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BLD2008-00339
I • CERTIFICATE OF OCCUPANCY Jefferson County Department of Community Development 621 Sheridan Street Port Townsend, WA 98368 (360)379-4450 FAX (360)379-4451 (800) 831-2678 Al Scalf, Building Official PERMIT #: BLD08-00339 SITE ADDRESS: 3962 E QUILCENE RD Issue Date: 05/28/2009 QUILCENE, 98376 Final Date: 10/14/2010 APPLICANT: ALAN C HEROLD PHONE: 425-356-3076 26020 SE 154TH ST ISSAQUAH WA 98027-8278 SUBDIVISION: GLENVIEW SHORT PLAT Block: Lot: PARCEL NUMBER: 701311021 Section: 31 Township: 27 N Range: 01 W PROJECT DESCRIPTION: NSFR W/ 100 GAL A/G PROP TANK & HEATED BASEMENT THE PROJECT LISTED ABOVE COMPLIES WITH THE REQUIREMENT OF THE BUILDING CODE 2006 EDITION. OCCUPANCY GROUP: R-3 TYPE OF CONSTRUCTION: 5N SPRINKLER SYSTEM yes o THE PROJECT PASSED ITS FINAL INSPECTION AND RECEIVED FINAL SIGN OFF ON 10/14/2010 I:\F_BLD_Occupancy.rpt 10/29/19 BUILDING PERMIT APPLICATTN MLA08-00363 Review Type: I Jefferson County Department of Community Development 621 Sheridan Street Port Townsend, WA 98368 PERMIT #: BLD08-00339 Received Date: 7/30/2008 SITE ADDRESS: 3962 E QUILCENE RD QUILCENE, 98376 OWNER: ALAN C HEROLD PHONE: 425-356-3076 26020 SE 154TH ST ISSAQUAH WA 980278278 GLENVIEW SHORT PLAT SUBDIVISION: Block: Lot: PARCEL NUMBER: 701311021 Section: 31 Township: 27 N Range: 01 W CONTRACTOR: 15itPHONE: ZDESBM044. t .i V\Cio 1 C-OYN - rUC-t)a> CO C i(e.D 1G5-(-173 7 PO 3 Dx 15y 6 (Ov)I c-c >�., , l.i '37G_, crc«-NiEMabcol1MZ REPRESENTATIVE: PHONE: PROJECT DESCRIPTION NSFR W/ 100 GAL A/G PROP TANK hewed.. briery- QYl--ts- TYPE OF WORK RES SQUARE FOOTAGE: TYPE OF IMP NEW MAIN: 1,544 VALUATION 350,000.00 ADD'L: 645 HEAT TYPE: EEE CODE EDITION: 2006 HEAT BASE: 158 7 c HEAT TYPE: HTP OCCUPANCY: R-3 UNHEATED: 't 2. #OF STORIES: OCCUPANCY: OTHER: CONST TYPE: 5N GARAGE: SHORELINE: CONST TYPE: DECK: SETBACK: BANK HEIGHT: SEWAGE DISPOSAL: CON WATER SYSTEM: 2WELL BEDROOMS: BATHROOMS: Exist: 0 Exist: 0 Prop: 2 Prop: 3 Total: 2 Total: 3 r Routing Date: .._ J36t6�S Type Amount Paid Bv: Date: Receipt: Approved/Date Permit $2,673.75 AMS 07/29/08 100756 Plan Check $1,737.94 AMS 07/29/08 100756 APPROVE[ State Building Code $4.50 AMS 07/29/08 100756 Potable Water Application $59.00 AMS 07/29/08 100756 MAY 2 Total: $4,475.19 Jefferson County Planning &Building Department Jefferson County Building D•sion Permit Nur>, BLD08-00339 Applicant: HEROLD BUILDING PERMIT INSPECTION APPROVALS applicable Code: 2006 International Building Codes To schedule inspections, call (360)379-4455 no later than 7:00 AM the day of the inspection. Requests received after 7:00 AM will not be scheduled for that day's inspections. ELECTRICAL PERMITS are issued by the Washington State Department of Labor& Industries. The electrical permit must be signed off by the State Inspector prior to the County's Framing Inspection Inspection Item Date Approval Signature Notes Setbacks Zkr � _ Setback from East Quilcene Rd right-of-way shall be no less than 20 ft. �j 1 si4e ae4iear setl�,acks shall be-He less than 5 ft. from parcel boundaries. Setback from the top of the shoreline bluff shall be 50 feet for building structures(deck may be located 44 feet from top of bluff if breakaway per the Geotechnical Report prepared by Stratum Group dated February 26,2009). A marine bluff buffer of 10 feet from the top of the bluff shall be maintained in a naturally vegetated state as per the face of the Glenview Short Plat and Notice to Title recorded under AFN 387329. Erosion Control See approved engineer approved stormwater plan for erosion control- - I silt fence,construction entrance,etc. Foundation Footing 8 /6109 Footing Drains to-b-D Foundation Stem Wall (t-et,icft Underground Plumbing Under Floor Framing Straps(hold downs) Ext.Shear Wall Nailing -1ekr' Rough-in Plumbing N 10 4.4(.