determination of nonshmificance, be issued. The only environmental concerns addressed by the SEPA map and by the Environmentla impact,. and , the only concern redily visible from the subjet sit is slope stablity and errosion potential. The subject site slopes steeply down to the west at an average grae of 19.5 %. The stepp slope issues are mitigated through adopted City Ordinance found In § 19.05 of the Edmonds Community Development Code: Therefore no additional mitigations will be required to assure no substantial imapct to the site or the surrounding area. Review by Current Planning Supervisor: Iconcur I do not concur Comments: Jeffrey S. Wilson Attachments PC: FILE NO. Robert Chave, Planning Manager a7S Date Page 3 of 3 U974.DOC Mailed to the following S alon with the Environmental Checklist: Department of Ecology Environmental Review Section P.O. Box 47703 Olympia, WA 98504-7703 Duane Systad 9208 7th Pl. W. ` Everett, WA 98204 Karen Graff Terune Homes, Inc P.O. Pox 1267 Kent, WA 98035 1 Page 2 of 3 #974.DOC CITY OF El DMONDS ENVIRONMENTAL CHECKLIST A. BACKGROUND 1. Name of proposed project, if applicable: QLIA"E A919 IMW I :5 5MQ RM51 M"I 19(. 64a SMm • Cnrv9 In10 2. Name of applicant: 3. Address and phone number of applicant and.contact person: 1,00b 7-th tom/i ETr' { ain Flo- S 59-- 6n� 2 4. Date checklist prepared:o�- 5. Agency requesting checklist: City of Edmonds. 6. Proposed timing or schedule (including phasing, if applicable): s (STAFF COMMENTS) 7. Do you have any plans for future' additions, expansion, or further activity related to or connected with this proposal? If yes, explain. _ca- &,-r PQC-saAr- 710;;E7 (STAFF COMMENTS) r,. ., ... ...I nnnr. 1 of 96 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. 1 15 Lc!�cA,�p I a1 Ali, Aar �11 I 122AIMA4 "t„P�0'�� PI AIUS + sUl (STAFF COMMENTS) 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain.. (STAFF COMMENTS). 10. List any government approvals or permits that will be needed for your approval, if known. CAV41—I0" CIP=91011ICt ` MIT- (STAFF COMMENTS) ^ 11. Give brief, complete description of your proposal, including the proposed uses and size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You 'do not need to repeat those answers on this page. Tb gurco !4 �1tiICTL� r�l�y f2�5In 1c�, -- (STAFF COMMENTS) 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide range or boundaries of the site(s). Provide legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. 111 0: 81 5W An O '7 .5k AvE W SEE (STAFF COMMENTS) TO BE COMPLETED BY APPLICANT B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site circle ones Flat, rolling, hilly, steep slopes, mountainous, other• Vlr- cc�,�CC a� "jFCC LDtr�lLo o?l.Ir-L i5 GO - �P_b�s Aso c�vE R 1014 . (STAFF COMMENTS) b. What is the steepest slope on the site (approximate percent slope)? (STAFF COMMENTS) CHKLT/10-8-91.MAST[R Pace 3 of 26 C. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. ,6A hl D4 (STAFF COMMENTS) d. Are there surface indications or history of unstable soils in the immediate vicinity? If no, describe. Nm (STAFF COMMENTS) e. Describe the purpose, type and approximate quantities of filling or grading proposed. Indicate source of fill. any ( STAFF COMMENTS) /c�. K gC c 'n-' f f. Could erosion occur as a result of clearing, construction, or If so,; generally describe. F_=.Cj j f�1ZFlP-a') Or ' E � CM-5', j4 U Lr) use? Loc - D15i11Tp to00 Q P1 1nF= axi <,r-'C}- V = -> tZpJ11hL P(T `146 tW GC- lYl llyi✓V1�2E� T4iE i}El--�Tl'iTlr r " I' ]'SIU� or- ��sir�ictlA°s so +v�i95 j +U_ 6e-�C.-sr � OP_ P_�-Pu4n1T1=r_ (STAFF COMMENTS) +A 1_r_•q 6-V op-� JLATC 06-M kk-j. CY- ©TRH 't::::acyS% C-'O InAlTr 0 J;5E Pu4cr-a W Aa >Rs r:eM00 a or W5-reTH-r1av .0 IZEEPLkc You), R s(ur fekc s+Aexk(0 8- A(-ot 7_e_r � ro(,,'3% J-0 t,U_. 510iE5 ©t MU TD Cod 0 K) C-,t=/1 � w. .re YTS 'T.I-�WT iY11A-� %�!� 1 � 1 'l�1 G I_—h /1 ,. .. „ � •-rt 1_f— C i �n �- g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? (STAFF COMMENTS) h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: . 114 ( STAFF COMMENTS) AV S Ttv 1'-4c y G ✓ s I , �. 2. AIR a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Noun �� r�(c�yAt mil AMD eQft ?_T' 5-=T1n J EQW12M1WT- (STAFF COMMENTS) b. Are there any off -site sources of emissions or odor that may effect your proposal? If so, generally describe. �n (STAFF COMMENTS) page 5 of 26 C. Proposed measures to reduce or control emissions or other impacts to the, if any: (STAFF COMMENTS) 3. WATER a. Surface: (1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names'. If appropriate, state what stream or river it flows into. (STAFF COMMENTS) (2) Will the project require any work over., in, or adjacent to (within 200 feet) the described waters? If yes, please - describe available plans. (STAFF COMMENTS) (3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands .and indicate the area of the site that would be affected. Indicate the source of fill material. (STAFF COMMENTS) (4) Will the proposal require surface water withdrawals or diversions. Give general description, purpose, and approximate quantities if known. (STAFF COMMENTS) (5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. (STAFF COMMENTS) (6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. - }jO (STAFF COMMENTS) b. Ground: (1) Will ground water be withdrawn, or .will water.be discharged to ground water? Give general description, propose, and approximate quantities if known. ClIKLT110-8-91-MnSTER Page 7 of 26 (STAFF COMMENTS) (2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; 'industrial, containing the following chemicals...; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. (STAFF COMMENTS) C. Water Runoff (including storm water): (1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (including Y quantities, if known). Will this water flow into other waters? If so, describe. ( STAFF COMMENTS) (2) Could waste materials enter ground or surface waters? If so, generally describe. tJlo (STAFF COMMENTS) d. Propbsed measures to reduce or control surface, ground, and runoff water impacts, if any: (STAFF COMMENTS) 4. Plants a. Check or circle types of vegetation found on the site: deciduous tree:, der �, aspen, other: _ C evergreen tree: ,ir edar pine, other: _shrubs grass pasture crop or grain wet soil plants: cabbage, other:_ cattail, buttercup, bulrush, skunk water plants: water lily, eelgrass, milfoil, other: other types of vegetation:—jnbS:TALAr.�_(3a—gj=� (STAFF COMMENTS) b. What kind and amount of vegetation will be remove or altered? CHKLT/10-8-91-MAST[R Page 9 of 26 (STAFF COMMENTS) C. List threatened or endangered species known to be on or near the site. 1j Onl (' (STAFF COMMENTS) d. Proposed landscaping, use of native plants, or other materials to preserve or enhance vegetation on the site, if any: �3A5 t RL5!0 d e"'TIAI -At:! n e'CAP (STAFF COMMENTS) l �. 5. Animals a. Check or circle any birds and animals which have been observed on or near the site or are known to be on or near the.site: _birds: hawk, heron, eagle, songbirds, other: afjA-l'L mammals: deer, bear, elk, beaver, other:_rjUIRRC'1 fish: bass, salmon, trout, herring, shellfish, other: (STAFF COMMENTS) b. List any threatened or endangered species known to be on or near the site. (STAFF COMMENTS) C. Is the site part of a migration route? If so, explain. ( STAFF COMMENTS) d. Proposed measures to preserve or enhance wildlife, if anys �011� (STAFF COMMENTS) 6. Energy and Natural Resources. a. What kinds of energy (electric, natural gas, oil; wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. (STAFF COMMENTS) C1IKLT/10-8-91.MnSTER Page 11 of 26 b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. (STAFF COMMENTS) C. What kinds of energy conservation features are included in the plans of this proposal? wi (STAFF COMMENTS) 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so describe. R n A L. 9 AZA KL 04 A s C f 6TEV W f TIA QC -St D ELt aL COS - r -n to Ll - (STAFF COMMENTS) (1) Describe special -emergency services that might be required. FI RC A r l o W eQ ie-A L. (STAFF COMMENTS) a. Land and Shoreline Use a. What is the current use of the site and adjacent properties? MIC— IIACALM LCEV :M) . O14 ALI- nT}JEJ? Aa7 aLLI— PDzT � s VAAyF-� S netj OL-� -:I j4EQ AaQ 4AA ME ROLIAP .S (STAFF COMMENTS) b. Has the site been used for agriculture? If so, describe. (STAFF COMMENTS) C. Describe any structures on the site. i�C�l 1 (STAFF COMMENTS) d. Will any structures be demolished? If so, what? (STAFF COMMENTS) e. What is the current zoning classification of the site? —g-0 CHKLT/10-8-91.MASTER Page 14 of 26 (2) Proposed measures to reduce or control environmental health hazards, if any: �1 � 11�1 Ld�til7" g r- �T LVI�I�LrY1 F SIT t L_ 1415,4 L f 4 8aQ_S (STAFF COMMENTS) b. Noise (1) what types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other) ? tjc�u (STAFF COMMENTS) i (2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for. example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. (STAFF COMMENTS) (3) Proposed measures to reduce or control noise impacts, if any: (STAFF COMMENTS) (STAFF COMMENTS) f. What is the current comprehensive plan designation of the site? (STAFF COMMENTS) g. If applicable, what is the current shoreline master plan designation of the site? (STAFF COMMENTS) h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Il(O`S GlA %1 fi e-5 :r-H G APLEA 1 4 !1111" Is S � Irs 1�1-5 ��iQQ��m ,mil-�aL� w 5c�1S�fiyE �.�f�F'"�Wt��'� (STAFF COMMENTS) I. Approximately how many people would reside or work in the completed project? y n S- Cx5aLE LUMILAt (STAFF COMMENTS) _..I..I_....I— D'r, iq of ?A I <7 j. Approximately how many people would the completed project displace? u�Al r - (STAFF COMMENTS) k. J Proposed measures to avoid or reduce displacement impacts, if any: I�1 /A (STAFF COMMENTS) 1. Proposed measures to ensure 'the proposal is compatible, with existing and projected land uses and plans, if any: (STAFF COMMENTS) ` 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. l4 ►cD�-y— (STAFF COMMENTS) b. Approximately how many units, if any would be eliminated? In'diccate whether high, middle, or low-income housing. (STAFF COMMENTS) C. Proposed measures to reduce or control housing impacts, if any: high► t 1� (STAFF COMMENTS) 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principle exterior building material(s) proposed? cW Wi f2orY1 �i 4�`Yle�1T bE %D cgl� i (STAFF COMMENTS) b. what views in the immediate vicinity would be altered or obstructed? (STAFF COMMENTS) Pnni, 17 of 26 C. Proposed measures to reduce or control aesthetic impacts, if any: glni1cAp, L1mn Dmsie !,oinIzATA�3 - Wrt�q S U 2iZd U U 1 &J* 14,0 ►1 ES -1 (STAFF COMMENTS) 11. Light and Clare a. What type of light or glare will the proposal produce? What time. of day would it mainly occur? We f2]71At- D U:ZQo0»Z 1 1 *4 hJ(_-:ITT C%U�»-s . f�rr�� 1�Er�n� ►�tz►tft=t�Al� pN� .�� j�_ Lod,ns�at� U'S� CE: 5=r—E IJ--T 1' mar Pt��LCD �a.L (STAFF COMMENTS) b. Could light or glare from the finished project be a safety hazard or interfere with views? (STAFF COMMENTS) C. What existing off -site sources of light or glare may affect your proposal? (STAFF COMMENTS) d. Proposed measures to reduce or control light.and glare impacts, if any: (STAFF COMMENTS)_ 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? I�b �1C (STAFF COMMENTS) b. Would the proposed project displace any existing recreation uses? If.so, describe. kl r> (STAFF COMMENTS) c. Proposed measures to reduce or control impacts on recreation, Including recreation opportunities to be provided by the project or applicant, if any: -,� A (STAFF COMMENTS) 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state, or local preservation registers known to be on or next to the site? If so, generally describe. Un (STAFF COMMENTS) b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importanceknown to be on or next to the site. /A (STAFF COMMENTS) C. Proposed measures to reduce or control impacts, if any: (STAFF COMMENTS) 14. Transportation a. Identify public streets' and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. P TLI LDCA!rIEu OJEFE 0 F— A, 12MAVIAIIE RQA0 r=avEV, BY 17a S tA) � -T 6t lh!C-U (STAFF COMMENTS) ` b. Is site currently served by public transit? If no, what is the approximate distance to the nearest transit stop? (STAFF COMMENTS) C. How many parking spaces would the completed project have? How many would the project eliminate? eAQ- qAV-N4-F A019 1291V 0AU (STAFF COMMENTS) d. Will the proposal require any new roads or street, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). (STAFF COMMENTS) ' e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. (STAFF COMMENTS) ('I1k1?/1n fS 11 ��.`'II'I? i': ? I ')f f. How many vehicular trips per day would be generated by the ~, completed project? If known, indicate when peak volumes woulc occur. (STAFF COMMENTS) g. Proposed measures to•reduce or control transportation impacts, if any: f % (STAFF COMMENTS) I 15. Public Services a. would the.project result in an increased need for'public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. I EEV—S W a u 140 Y'6- Vz-� (STAFF COMMENTS) b. Proposed measures to reduce or control direct impacts on public services, if any: ha - (STAFF COMMENTS) 16. Utilities a. Circle utilities currently available at the site: electricity atural gas ater ea -fuse servic ele hone sanitary sewer, septic system, other: (STAFF COMMENTS) b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. ALLernaVE75 ArAil K)arx) -UAE MAME7 n fEnq 1= (STAFF COMMENTS) C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature of Proponent Date Submitted CIIKt.7/10-8-91.MAS'1"I R Piqe 23 of 26 D. SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS t (do not use this sheet for project actions) Because these questions are very general, it may be helpful to read them in conjunction with the list of the,elements of the environment. When answering these questions, be aware of the extent the proposal, or the types of activities likely to result from the proposal, would affect the item at a greater intensity or at a faster rate than if the proposal were not implemented. Respond briefly and in general terms. 1. How would the proposal be likely to increase discharge to water; emissions to air; production, storage, or release of toxic or hazardous substances; or production of noise? etc 5 Mal: 429L4? Proposal measures to avoid or reduce such increases are: A4 Z. How would the proposal be likely to affect plants, animals, fish, or marine life? Lin Proposed measures to protect or conserve plants, animals, fish, or marine life are: L//A 3. How would the proposal be likely to deplete energy or natural resources? Proposed measures to protect or conserve energy and natural resources are: 1 4. How would the proposal be likely to use or affect environmentally sensitive area designated (or eligible or under study) for governmental protection; such as parks, wilderness, wild and scenic rivers, threatened or endangered species habitat, historic or cultural sites, wetlands, floodplains, or prime farmlands? Proposed measures to protect such resources or to avoid or reduce impacts are: S. How would the proposal be likely to affect land and shoreline use, including whether it would allow or encourage land or shoreline uses incompatible with existing plans? fl DES 1`l r77_� l�i'�l� Proposed measures to avoid or reduce shoreline and land use impacts are: hi In 6. How would the proposal be likely to increase demands on transportation or public services and utilities? ` 1 17_y 10 S►T L!�-� fZC-S1 DEILf'� Proposed measures to reduce or respond to such demand(s) are: 7. Identify, if possible, whether the proposal may conflict with local, state, or federal laws or requirements for the protection of the environment. r�mo 2 i �#nln `6AQUW �fQ� 12 ELIC"i w�rl-! .�N Itil7- l 02/23/94 11:22 TERHLt-E HDMES, 1 NC. I N, U T ET PLE TF,Rfi.(T)NFjTff I ni.-)ME Terhkine Homo. Inc, P.O, Bca 1267 Kcnt, Washington 98035-1267 -Kenf: 04-8500 ';carth�- .624-3365 T&COMa: 272.