(C . )9(31 0 D Framing ljk 1:2 �, Blocking • �j{ " " Airseal 146-10 J Insulation:Walls 4-1 b-1-) Insulation: Floors 4)-/ ;:77 Insulation: Ceiling ct-W c 0 Int.Shear Wall Nailing Wallboard Nailing 514 Gas Line: Interior Gas Line: Exterior S 13 I 0 Propane Tank Heat/Chimney Clearance Drywell/Alt Drainage / '/) Infiltration trench as located and designed in approved engineer appFe.ed sleFrnwater plan. Address Posted St t Kuz_4r) -LI ALI___O FINAL INSPECTION 10-11-10 9r--- FINAL INSPECTION MUST BE APPROVED PRIOR TO BUILDING BEING OCCUPIED THIS PERMIT IS VALID FOR ONE YEAR • • CONDITIONS for Building Permit# :BLD08-00339 1.) PRIOR TO FINAL BUILDING OCCUPANCY, PROPONENT SHALL SUBMIT A WRITTEN LETTER FROM THE GEOLOGIST WHO PREPARED THE GEOTECHNICAL REPORT DATED FEBRUARY 26, 2009 STATING THAT THE STRUCTURE AND/OR FACILITIES HAVE BEEN CONSTRUCTED IN CONFORMANCE WITH THE REQUIREMENTS OF THE "GEOTECHNICAL REPORT." THE LETTER SHALL BE STAMPED BY THE LICENSED GEOLOGIST/ENGINEER. 2.) EXCAVATION, GRADING AND EARTHWORK CONSTRUCTION SHALL ONLY BE ALLOWED FROM APRIL 1ST TO NOVEMBER 1ST, UNLESS THE APPLICANT DEMONSTRATES THAT SUCH ACTIVITIES WOULD NOT RESULT IN IMPACTS OT THE STEEP SLOPE. 3.) Alan Harold (owner) to provide building plan details for the required break-away deck as required by Stratum Group Geotechnical review dated 2-26-09. 4.) AN ENGINEERED STORMWATER MANAGEMENT PLAN PREPARED BY STRATUM GROUP, DATED FEBRUARY 26, 2009 AND AMENDED MAY 13, 2009, HAS BEEN SUBMITTED AND APPROVED BY THE DEPARTMENT OF COMMUNITY DEVELOPMENT. ONCE THE SUBJECT PERMIT HAS BEEN ISSUED THE APPLICANT SHALL FULLY IMPLEMENT THE PROVISIONS OF THE SUBMITTED PLAN AND CONTACT THE PROJECT ENGINEER TO ARRANGE A SCHEDULE TO INSPECT THE PROPERTY FOR PLAN COMPLIANCE. A CERTIFICATE OF OCCUPANCY WILL NOT BE ISSUED UNTIL THE DEPARTMENT RECEIVES A LETTER VERIFYING PLAN COMPLIANCE. NO CLEARING FOR ROADWAYS OR UTILITIES SHALL OCCUR ON THE PROJECT SITE UNTIL CLEARING NECESSARY FOR THE INSTALLATION OF TEMPORARY SEDIMENTATION AND EROSION CONTROL MEASURES HAVE BEEN COMPLETED. 5.) PRIOR TO OCCUPANCY & BUILDING FINAL - FINAL APPROVAL OF SEPTIC SEP06-237 & SEP94-475 IS REQUIRED. MUST MEET ALL. CONDITIONS OF SEPTIC PERMIT. 6.) ANY PORTION OF TRANSPORT LINE UNDER A DRIVEN WAY IS TO BE SLEEVED/CASED OR EQUIVALENT. VERIFICATION ON RECORD DRAWING REQUIRED. 7.) 10' SEPARATION REQUIRED BETWEEN A WATER LINE AND ALL PORTIONS OF THE ONSITE SEWAGE SYSTEM; EFFLUENT TRANSPORT LINE, TANKS, TREATMENT AND DISPOSAL COMPONENTS. 8.) ALL COMPONENTS OF THE SEPTIC SYSTEM (INCLUDING SEPTIC TANK AND PUMP CHAMBER) ARE TO BE COMPLETELY PROTECTED FROM VEHICULAR TRAFFIC OR MECHANICAL DISTURBANCE. 9.) A minimum of two (2) on-site parking spaces is required for the single-family residence. 10.) Setback from East Quilcene Rd right-of-way shall be no less than 20 ft. side and rear setbacks shall be no less than 5 ft. from parcel boundaries. Setback from the top of the shoreline bluff shall be 50 feet for building structures (deck may be located 44 feet from top of bluff if breakaway per the Geotechnical Report prepared by Stratum Group dated February 26, 2009). A marine bluff buffer of 10 feet from the top of the bluff shall be maintained in a naturally vegetated state as per the face of the Glenview Short Plat and Notice to Title recorded under AFN 387329. 11.) Stormwater shall be retained and infiltrated on site. The owner shall control all sedimentation and erosion on the property. 12.) Prior to commencing developm tivity, the proponent is responsible for in ing the Washington State Department of cology, Stormwater, in order for WSDOE totermine whether a Construction Stormwater permit or review is required. Generally, review is required for projects that disturb 1 or more acres of land through clearing, grading, excavating, or stockpiling of fill material, or when there is any possibility that stormwater could run off site during construction and into surface waters or conveyance systems leading to surface waters of the state. Contact the Joyce Smith, Washington State Department of Ecology at 360-407-6858,josm461 @ecy.wa.gov, for more information. 