-.1111 I Affi.07-77.25 FAX: 8.54-8592 RECSIVED FAX SHMET F E 8 2 3 1994 ENGINLERII�a TIME DATE - PAdES. INCLUDING COVER SHEET DELIVER TO: CONTACT PERSON: SUBJECT:__ FAX NUMBER: FROM; TFRMUNt HOMES, INC. CONTACT PERSON: FAX NUMBER;; 854-8592 1--1"(-)6 mol 4 9 °A^ A--- . hCL ----=-------�-� �, ;� „�� tl -� 0 •fit' H �k e- -----__.. 1 C' 1111 E DMIG S EXCAUMNG 212. - 1441h M. S.Vt lolfdL WA 980! 1 7431575 AS BU IL 7 F OR: Duane Sy -,-tad 17006 74th Ave. W. Edmo-)ds , WA 48021) I - City of Edmonds RIGHT-OF-WAY CONSTRUCTION �. PERMIT Permit Number: 9 0 (o 11 STREET Mr. Issue Date: 3_30 9y A. Address or Vicinity of Construction: 17006 — 74TH AVE WEST 18 B. Type of Work (be specific): GTE TO PLACE BURIED SERVICE WIRE FROM 9 19 PED # 4545 TO CUST. PLOWING 150—FT WITH 1 ROAD PUSH. SEE SKETCH. C. Contractor: GTE NORTHWEST INCORPORATED Contact: BARBARA TOLLEFSON9 PERMIT COORDINATOR Mailing Address: 22118 20TH AVE. SE SUITE 13thone: BARB 488-1642 State License #: BOTHELL , WA 98021 Liability Insurance: Bond: $ D. Building Permit # (if applicable): Side Sewer Permit # (if applicable): E. ❑ Commercial ❑ Subdivision ❑ City Project W Utility (PUD, GTE, WNG, CABLE, WATER) ❑ Multi -Family ❑ Single Family ❑ Other W.O. # 2100-9POOIDB 242310 INSPECTOR: INSPECTOR: L„ F. Pavement or Concrete Cut: ® Yes []No G. Size of Cut: 2 x 2 H. Charge $ APPLICANT TO READ AND SIGN il INDEMNITY: Applicant understands and by his signature to this application, agrees to "h,W the City of Edmonds harmless from injuries, damages, or claims of any kind or description whatsoever, foreseen or unforeseen, that may be f against the City of Edmonds; or any of its departments or employees, including or not limited to the defense of any legal proceedings including defense costs, and attorney fees by reason of granting this permit. THE CONTRACTOR IS RESPONSIBLE FOR WORKMANSHIP AND MATERIATS FOR A PERIOD OF ONF, YEAR LOWING THE FINAL INSPECTION AND ACCEPTANCE OF THE WORK. ESTIMATED RESTORATION FEES WILL BE HELD UNTIL THE FINAL STREET PATCH IS COMPLETED BY CITY FORCES, AT WHICH TIME A DEBIT OR CREDIT WILL BN,' P_h0CEJSED FOR ISSUANC . TO /rHF' APMICANT. Construction drawing of proposed work required with permit application. A 24 hour notice is required for inspection; Please call the Engineering Division, 771-0220. Work and material is to be inspected during progress and at completion. Restoration is to be in accordance with City Codes. Street shall be kept clean at all times. Traffic Control and Public Safety shall be in accordance with City regulations as required by the City Engineer. All street cut ditches shall be patched with asphalt or City approved material prior to theend of the working day; NO EXCEPTIONS. I have read the above statements and understand the permit requirements and the pink copy of the permit will be available on sit t all times for inspection purposes. Signature: Date: 3-14-94 (Contractor or Agg t) CALL DIAL -A -DIG PRIOR TO BEGINNING WORK FOR CITY USE ONLY APPROVED BY: 44 TIME AUTHORIZED: VOID AFTER �IDAYS SPECIAL CONDITIONS: na I° (L- RIGHT OF WAY DEPOSIT DISRUPTION FEE/FUND Ill: RESTORATION FEE: WkTE.rL C)rJLH - PERMIT FEE: COMMENTS: 6�20*0 TOTAL FEE: RECEIPT FEE: ts DATE: ISSUED BY: NO WORK SHALL BEGIN PRIOR TO PERMIT ISSUANCE Engrg. 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Tqff- cv �v►e k-lU - Fen-' IJ9P��1c CITY.' of EDMONDS Telephone Conversation Record Project / 2,;)V,9- -7y Ate' Time I Date 7%/ aZo Call to '' I Call Phone Na Discussion, Agreement and/or Action Project Na , O/ 797 -• .9 4F Phone Na �.��tacya ��-.� to Gc�! �u � v�.t e►.t � .3" r � � i� a«.✓ sri Gv�Co Gd AAV4• h✓ .% 404 a�G ,e�7'-� .Cr-sue• - 4Ae,� ..41�4 a CC: STREET MILE CITY' of EDMONDS Telephone Conversation Record I Project 1'7 04G' -7 *T" 4 JO I Project N. Time 1040 [Dale 23 Mk 4 � Call to TL)A-0�ej �l � � Icafrom LA&& C I��y� Ke��4�M j$j- 77/-Ozyry� S/ Phone No. Phone No. Discussion, Agreement and/or tJAW- wA"W to- e4mt i*t AMd dkxw." JfU IA456f.G phee. dtPuh AA -4&I h . br, 'Std.1 Gu. wad "1%1 014cu^Y4 44 hVA * O-Vt"Itd 101 04iMd 0-t'+ d-h d d v%o+— w-&Ggt fie, 5t4 s4m,. A&4-- wad 4 . f CC: CITY OF EDMONDS 250 - 5TH AVE. N. • EDMONDS, WA 98620 • (206) 771-0220 FAX (206) 771-0221 COMMUNITY SERVICES DEPARTMENT I p Public Works • Planning • Parks and Recreation • Engineering 8 9 0 march 30, 1993 Duane Systad 9028 7th Pl. W. Everett, WA 98204 Mr. Systad: LAURA M. HALL MAYOR STREET FILE The City of Edmonds is in receipt of your request for a waiver to Chapter 19.05 of the Edmonds Community Development Code, (ECDC) steep slope ordinance. Based on the soils report prepared by Couvrette Geotechnical Engineering, Inc., some ECDC Chapter 19.05 requirements will be waived, however the following shall be imposed: 1. The enclosed Covenant to Notify and Hold Harmless form is required. The form shall be executed by the owners, notarized and returned to the City. 2. A site restoration bond in the amount of $25,000 shall be required to ensure the protection of cut slopes during the foundation installation. The bond shall remain in force until final grading and slope vegetation is installed and approved by the City. 3. A licensed professional engineer shall be on site to monitor general excavations, subdrainage installation, make recommendations for shoring if applicable and verify grading yardage. Field reports shall be submitted to the City for review. 4. Foundation bearing footings and soil compaction shall be determined by a licensed professional engineer who has reviewed the Couvrette subsurface exploration reports and the foundation design. Field reports shall be submitted to the City for review. 5. The contractor shall post a a general contractor public liability insurance policy. The policy shall show the City as an additional named insured. 6. The plans shall be stamped by a registered architect, as required by State Law. 7. Per City ordinance, the project may not start until May 1st, unless your geotechnical engineer provides a letter which recommends an earlier start date and the City'concurs. If you have any questions please call me at 771-0220. Sincerely, eannine L. Graf, Acting Building Official JLG/cic L:\TEMP\SYSTAD.DOC • Incorporated August 11. 1890 Sister Cities International — Hekinan, Japan �� '�'� G� (� -" � �-�' ��`Q- • 1�.� So 1 is #��"' vUvxETTE ' I T Y COPY RECEI�VZ GEOTEC:INICAL ENGINEERING, INC. - ._ _ . _ IT COUNTER 17311 - 135TH AVENUE NORTHEAST, #A500 - WOODINVILLE, WASHINGTON 98072 - (206) 486-1669 Mr. Duane Systad 9028 - 7th Place West Everett, Washington 98204 Dear Mr. Systad: November 23, 1992 Letter Report Geotechnical Evaluation Proposed Single -Family Residence 17006 - 74th Avenue West Edmonds, Washington File No. 394-01 INTRODUCTION This letter report presents the findings and recommendations of our geotechnical evaluation of the site at the above address, on which you are planning a single-family residence. The purpose of this geotechnical evaluation is to present our findings to allow you to petition the City of Edmonds for waiving the requirement of Chapter 19.05 of the Edmonds Community Development Code, and to provide general recommendations for site development and foundation design for the proposed development. The site is located in Edmonds, Washington, as shown on the Vicinity Map, Figure 1. For our use in this evaluation, we were provided by Lovell-Sauerland and Associates, Inc. with an undated plot plan titled "Terhune Homes, Inc., Duane and Maudi Systad," which is presented in Figure 2. We understand the planned residence will have a basement which will be below grade on the east side and daylighted on the west side. SCOPE OF SERVICES Specifically, our scope of services includes: 1. Review the geologic and soil conditions at the site based on published geologic maps, 2. Provide general recommendations for site development and foundation design. and, 3. Prepare a written report to document our findings and recommendations. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 2 SITE CONDITIONS SURFACE CONDITIONS A geotechnical engineer from our office visited the site on November 18, 1992. The site is 7q+A approximately rectangular in shape, totalling about 0.6 acre. .It is fronted on the east by -7—th Avenue West, and bounded on the north, south and west by single-family residences. The topography in the vicinity of the site generally slopes moderately to steeply from the east to the west, with a gentle cross slope down from the north to the south. Within the lot the ground slopes from the east to the west generally in gradients of 33% or less, with local gradient slightly over 40% near the northwest corner. The total topographical relief across the lot is about 40 feet, from a high point at the northeast to a low point at the southwest corner. The lot has previously been cleared. Presently the lot is mostly covered with wild grass, with a thick growth of berry bushes along the western boundary. A depressed area in the northeast portion of the site was observed during our site visit, which may be the result of soil being removed previously from the site. Signs of slope instability, such as surface tension cracks, erosion channels, water seepage, recent soil movement, etc., were not observed at the site. GEOLOGIC AND SOIL CONDITIONS The Geologic Map of the Edmonds East and Part of the Edmonds West Quadrangles. Washington, by J. P. Minard, published by U. S. Geological Survey in 1983, was referenced for the geologic and soil conditions at the site. According to this map, the surficial soil unit covering the site and its immediate vicinity is mapped as an advance outwash deposit (Qva), as shown in Figure 3. It was deposited by meltwater flowing from the advancing front of the glacier. The advance outwash consists mostly of gray, clean, well -drained, stratified gravelly sand. The sediments typically coarsen upward. Fine-grained sand and some silt are common in the lower part of the unit and may occur sparingly in the upper part. The upper portion of the advance outwash may be stained by iron oxide precipitated from groundwater. The advance outwash in its undisturbed state is generally medium - dense to dense, and is capable of supporting light residential structures without excessive settlement. A shallow pit dug manually in the central east area of the lot encountered a tannish -brown to brown, dense, gravelly sand, overlain by about 12 inches of root mat and topsoil. In the central west area, a gray -brown, medium -dense, gravelly sand exposed on the surface was observed. COUVRETTE GEOTECHNICAL ENGINEERING, INC. I Mr. Duane Systad November 23, 1992 File No. 394-01 Page 3 GROUNDWATER CONDITIONS We were informed by Mr. Brian Mercil of Lovell-Sauerland that water seepage had been observed near the southwestern corner of the site and a French drain was installed along the western boundary to drain the water. The seepage was probably due to the groundwater perched on top of the more silty strata at depths and emerged out of the slope at the lower elevation of the site. The groundwater level at the site will fluctuate seasonally, depending on precipitation, surface runoff, ground cover, and other factors. Higher groundwater level can be expected during the wetter months of the year. CONCLUSIONS AND RECOMMENDATIONS GENERAL Based on the subsurface conditions observed at the site and the geologic and soil conditions indicated in the above geologic map, it is our opinion that the site is suitable for the planned development from the geotechnical viewpoint. A subsurface exploration of the site will not be required if the following guidelines for site development and foundation design are followed. SLOPE STABILITY The site is outside the Meadowdale slide area as shown on the Landslide -Hazard Map prepared by GeoEngineers Inc. The advance outwash at the site is generally dense and well -drained. It is our opinion that the potential for soil movement to occur at the site should be relatively low. SITE PREPARATION AND GRADING The site preparation should include clearing and grubbing within the construction limits. The surficial root mat and the topsoil within areas of the building and driveway should be stripped. After the surficial unsuitable soils have been removed and the site excavated to grades, the exposed surface should be compacted to a non -yielding condition using a self-propelled vibratory compactor. Any new fill required should be placed and compacted as outlined in the STRUCTURAL FILL section of this report. EROSION CONTROL Due to the well -draining nature of the advance outwash at the site, it is our opinion that the erosion hazard of the site should be relatively low. Disturbance to and removal of existing vegetation at the site should be minimized. The vegetation disturbed or removed outside of the construction limits should be re -seeded or re -planted as soon as practical. The new vegetation should be of species capable of adapting to the site environment and should be maintained until they are fully established. COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 4 A layer of jute netting or other erosion mat may be placed in areas removed of vegetation to reduce erosion potential and to help the new vegetation take hold. A silt fence should be erected along the downhill side of the construction to contain sediments that may be washed down the slope. EXCAVATION AND FILL SLOPES Excavation up to about 10 feet in depth may be required along the eastern face of the proposed building. Under no circumstances should temporary excavation slopes be greater than the limits specified -in local, state and national government safety regulations. The on -site sandy soils are generally cohesionless, and can cave suddenly without warning when excavated in overly steep slopes. Temporary cuts greater than four feet in height should be sloped at an inclination no steeper than 1.25H:1V. The above slope inclination is only applicable to cuts above groundwater table. The total height of excavation at the above -recommended slope should not exceed 15 feet. If groundwater is encountered during excavation, the construction work should be immediately halted, and we be informed to evaluate and revise the cut slope as necessary. Surface runoff should not be allowed to flow uncontrolled over the top of cut slopes into the excavated area. Exposed cut slopes should be covered with plastic sheets during periods of rain to minimize erosion and sloughing. If slopes of these inclinations or flatter cannot be achieved or if excavations greater than 4 feet in depth are required, temporary shoring would be required. Recommendations for shoring design are beyond the scope of this report. Permanent fill embankments constructed in accordance with the STRUCTURAL FILL section in this report should be inclined no steeper than 2.5HAV. All permanently exposed slopes should be planted with appropriate species of vegetation to reduce erosion and improve the stability of the slopes. The vegetation should be maintained until it is established. BASEMENT WALLS Basement walls should be backfilled in accordance with the recommendations provided in the STRUCTURAL FILL section of this report. Basement walls restrained horizontally on top are considered unyielding and should be designed for a lateral soil pressure under the at -rest condition. Basement walls restricted at the top from rotation and with level backfill should be designed for a lateral soil pressure of 65 pounds per cubic foot (pcf) equivalent fluid weight (EFW). We would be available to provide you with the design lateral pressure if sloping ground surface behind walls is used. Backfill material within a horizontal distance of 15 inches of the basement walls should be of a clean, free -draining, granular, structural fill, containing no more than 5% by weight of fines passing the No. 200 sieve, based on the fraction passing the No. 4 sieve. This free -draining backfill should be COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 5 compacted to the minimum dry density recommended in the STRUCTURAL FILL section of this report. The top 12 inches of backfill should consist of compacted, relatively -impermeable, on -site soils. The backfill material for the basement walls should be compacted with a hand -operated compactor. Heavy compaction equipment should not be allowed within a horizontal distance from the wall equal to the wall height. FOUNDATIONS Conventional footing foundations may be used to support the planned building. Footing foundations should be placed in the undisturbed, dense outwash deposit. Standing water should not be allowed to accumulate in footing trenches. All loose or disturbed soil should be removed from the foundation trenches or properly compacted prior to pouring concrete. Exterior footings should extend at least 18 inches below the adjacent ground surface and interior column footings 12 inches below the bottom of adjacent slab. Minimum foundation widths of 16 and 24 inches should be used for continuous and individual spread footings, respectively. For footings recommended above, an allowable soil bearing pressure of 2,500 psf (pounds per square foot) may be used for the footing design. A one-third increase in the above allowable bearing pressures may be used when considering short-term transitory wind or seismic loads. Structural loading information was not available when this report was prepared. Based on our experience of single-family residential structures supported on similar soil conditions and for the above allowable soil bearing pressure, we estimate that the maximum total post -construction settlement should be 3/4 inch or less and the differential settlement across the building width should be 1/2 inch or less. Lateral loads can be resisted by friction between the foundation and the subgrade or the passive earth pressure acting on the below -grade foundation. For the latter, the foundation must be poured "neat" against the undisturbed soil, or backfilled with a clean, free -draining, compacted structural fill. We recommend that an allowable lateral passive pressure of 250 pounds per cubic foot (pcf) equivalent fluid weight (EFW) and an allowable coefficient of friction of 0.35 between the footings and the soils be used. These values include a safety factor of 1.5. The ground behind the basement walls should be level or sloping upward for a horizontal distance at least 3 times the basement wall embedment depth, in order to fully develop the above passive pressure. STRUCTURAL FILL Structural fill is the fill material under footings, slabs -on -grade, pavements, and behind retaining walls where the underlying soils support loads. The structural fill should consist of clean soils with COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 6 particles no larger than four inches and should be free of organic and other deleterious substances. The structural fill should be placed with a moisture content near its optimum moisture content. The optimum moisture content is the water content in the soil which allows the soil to be compacted to the highest dry density for a given compaction effort. The on -site clean gravelly sand soil with little fines is suitable to be used as structural fill. The on -site soil contains excessive fines should only be used under dry weather conditions. Imported structural fill, if required, should be of clean, free -draining, granular soil containing particles no more than 5% (by weight) finer than the No. 200 sieve based on the fraction of the material passing No. 4 sieve, and should have individual particles not greater than 4 inches. Imported structural fill should be stockpiled separately from the on -site soils and covered with plastic sheets to prevent rainfall infiltration. The structural fill should be placed in lifts of no more than 10-inches in its loose state, compacted to a minimum percentage of the maximum dry density determined by ASTM D1557-78 (Modified Proctor Method) as follows: Application Under footings, slabs and walkway Roadway/driveway/parking area subgrade % of Maximum Dry Density 95 % 95% for top 12 inches and 90% below We recommend that Couvrette Geotechnical Engineering, Inc. be retained to evaluate the suitability of imported structural fill, if required, and to monitor the placement and compaction operation during construction for quality assurance of the earthwork. SLAB -ON -GRADE FLOORS Slab -on -grade floors should be placed on firm subgrade prepared as outlined in the SITE PREPARATION AND GRADING and the STRUCTURAL FILL sections of this report. Where moisture control is critical, the slab -on -grade floors should be placed on a capillary break which is in turn placed on the compacted subgrade. The capillary break should consist of a minimum four -inch - thick layer of free -draining gravel containing no more than 5% (by weight) passing the No. 4 sieve. We recommend that a vapor barrier such as a 6-mil plastic membrane be placed over the capillary COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 7 break to keep moisture from condensing on the bottom of the slabs. Two to four inches of sand may be placed over the vapor barrier to aid the curing of the concrete. SITE DRAINAGE Surface Drainage: The ground surface should be graded such that surface water is directed away from buildings. Water should not be allowed to stand in any area where footings, slabs, or pavement are to be constructed. The final ground surface should be sloped at a gradient of 3% minimum for a distance of at least ten feet away from buildings, except in the areas that are to be paved. Surface water should be collected by permanent catch basins and drain pipes and be discharged into a permanent storm sewer. Subsurface Drainage: Should groundwater seepage be encountered during construction, we recommend that the contractor slope the bottom of excavation and collect the water to ditches and small sump pits, from which the water can be pumped and discharged into a permanent storm drain. A footing subdrain system should be installed around the perimeter of the planned building. The subdrain should consist of a four -inch -minimum -diameter, perforated or slotted, rigid PVC pipe, laid a few inches below the bottom of the footings, with a gradient sufficient to generate flow by gravity. The footing subdrain should be tightlined to discharge into a permanent storm drain system. Under no circumstance should roof drains be connected to the footing drain system. The roof downspout drain system must be separately tightlined to discharge. The footing drain system should have a minimum of 12 inches of vertical fall before it is tied into the storm sewer system. We recommend that sufficient cleanouts be installed at strategic locations to allow for periodic maintenance of the footing and the downspout drain lines. USE OF REPORT This report is prepared for specific application to this project and is for the exclusive use of Mr. Duane Systad and his consultants and representatives. This report, in its entirety, should be provided to prospective contractors for their estimating and bidding purposes, but our report, conclusions and interpretations should not be construed as a warranty of the subsurface conditions. The scope of our services 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 this report for consideration in design. We have not performed any subsurface explorations at the site. Our conclusions and recommendations are based on the site surface conditions observed, geologic and soil conditions COUVRETTE GEOTECHNICAL ENGINEERING, INC. Mr. Duane Systad November 23, 1992 File No. 394-01 Page 8 indicated on the above geologic map, and our experience and engineering judgment. The conclusions and recommendations are professional opinions derived in a manner consistent with the level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. No warranty, expressed or implied, is made. The soil and groundwater conditions described in this report may vary from those actually encountered at the site during construction. The nature and extent of such variations may not become evident until construction. If variations appear then, Couvrette Geotechnical Engineering, Inc. (CGE) should be retained to re-evaluate