13.) Maximum impervious surface coverage is 25% of the parcel. Impervious surface is defined as a surface area that creates a barrier to the entry of water into the soil in comparison with natural conditions prior to development, or that causes water to run off the surface in greater quantities or at an increased rate of flow in comparison with the flow prior to development. Common impervious surfaces may include roofs, driveways, patios, packed earth, and oiled surfaces. 14.) To help prevent seawater from intruding landward into underground aquifers, all new development activity on Marrowstone Island, Indian Island and within 1/4 mile of any marine shoreline shall be required to infiltrate all stormwater runoff onsite. 15.) VOLUNTARY MEASURES OF COASTAL &AT RISK SIPZ: Water conservation measures: 1. Roof and other intercepted precipitation shall be routed to on-site detention ponds and/or other approved means and allowed to be released to the soil slowly. 2. Water collected from Storm water and roof catchments may be used for watering lawns and gardens. Unless catchment water has been treated to meet drinking water standards, there shall be no cross connections allowed between the potable supply and impounded water. 3. Water withdrawn from wells on each property shall not be used for watering of lawns and/or gardens. 4. Ground water withdrawn from each property shall be restricted to a rate of three (3) gallons per minute. 5. Installation of water conserving fixtures such as low flow toilets, faucets and shower restrictors and other water saving plumbing fixtures. 6. Landscaping plan (xeriscaping, native vegetation with minimal amounts of irrigation). Please NOTE that the above listed measures are not intended to be exhaustive, but rather is intended to be illustrative of the types of water conservation measures. 16.) MANDATORY MEASURES FOR COASTAL SIPZ: 1. For proof of potable water on a building permit application, applicant must utilize DOH-approved public water system if available. 2. If public water is unavailable, a qualifying alternative system may be used as proof of potable water or an individual well may be used as proof of potable water subject to the following requirement: a. Chloride concentration of a laboratory-certified well water sample submitted with building permit application. 3. If public water is unavailable, a qualifying alternative system may be used as proof of potable water. 17.) Consistent with the Glenview Short Plat and Notice to Title recorded under AFN 387329 a vegetative buffer of 10-feet shall be permanently maintained from the top or edge of the Landslide Hazard Area. All buffers shall be measured perpendicularly from the top of the Landslide Hazard Area. 18.) A Geotechnical Report prepared by Stratum Group, dated February 26, 2009, was submitted in conjunction with this application. The report addressed the stability of the geologicly hazard area. A setback of 50-feet shall be measured perpendicularly from the top or toe of the geologic hazard to the proposed building structure. Deck may intrude on setback to 44 feet if designed to break away, consistent with the geotechnical recommendations. 19.) Landslide Hazard Areas and theesociated buffers shall remain naturally vetted. Should buffer disturbance occur during construction, the Unified Development de (UDC) Administrator shall require replanting with native vegetation. No alterations shall be made to the Landslide Hazard Area or its associated buffer without prior authorization by the UDC Administrator. 20.) Prior to and during approved construction activities, the perimeter of the landslide hazard area buffer shall be marked with a temporary sign. The sign shall be placed in such a manner that it can be directly observed from the construction area. The sign shall contain the following statement: "Landslide Hazard Area and Buffer- Do not Remove or Alter Existing Vegetation." 21.) All construction activities shall not encroach upon the stream or geologically hazardous area buffer. This includes the storage or preparation of materials. 