the recommendations of this report, and to verify or modify them in writing prior to proceeding with the construction. ADDITIONAL SERVICES Detailed design plans for the proposed development were not available at the time this report was prepared. We recommend that CGE be retained to perform a general review of the final design and specifications for the proposed development to verify that the earthwork and foundation recommendations have been properly interpreted and reflected in the design and construction documents. We also recommend that CGE be retained to provide monitoring and testing services for the geotechnical portion of the construction work. This is to verify the subsurface conditions at the site and to observe compliance with the design concepts, specifications or recommendations. It will also allow for design changes in the event subsurface conditions differ from those anticipated prior to the start of construction. CLOSURE It has been a pleasure to provide service to you on this project. If you have any questions, or require further consultation, please call us. Yours very truly, COUVRETTE GEOTECHNICAL ENGINEERING, INC. ( - A :�� J. S. (Julian) Liu, Ph.D., P.E. Associate Three Copies Submitted Three Figures COUVRETTE GEOTECHNICAL ENGINEERING, INC. VICINITY MAP 1 3 MEA WWVALE 3 „. "m a „ PtAYFIELOS� MIO �; o =; 168T ° F _ PROJECT 6 ' \ raj ADOrWDNSE 169TH O0L s�' r SITE sw 17oTH 1'70TH SW 172ND ^ ` ST SW .P W ; 17 sr 715r sr C�U 113RD �MQ� 173 oST SW �F'4 �P�, �plE, 172N0 i SW CyLo PL 174TH coS.ST ^aaf1'Su' S .5b,�'> :�,' 175TH ST SW 17 1 Sr TNST 176TH. ` 0 176TH . sW-- .1761 o` N L SW `H PL SW f $ = 177TN sT sw a I : , 178TH ST SW 178TH n J W PL n n 1j9TH ST SW s PL.SW y 17aTH SNOHumrsH 178 H , PL y+� aT SW ►-�� ,.,COUNTY:.'" C g 18 TH ST u' SW CNRISTIAN lao' HS.: 18 TH:; PL sw 7 C`V� 181ST S SW 181 PL SW 1 3 > a,; 3 PL. 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FILE NO. 394-01 FIGURE 1 0 PLOT PLAN (1" = 30') r �• I L- AlJo 1� REFERENCE: UNDATED PLAN TITLED "TERHUNE HOMES, INC., DUANE AND MAUDI SYSTAD," BY LOVELL-SAUERLAND AND ASSOCIATES, INC. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 2 GEOLOGIC MAP At77 s �V it or "it a 1, I '`.... f` � �•\ ��. \�\ �•('cid: e� � f I 11 ri�•l i, �, If y3 ` if—r'� PROJECT �- - � t' SITE`'-V"J-�1 F� /y.C/ + 1 7•/L 1� ~ � 1 ',� �' �`�\ I ' � ' Il � I �i•�`:•� �..' !� -i•,� r 41 + '"� x' ^ r " � i r ] r_� S e P i ti< \` � \r i _`y+�! ,�\ 1 •/ � � ..✓� a�• ""'j�,,Let�►�a ,r 1a;r ^^�'•.i:.��Y;P'�x •� .o 'r� � � r<.� r "^11 •r.{ j \.....i �� .+' ,.. / %F % 4. ...� - ¢' •.wY!...,•�. v"'''..+ � 1.��. . � '1N•' w' �.a S x 'M � •W � �- M • � `9,' •✓^„1� � //y�11 /� .�.��` r:c v �' w.^.i"ar•{r...•c. `* �) 1 ��v ' $ ♦ - I: �.w�� H 1-! r,'J,'. f i / .y .. �, `" ::.-w:.^J•., � v 'y,!O \�\\\� , ' � - i �-�'�'" ,S. � '• /.r�'I \ ` r K �l i1, / REFERENCE: Geologic Map of the Edmonds East and Part of Edmonds West Quadrangles, Washington, by J. P. Minard, published by U. S. Geological Survey in 1983. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 3 9028 7th P1 W Everett Wa 98204 January 6, 1993 Jerry Saterlie Edmonds Building Official Community Services Department Building Section 250 - 5th Ave N Edmonds Wa 98020 Dear Mr. Saterlie: Building Permit Application #920-974 BUILDING This addendum letter Subsurface Exploration Proposed Single - Family -Residence is to.be attached to'our• letter report Geo- technical Evaluation dated November 23, 1992. Upon review of our preliminary investigations by you and your staff, we request consideration be given to waive the full scale provisions required in ECDC Chapter 19.05. If we can be of any assistance or answer any questions please don't hesitate to contact us at (206)355-5262. Sincerely, Duane V..Systad Maudi R. Systad RE CE IVE D JAN 0 8 1992 PERMIT COUNTER COUVRETTE GEOTECBINICAL ENGINEERING, INC. 17311 - 135TH AVENUE NORTHEAST, #A500 - WOODINVILLE, WASHINGTON 98072 - (206) 486-1669 - FAX (206)481-2510 Mr. Duane Systad 9028 - 7th Place West Everett, Washington 98204 Dear Mr. Systad: December 30, 1992 Subsurface Exploration Proposed Single -Family Residence 17006 - 74th Avenue West Edmonds, Washington File No. 394-01 INTRODUCTION At your request, we have completed a subsurface exploration at the site of the above proposed residence. Presented in this letter are the soil and groundwater conditions of the site encountered in this subsurface exploration. Previously we performed a geotechnical evaluation for this site based on the geological and soil information indicated on a published geologic map. The purpose of this subsurface exploration is to obtained soil and groundwater data at the site to supplement our previous geotechnical evaluation. Our conclusions and geotechnical recommendations from the previous geotechnical evaluation are documented in a letter report dated November 23, 1992. The soil and groundwater conditions at the site do support our previous conclusions and recommendations. Based on the subsurface conditions at the site, it is our conclusion that the construction of the proposed residence can be achieved by conventional construction methods. It is also our opinion that the requirement of Chapter 19.05 of the Edmonds Community Development Code may be waived as the potential of soil movement or slope instability at the site and the risk of damage to the subject site or adjacent properties due to the proposed development are minimal. SUBSURFACE CONDITIONS The subsurface conditions at the site were explored with five test pits excavated by a tire - mounted backhoe to depths from 7.5 to 9.67 feet on December 28, 1992. The approximate locations of the test pits are shown on the attached Plot Plan, Figure 1. Test Pits 1 through 4 were located around the location of the proposed residence, while Test Pit 5 was located near the southwest corner of the lot where seepage had previously been reported. A geotechnical engineer from our office was Mr. Duane Systad December 30, 1992 File No. 394-01 Page 2 present during the explorations, who examined the soils and geologic conditions encountered and maintained logs of the test pits. The soils were visually classified in general accordance with the Unified Soil Classification System, a copy of which is presented in Figure 2. The logs of the test pits are attached herewith. The site is covered with a thin layer of duff. A thin layer of pea gravel fill was encountered at the surface in Test Pit 3. About 2 to 3 feet of loose sand fill were encountered in Test Pits 4 and 5. Generally, a layer of tan to tan -gray, moist, medium dense, gravelly medium -coarse sand with some cobble was encountered to a depth of about 3 to 4 feet. Underlying the gravelly sand with cobble is a gray, slightly moist, dense, medium -coarse sand with trace gravel to the depths of the test pits. The gravelly sand with cobble and the sand with trace gravel encountered at the site are advance outwash deposit. It was deposited by meltwater flowing from the advancing front of the glacier. The advance outwash consists mostly of gray, clean, well -drained, stratified gravelly sand. The sediments typically coarsen upward. Fine-grained sand and some silt are common in the lower part of the unit. The upper portion of the advance outwash may be stained by iron oxide precipitated from groundwater. Groundwater was encountered only in Test Pit 5 at a depth of 9.5 feet. We understand that seepage had been a problem near the southwest corner of the subject lot for the adjoining property, and French drain was installed along the west property line. Seepage was not observed anywhere within the lot, including the southwest corner, during our site exploration. It is likely that the installed French drain along the west property line has been draining and lowering groundwater as evidenced by the groundwater level encountered in Test Pit 5. CONCLUSIONS The advance outwash at the site is well -drained due to its granular nature and high permeability. Therefore, the erosion hazard at the site should be low. The potential for soil movement or slope instability at the site is also very low because of the dense and well -drained nature of the advance outwash. Although groundwater level may fluctuate seasonally, due to the low groundwater level encountered only in the lowest portion of the site, it is our opinion that groundwater should have little impact to the construction of the proposed development. In light of the subsurface conditions encountered in our site explorations, it is our conclusion that our previous recommendations for site development, grading and foundation design are still valid. The advance outwash in its undisturbed, unweathered state is generally medium -dense to dense, and is Mr. Duane Systad December 30, 1992 File No. 394-01 Page 3 capable of supporting light residential structures without excessive settlement. Conventional sloped cut and backfill method can be used for the construction of the below -grade portion of the structure. Footing foundations should be placed on the undisturbed, tan gravelly sand with cobble or the gray sand with trace gravel deposit. The clean advance outwash deposit of sand and gravelly sand at the site is suitable for use as structural fill. The excavated advance outwash material to be used for structural fill should be stockpiled separately from other unsuitable on -site soils and should be covered with plastic sheets to prevent rainfall infiltration.. CLOSURE The subsurface conditions at the site were explored with five backhoe test pits. The soil and groundwater conditions described herein may vary from those actually encountered at the site during construction. The nature and extent of such variations may not become evident until construction. If variations appear then, Couvrette Geotechnical Engineering, Inc. (CGE) should be retained to re- evaluate the recommendations of this and our previous reports, and to verify or modify them in writing prior to proceeding with the construction. It has been a pleasure to provide this additional service to you on this project. If you have any questions, or require further consultation, please call us. Yours very truly, COUVRETTE GEOTECHNICAL ENGINEERING, INC. J. S. (Julian) Liu, Ph.D., P.E. Associate Three Copies Submitted Two Figures N PLOT PLAN (1" = 30') LGG�rJp -fP-3., reRox.TE5? PIT 'LOCATiOW W Ito s 1 3 7 s .7 fl uYrc.ri'r�--r' 1°s REFERENCE:' r� I UNDATED PLAN TITLED -TERHUNE HOMES, INC., DUANE AND MAUDI SYSTAD,- BY LOVELL-SAUERLAND AND ASSOCIATES, INC. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 1 SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GROUP GROUP NAME SYMBOL COARSE GRAVEL CLEAN GW WELL GRADED COARSE GRAVELAVEL, FINE TO GRAINED SOILS � MORE THAN 50% OF GRAVEL GP POORLY -GRADED GRAVEL GRAVEL WITH GM SILTY GRAVEL COARSE FRACTION RETAINED ON NO. 4 SIEVE FINES MORE THAN 50%- GC CLAYEY GRAVEL RETAINED ON THE SEIVE SW WELL -GRADED SAND, FINE TO NO. 200 SAND CLEAN SAND COARSE SAND Sp POORLY -GRADED SAND MORE THAN 50 % OF SAND WITH SM SILTY SAND COARSE FRACTION FINES PASSES NO. 4 SIEVE Sc CLAYEY SAND FINE SILT AND CLAY ML SILT GRAINED INORGANIC CL .. CLAY SOILS OL ORGANIC SILT, ORGANIC CLAY LIQUID LIMIT LESS THAN 50%ORGANIC 50% SILT OF HIGH PLASTICITY, ELASTIC MORE THAN SILT AND CLAY SILT SILT PASSES ON THE NO. 200 SEIVE INORGANIC CH CLAY OF HIGH PLASTICITY, FAT CLAY LIQUID LIMIT ORGANIC OH ORGANIC CLAY, ORGANIC SILT 50% OR MORE HIGHLY ORGANIC SOILS PT PEAT NOTES: SOIL MOISTURE MODIFIERS: 1. FIELD CLASSIFICATION IS BASED ON VISUAL EXAMINATION OF SOIL IN GENERAL ACCORDANCE DRY- ABSENCE OF MOISTURE, DUSTY, DRY WITH ASTM D2488-83. TO THE TOUCH 2. SOIL CLASSIFICATION USING LABORATORY TESTS MOIST - DAMP, BUT NO VISIBLE WATER IS BASED ON ASTM D2487-83. 3. DESCRIPTIONS OF SOIL DENSITY OR CONSISTENCY WET - VISIBLE FREE WATER OR SATURATED, ARE BASED ON INTERPRETATION OF BLOWCOUNT USUALLY SOIL IS OBTAINED FROM BELOW WATER TABLE DATA, VISUAL APPEARANCE OF SOILS, AND/OR TEST DATA. COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 FIGURE 2 LOG OF TEST PITS DEPTH UNIFIED SOIL SOIL DESCRIPTION (FEET) CLASSIFICATION TEST PIT 1 APPROXIMATE ELEVATION (FEET): 275.0± SURFACE BERRY BUSHES AND BRUSH 0.0' - 0.25' DUFF 0.25'- 1.6' SP DARK BROWN, ORGANIC, MOIST, 1.6' - 3.75' SP 3.75' - 7.18' SP LOOSE MEDIUM SAND W/ ROOTS AND TRACE GRAVEL TAN, MOIST, MEDIUM DENSE, GRAVELLY MEDIUM SAND W/ SOME COBBLE GRAY, SLIGHTLY MOIST, DENSE MEDIUM SAND WITH SOME GRAVEL (GRAVEL DECREASES WITH INCREASING DEPTH) TEST PIT COMPLETED AT 7.18 FEET ON 12/28/92 NO GROUNDWATER OBSERVED TEST PIT 2 APPROXIMATE ELEVATION (FEET): 275.0± SURFACE BERRY BUSHES, BRUSH AND WOOD DEBRIS 0.0' - 0.25' DUFF 0.25'- 3.33' SP TAN, MOIST, MEDIUM DENSE, GRAVELLY MEDIUM SAND W/ SOME COBBLE 3.33' - 9.0' SP GRAY, SLIGHTLY MOIST, DENSE MEDIUM SAND W/ TRACE GRAVEL TEST PIT COMPLETED AT 9.0 FEET ON 12/28/92 NO GROUNDWATER OBSERVED COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 LOG OF TEST PITS DEPTH UNIFIED SOIL SOIL DESCRIPTION (FEET) CLASSIFICATION TEST PIT 3 APPROXIMATE ELEVATION (FEET): 288.0± SURFACE BERRY BUSHES, BRUSH AND WOOD DEBRIS 0.0' - 0.25' GP LOOSE PEA GRAVEL (FILL) 0.25'- 1.25' SP DARK BROWN, MOIST, MEDIUM DENSE, GRAVELLY MEDIUM SAND W/ ROOTS 1.25' - 3.33' SP TAN, MOIST, DENSE, GRAVELLY MEDIUM SAND W/ SOME COBBLE 3.33' - 7.5' SP GRAY, SLIGHTLY MOIST, DENSE, GRAVELLY MEDIUM SAND (GRAVEL DECREASES WITH INCREASING DEPTH) TEST PIT COMPLETED AT 7.5 FEET ON 12/28/92 NO GROUNDWATER OBSERVED TEST PIT 4 APPROXIMATE ELEVATION (FEET): 287.0± SURFACE BERRY BUSHES, BRUSH AND DEBRIS 0.0' - 2.0' SP TAN -GRAY, MOIST, LOOSE SAND W/ TRACE GRAVEL (FILL) 2.0'- 5.67' SP TAN -GRAY, SLIGHTLY MOIST, DENSE GRAVELLY MEDIUM SAND 5.67' - 8.33' SP GRAY, SLIGHTLY MOIST, DENSE MEDIUM SAND W/ TRACE GRAVEL TEST PIT COMPLETED AT 8.33 FEET ON 12/28/92 NO GROUNDWATER OBSERVED COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 LOG OF TEST PITS DEPTH UNIFIED SOIL SOIL DESCRIPTION (FEET) CLASSIFICATION TEST PIT 5 APPROXIMATE ELEVATION (FEET): 255.0± SURFACE BERRY BUSHES, BRUSH AND DEBRIS 0.0' - 2.83' SP DARK GRAY, SLIGHTLY MOIST, LOOSE MEDIUM SAND W/ ROOTS (A 2-INCH IRON PIPE ENCOUNTERED) (FILL) 2.83'- 5.33' SP BLACK -GRAY, SLIGHTLY MOIST, MEDIUM DENSE MEDIUM SAND W/ ROOTS (OLD TOPSOIL) 5.33' - 9.67' SP GRAY, VERY MOIST, DENSE SAND W/ TRACE GRAVEL TEST PIT COMPLETED AT 9.67 FEET ON 12/28/92 GROUNDWATER OBSERVED AT 9.5 FEET. BOTTOM OF PIT SLOUGHED NEAR GROUNDWATER TABLE COUVRETTE GEOTECHNICAL ENGINEERING, INC. FILE NO. 394-01 i 02/1?/93 16:00 TE!;J-04E HOMES, INC. 002 rP ' r 02/08/83 11:23 FAT 20677 Ll'1VELL SAUERLAND � � 002 I Approximat,e].y ton cubic yardff of PYcavation are antitipat+ed with construct i nn of the proposed r -�T i dance. All wxcavetwd metterr i al will be deposited on the ex i s;tA ng lot around the proposed houser as shown on the Storm Drainaget, rFrading and TESC Plano to create useable yard areas. -714 }�Nsw� -Tc:) tib + 16 _w~ DRAINAGE CALCULATIONS 03-Dec-92 (Snohomish County equations) CITY OF EDMONDS SYSTAD PROPERTY, LSA FILE NO. 1674.01 * 04:13 PM ==================================================================== Total Lot Area = 0.602 Acres Total Retained Area = 0.546 Acres Portion of Lot Area to Remain Undisturbed = 0.056 Acres' Total Bypass Area = Acres Offsite Area Tributary to Detention System = Acres Time of Concentration: Cummul. Flow Length Vertical Ground Type Runoff Time of Tray. Time Feet Drop ==================================================================== Slope Cover Velocity Travel 10.000 60 3.10 5.17% fallow 1.06 0.049 10.049 140 35.20 ' 25.14% fallow 2.37 0.247 10.296 Time of Concentration, T(c) minutes = 10.296 Design storm, 10 year, Itc in/hr = 1.842 ____________________________________________________________________ RETAINED: ` Area of retained flow, Ar square feet = 23779 Sq. Feet Exist runoff coeff, by proportional areas: C paved areas, roof, sf 0.90 x Trees and brush, sf 0.15 x grass, pasture, sf 0.20 x 23779 gravel area, sf 0.75 x Total Area, sf = 23779 Cer = 0. 