22.) The applicant shall permanently separate the boundary of the Landslide Hazard Area Buffer from the remainder of the subject property through installing logs, trees, a hedge row, or any other prominent physical marking approved by the UDC Administrator. 23.) Critical Aquifer Recharge Areas may require special protection measures to mitigate water quality degradation. The submitted proposal does not require additional aquifer protection measures. However, during construction the project shall follow the Best Management Practices (BMPs) and facility design standards as identified and defined in the Stormwater Management Manual for the Puget Sound Basin. 24.) The identified Fish and Wildlife Habitat Area (Type N Stream), shall maintain a vegetative buffer setback of 25 feet landward of the top of the bank associated with the stream as depicted on the face of the Glenview Short Plat. 25.) An additional setback of five (5) feet is required from the edge of the buffer area to the proposed single family residence. 26.) A permanent physical separation along the boundary of the buffer area shall be installed and permanently maintained. Such separation can include installing logs, trees, a hedgerow, or any other prominent physical marking approved by the UDC Administrator. 27.) Buffer perimeters shall be marked with temporary signs at an interval of one per parcel or every one hundred (100) feet, whichever is less. Signs shall be in place prior to and during construction activities. The signs shall contain the following statement: "Buffer- Do Not Remove or Alter Existing Vegetation." 28.) The project shall adhere to the Best Management Practices (BMPs) to control stormwater, erosion and sediment during construction. BMPs shall address permanent measures to stabilize soil exposed during construction, and in the design and operation of stormwater and drainage control systems. 29.) Outdoor residential storage shall be maintained in an orderly manner and shall create no fire, safety, health or sanitary hazard. 30.) Not more than 2 unlicensed vehicles shall be stored on any lot unless totally screened from view of neighboring dwellings and rights-of-way. Such screening shall meet all applicable performance and development standards specific to the district in which the storage is kept, and shall be in keeping with the character of the area. Screening shall meet the requirements of Chapter 18.30 JCC. Outdoor storage of 3 or more junk motor vehicles is prohibited except in those districts where specified as an automobile wrecking yard or junk (or salvage) yard and allowed as a permitted use in Table 3-1 or Chapter 18.18 JCC, and such storage shall meet the requirements of JCC 18.20.100, Automobile wrecking yards and junk (or salvage) yards. In no case, shall any such junk motor vehicles be stored in a critical area. 31.) The building height is not to exceed 35 feet. 32.) Exterior lighting for residential uhall not exceed twenty feet(20') in height the finished grade, excepting when such lighting is an integral part of a building or ructure. Ground level lighting is encouraged. 33.) Lighting fixtures shall be designed and hooded to prevent the light source from being directly visible from outside the boundaries of the property. The intensity or brightness of all lighting, during construction and after project completion shall not adversely affect the use of surrounding properties or adjoining rights-of-way. r 410 030 Aitifi01 N SUJ B}f 4 cod JEFFERSOCOUNTY •`,A ' 1 DEPARTMENT OF COMMUNITY DEVELOPMENT '' ..0 621 Sheridan Street • Port Townsend •Washington 98368 ��� 6 inr 360/379-4450 • 360/379-4451 Fax ��� p7 www.co.jefferson.wa.us/commdevelopment 'A_ ; �.�IN H i r Master Permit Application MLA: C —3� Proje t De ri tion(inct a crate sh is as gecessary): Qre(4 5►►�Q_ ithwi( eK� 0- 3162 'e Alt C044 IU, G1udcan,o Tax Parcel Property Number: '��3 I/O 10 2l Size: 1. 13 am's (acres/square feet) Site Address and/or Directions to Property: 3f62fa�-t-Mut(r' lid 1((Q 1 gilif Y8 6 Property ner( )of Record: ci e d Telephon • 30 .6 Fax: email: era • Q SQJc_.La411i Mailing Address: 020 5f, ! �!