200 � xV Ex. flow off ret. area, Cer cfs= <Itc x Ar x Cer) = 0.201ar » ~- .44 Future runoff coeff: paved areas, roof, sf 0.90 x 6400 Landscaped yard area, sf 0.20 x 17379 Total Area, sf = ---------- 23779 � " Cfr = 0.388 STREET Q �~ m~� N FILE ,.So 0 v�w� .Q � � �� PERMIT COUNTER DRAINAGE CALCULATIONS 03-Dec-92 (Snohomish County equations) CITY OF EDMONDS SYSTAD PROPERTY, LSA FILE NO. 1674.01 * 04:13 PM ==================================================================== BYPASS: Total Area of Bypass Existing Runoff Coefficient paved areas, sf 0.90 x Landscaped yard area, sf 0.20 x Total Area, sf = Cab = Ex.flow off bypass area, Qeb cfs= (Itc x Ab x Cab) Future runoff coefficient, Cfb = paved areas, sf 0.90 x Landscaped yard area, sf 0.20 Total Area, sf = Sq. Feet Sq. Feet Sq*. Feet �k Sq. Feet ",kri J �~ Cfb = Fut. flow from bypass area, Qfb = Itc x Ab x Cfb = ___________________________________________________________ Qadjusted cfs = Car + Deb - Qfb = 0.201 Do cfs = Qadjusted/(Ar x Cfr) = 0.948 w' ==================================================================== STORAGE REQUIREMENTS Snohomish County detention storage equations ==================================================================== Design detention: 25 year VSmax Stor. Qallow Qo, cfs ,mi cf /ac reqd. _____________________________________________��________ 0.20 0.95~~ 28.41 1224.82»/ 259.7 cubic feet Allowance for lost depression storage = Total volume required = 259.7 Volume provided = 262.4 ----------------------------------------------------------- T = -25 + (c1/Qo)**.5 c1= 2706 VSmax = (c2 * T) /(T + 25))-(40 * Do * T) c2= 4329 Total Storage Required = VSmax x Ar x Cfr ____________________________________________________________________ DETENTION PIPE SIZE ====================== * Assume a det. pipe 24.0 inches, diameter Cross section area = 3.14 sf, / Usable vol. of 1.0 Type I CB = 9.53 cf Usable vol. of Type II MH inch dia = cf Usable vol. of 12.0 inch pipe: 2.0 ft long = 1.6 cf Usable vol. of inch pipe: ft long = cf Required pipe volume = 248.6 cubic feet Required pipe length = 79.1 linear feet Length of pipe used = 80.0 ft. Vol. provided: 262.4 cf k� 4� ° LRAWA5E [ALSUL0101'0 CiTr uF WMONKS SYSTAD PROFEPT\, LOA FILE W. 1V4.01 * 04:1J P� Minimum q'ade elevations Top D/S detention C8 252.90 with 1.75 ft Overflow clearance Top D/S detention C8 252.75 with 2.0 it cnver Top U/S detention CB 253.15 with 2.0 it cover Min Grnd surf. elev = 251.65 (over any inlet: 0.5 ft above OF) Inv elev at U/S end = 249.15 Max water surface elev 251.15 Invert elevation = 248.75 Outfall pipe d/s inv = pipe-. : ft Outfall swale d/s inv. swale: , ft CALCULATION OF OUTLET SIZE ========================== Off site Area Tributary Lo DetWtion Facility, AD = acres Runoff Coefficient for Offsite Area, Ceo = Tote! Lot Prsa WtLirud in Dstertion Facility, Ar = 0.546 a=rys Existing Runoff Coefficient for Retainsd Arsa, Cer= 0.200 Time of Ccrcsmtration, Tc(o) minutes = 10.z0 Design s�orm, 10 year, __________________________________________________________ Itc(ol in;hr = = 1'842 ir/hr Existing Flow: Der = Ar x Cer x Itc(u) = 0.201 cfs Qeb = Ab x Cab x Itc(o) = cfs Qeo = AU x Ceo x Itc,o> = _________________ cfs Qe = Qer + Cab + Qeo = 0.201 cis ____________________________________________________________________ Future bypass flow, Ob = Ab x Cfb x Itc(o) = Allc*nbIe flMw, 2allaw = Qs - Qb = 0.201 cfs For multiple ( 1.0 > orifices, fluw / orifice = 0.201 SIZING ORIFICE FOR RESTRICTOR Orif. Elev. H, ft a, "f d,ft d,inches ---------- ______ 248.75 _______________________ 0.026 0.182 ------------------ __�______ �� ------------------- __----------------------------- area, a = Qdo / 4.62 x (2 x g x h)**.5> g = 32.2 orifice diameter, d = ( 4/pi x a)**.5 CALCULATION OF EMERGENCY OVERFLOW CAPACITY Using least --equation for orifice: Developed Discharge, 100 yr storm Q = 3.782 x (0**2 x H**(1/2) Q = C x I x A or --equation for a weir: --�---------- Q = 9.739 x D x H**`3/2) Tc(o> = 10.296 minutes -------------------------------- I = 2.800 in/hr Min Head, H = 0.500 it HO coe+f, C = 0.388 Kin. Dia., D = 0.500 ft Area, A = 0.546 acres Q max capacity 0.669 cis Cl. = 0.594 cTs i CONNECT TO EX. t I G L r �, 1\1 r> r I) TA r P- IS NLo N O 10' ^-G" HDPE @ Z-000/c MIN.' N r t \ �— EX. G"SS Ex. SAN. SEWER CLEANOUT 17'^-G" HDPE@ 2.00% 20' UTILITIES I EASEMENT (A.F NO. 8Z04120154) 12, 0. 0 1 H RE E Pr- rR C r L 'f r D J\/) J 1N D FILTER BARRIER TOP Z55.0 (F.S.) N ~ INV. 248. 41 N CONNECTION fi",,,G"H[)PE:TI(;HTLlNE TO FOOTING DRAIN 1 h e i \� \ G" SAN . SEWER BY PLUM 13ERI G" HDPE + TIGHTLINE \ I CONNECTION \ \ TO ROOF DRAIN \\ C.B. * 2 t I \\ TYPE ILW/RESTRICTOR TOP 253.0 (F. S.) O.F. \ INV. 248.75 \ I Z �\ \ . — \� �� \\ RETAINED ARE_ A = 0.546 ACRES ++ Z 0 T- :E FLOW PATH FOR TIME OF CONCEIVTRA-RON +, -- -- -- i ` - - \\ ` EX. POWER \ \ tOg�� 15"' t" R U R VAULT U 1M4NrF,Aa A-= r"A--(0) \, \+ GRASS -LINED SWALE - F PIPE EX. S570 t0v DRAN:1NJ CLEANOUT �10' STORM DRAIN EASEMENT11 (A.F. NO. 8308180146) Y.D. f* 3 TOP 253.0 (17S.) INV. 251.50 20 15 10 5 0 20 I GRAPHIC SCALE EX. EDGE y OF ASPHALT PAVE M ENT JR CIE. DJ\/)01\1D1�:) 1�:).R 1\10, :5J6-8E3 GRASS -LINED SWALE 6LD N -- N.. DRAINAGE DIVID `�� + ---� �HOED Ou5E�\ i DRIVEWAY �PED. 1 D n I WATER r 1 Z^� D� METERS 0 p r i I ` I E ACCESS/UTILITY ASEMENT (A.F. NO. 83071Z0183) + O "� -� \ �I NrA -C \ I N87'O$'27" W ,154.00' i —�_—_ ' —.-- - — -- N -i r LOT AREA TO REMAIN UNDISTURBED = 0.056 ACRES N" + r' —rn` N � DRAINAGE AREA MAP 10' ANCE5S/UTILITY EA5EMENT (APPURTENANT) i W TER ^> (A.F O.7GIIZ30233) VALVE FOR Du1 r AP �/ AS NOT SYSTAD PROPERTY I 5�rg��3 i 1 SCALE: 1 " = 20' ki STR E1 FILE \ D •Q 1 b s Z SCALE � I 1"= 60, 7 q FOR BLUEPRINT 'HOMES,INC.- IN N.W. 1/4 OF SECTION 8, T27N, R4E, W.M. EDMONDS, �G I ' WASHINGTON STOPM gQAIAI (A.F. A 00- 8308180146) T ACCESS rr 6,hL/7-y -S147 (A.F. NO. 8509/50147 1?, 001 a (NET) IV v 2 102.6,9' 5 87.0 6 "00" E 623. 55' id9.11' b 133.70' EX/ST/N 6 UT/UT/ES EASEME/VT (A.F. A0 8204/20/54) 3 \ 12,000 O h per• � � �� 2 IZ 00 00 eNET) 176.91 - /V67' 0S' 27"W STOP.!! G?.A/N EASEMiffXT (A.F. NO.83OB160146) f 17Z,vo STREET _ S.W. WEST QrR. CO!?/V Ei? or, SECT/o/V 6 CITY OF EDMONDS P. W. DEPT. ENGINEERING DAL EXAMINED&,&DATE]8Y � REMARKS r S I N1 18. 84-6 Lo 1d6.33 479.47' rn x x co l This subdivision approval is subject to the conditions found in Edmonds File nS-23-811 ACCESS f UT/L/TY EA SEMEhlT (A.F: t40. 761/230233) - r'h L Lovell-8saerlsnd & Assooistss. Ise.. i SURVEYORS • VaX P• Dn CONG LTPOM • ILW4W* a,N UOTM AVE rT. . L1EEDUOPM VA& So= • ROE MUM �! n' Iw e%sue .a ' 1_ 60• 83 • I00al NOTES 1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH CITY OF EDMONDS STANDARDS. 2. WHERE POSSIBLE, MAINTAIN NATURAL VEGETATION FOR EROSION AND SILTATION CONTROL. 3. AS CONSTRUCTION PROGRESSES AND SEASONAL CONDITIONS DICTATE MORE SILTATION CONTROL FACILITIES MAY BE REQUIRED TO ENSURE COMPLETE SILTATION CONTROL. 4. STRAW BALES STAKED IN PLACE AS SHOWN SHALL BE USED FOR EROSION AND SILTATION CONTROL ALONG THE WEST END OF THE EXCAVATION LIMITS. 5. ROCK STABILIZED TEMPORARY ENTRANCE PAD SHALL BE CONSTRUCTED AT POINTS WHERE THE TRAFFIC WILL BE ENTERING OR LEAVING THE CONSTRUCTION SITE. 6. SLOPES OF CUT SURFACES SHALL BE NO STEEPER THAN SHOWN ON PLANS. MAXIMUM STEEPNESS SHALL BE NO MORE THAN TWO HORIZONTAL TO ONE VERTICAL. SEE GEOTECH REPORT FOR STABILIZATION OF SLOPES. 1 Fr.%Pmn --- EXISTING GRADE TEMPORARY GRADE 2•q.s EXCAVATION SLOPE,. WITH 2.9 (HORIZ): 1 (VERTICAL) SLOPE X X EROSION CONTROL (SEE NOTE 4) TOP • OF EXCAVATION Z�yl I N y .2 1 _0 iil N I � 67,1 1 t zqy t t I1 CIO . , Q Z X 1 i t O I UILL d til TIN It t , 1 BA$E OF EX AVAT/ON it t►' �' +q. ty ro ? •zit , t \ �" t • ' I t ` I I I . tOu 2 �� .•t 1A` �` X ZE I *'y TOP 4' ``\ _ _ `�� ' , t. r• t— l EXCrA _ til 3-7 43 ` .L' Oz q � N 1 -47rl 1 z 1 IP Zgl 1'----_7— _ uy4 3� t•° e `t5 it i AGGES — --tF' ° Ra I ME 1Etzs d; t' i N 0 Ob' 2 % II, 111 t..2\ s4°� 11 O I 36 A°' i I `�'�=___._. _ ._ �� A v P1A.VI►�IC� 1 '`".'...,, . 1�v6� ]� r 1 ZQ�]O o f-- d -- V a Z 1 - �UTII_ITY EASEMEN f �Ap`� F. U "t� 1 (A. No. 7Co I 10 340 3 3) pfJFZTEW,&,mT) 4 VALvE T =20' mvvvl P Rece1Veo MAY 14 1993 PERMIT COUNTER LU e�az� 5LI w