`3.5 d f q'�QLq Applicant/Agent(if different from owner): ((1 Telephone: Fax: email: Mailing Address: Whit kind of Permit?(Check each box that applies J uilding 0 Variance(Minor, Major or Reasonable Economic Use) O emolition Permit ❑Conditional Use[C(a), C(d),or C)*" Single Family ❑Garage Attached/Detached 0 Discretionary"D"or Unnamed Use Classification O Manufactured Home ❑ Modular 0 Special Use(Essential Public Facilities)** O Commercial* ❑ Boundary Line Adjustment O Change of Use ❑Short Plat** O Address 0 Road Approach 0 Binding Site Plan** ❑ Home Business ❑Cottagelndustry 0 Long Plat** ,0 Propane 0 Planned Rural Residential Development(PRRD)/Amendments""' 0 Sign 0 Plat Vacation/Alteration** ❑Allowed"Yes"Use Consistency Analysis 0 Shoreline Master Program Exemption/Permit Revisions** 0 Stormwater Management 0 Shoreline Management Substantial Development'" ❑Site Plan Approval Advance Determination(SPAAD)* ❑Shoreline Management Variance ❑Temporary Use 0 Comprehensive Plan/UDC/Land Use District Map Amendment ❑Wireless Telecommunication* 0 Jefferson County Shoreline Master Program Amendment ❑ Forest Practices Act/Release of Six-Year Moratorium ❑Tree Vegetaion Request *May require a Pre—Application Conference **Requires a Pre-Application Conference Please identify any other local,state or federal permits required for this proposal, if known: DESIGNATION OF AGENT I hereby designate to act as my agent in matters relating to this application for permit(s). OWNER SIGNATURE Date: By signing this application form,the owner/agent attests that the information provided herein,and in any attachments,is true and correct to the best of his,her or it's knowledge. Any material falsehood or any omission of a material fact made by the owner/agent with respect to this application packet may result in this permit being null and void. I further agree to save,indemnify and hold harmless Jefferson County against all liabilities,judgments,court costs,reasonable attorney's fees and expenses which may in any way accrue against Jefferson County as a result of or in consequence of the granting of this permit. I further agree to provide access and right of entry to Jefferson County and its employees,representatives or agents for the sole purpose of application review and any required later inspections. Staffs access and right of entry will be assumed unless the applicant informs the County in writing at the time of the applicatio at hepr e a s prior notice. �/2���� Signature: G Date: • The action or actions Applicant will undertake as a result of the issuance of this permit may negatively impact upon one or more threatened or endangered species and could lead to a potential"take"of an endangered species as those terms are defined in the federal law known as the "Endangered Species Act"or"ESA."Jefferson County makes no assurances to the applicant that the actions that will be undertaken because this permit has been issued will not violate the ESA. Any individual,group or agency can file a lawsuit on behalf of an endangered species regarding your action(s)even if you are in compliance with the Jefferson County development code.The Applicant acknowledges that he,she or it holds individual and non-transfera respra ili r adhering to and complying with the ESA. The Applicant has read this dis I 'mer d signs and dates it below. Signature: Date: 24 0.9 C:\Documents and Settings\caral\Local Settings\Temporary Internet Files\OLK86\Master Permit Application 12-19-2006.doc 4. ED IP BUILDER STATEMENT The signer of this statement does hereby certify that they are the Owners of the parcel referenced herein,that they are not licensed contractors and that they will be assuming the responsibility of the General Contractor for the proposed project. Signature: Date: GENERAL CONTRACTOR OR MANUFACTURED HOME INSTALLER: PHONE: FAX: 175D ( ) ( ) MAILING ADDRESS: EMAIL: CONTRACTOR'S LICENSE WAINS NUMBER: NUMBER ARCHITECT/ENGINEER: PHONE ( ) FAX:( ) MAILING ADDRESS: EMAIL .Pr ject Type: Frame Type: Bathrooms: Shoreline: Type of Sewage Disposal: New i"Wood Existing: II Sewer ❑ Addition ❑ Steel Proposed: 3 Bank ❑ Community System ❑ ,Alteration/Remodel ❑ Concrete Total: ___ _ H@ig_ht:: VIndividual Syytgm � ❑ Repair [0 Masonry rr�� SEP Permit# i•" ❑ Demolition L Other: Bedrooms: Water Supply: Existing: Setback: ❑ Private well erTwo Party Proposed: 2- 2�/poat Li Public Total: 2 t Qof r S ySxe n m' kt—�J If this is a Commercial Project you must answer the following: Number of Parking Spaces: Current: Proposed: Number of ADA Parking Spaces: Number of occupants(includes owners,tenants,employees, etc) Current Proposed IBC Occupancy: IBC Type of construction: Will you have Food Service? Yes / No If this is a Propane Tank and/or Appliance Installation permit,mark all items below that apply: B1filderground Tank CI Above ground Tank Size of Propane Tank: ( ( OO CX l ❑Heat Stove Cook Stove 0 Woodstove 0 Fireplace Insert 0 Hot Water Tank 0 Pellet tove IffOther od.$ 4// f c ' Is this appliance being installed in a Manufactured/Mobile Home? Yes / No When applying for a permit to install a propane tank you must also submit a site plan showing all of the buildings,all property lines,tank location and size, distances from the propane tank to all property lines,buildings and septic system components, including the reserve area. Square Footage Current Proposed For Office Use Only Amournt Revision TRe Main Floor Heated EH Bld App Review: 2 °Floor Heated 64r. <o,,poi ct5 Consistency Review: I ( ,tr, Other Heated Axise fee:should 6e s �.�c�-�3. 5 4- a313.-1 at-n "oZ • 15 zm ccc Mezzanine o f) e-1(ne (-YJn . 3CO-1 r3 Heated Basement 60 51")Sy �(� P ck feg q 3—) , '1 y_ I O 1 heated Basement >t 147,651.11 State Surchargell fee: 13 �� c ng�+n htd r ! 9- . S 0 Other Unheated Pot Water Review fee: J 00 Garage/Cargo r T.7 T T J SUBTOTAL 5 Decks 911/Rd Approach fee: r _ 2.x ►S-6rZ9 Other JUL 2 9 2A8 `'� TOTAL: $5 10J ,i n 332. ,►� �l�' ,Qeceipt Number: •( ©O�� ICU MUM 0 ash/Check Number: ' 3� Gam( r , ESTIMATED COST(REQUIRED) Date: ,---1 / Ci I:36 Fair et value of a and materials foundation to finish 60d Initials: ,IL/� C:\Documents and Settings\caral\Local Settings\Temporary Internet Files\OLK86\Master Permit Application 12-19-2006.doc • • APPROVED STORMWATER PLAN STRATUM GROUP MAY 2 8 2009 P.O.Box 2546,Bellingham,WA 98227 Phone(360)714-9409 JEFFERSON CO February 26, 2009 E' �• el �, i�i,//j-� Allan Herold 26020 SE 154th Street MAR 2Q^ Issaquah, WA 98027 JEFFEUrn EGiJNI TED Re: Stormwater Plan and Geotechnical Review Parcel 701311021, East Quilcene Road Jefferson County, WA Dear Mr. Herold: I have reviewed the proposed development plans for your property, reviewed the geotcechnical reports for the site and reviewed and added information for the stormwater submittal to Jefferson County. The proposed development can fully disperse stormwater consistent with the Ecology (2005)BMP T5.30 with sheet flow dispersion from the driveway area consistent with Ecology (2005) BMP T5.12 and infiltration trenches for roof run off consistent with Ecology (2005) BMP T5.10. Stormwater management in this manner is consistent with the Ecology (2005) stormwater manual for Western Washington and is consistent with the geotechnical reports previously prepared for the site and is consistent with my own assessment of geologic conditions at the site. Setbacks and Slope Stability I reviewed the NTI (1993) and NTI (2002)reports regarding geology conditions at the site and I visited the site and inspected the geology conditions at the site. Conditions I observed at the site are generally consistent with the observations by NTI and I concur with the recommendations made by NTI. The initial geotechnical report NTI (1993) for the site recommended permanent structures should be located a minimum of 50 feet back from the top of the steep shoreline bluff slope. The proposed home will be located 3U feet back from the top of the steep shoreline slope. Based on my inspection of the site, it is my opinion that this distance will be protective of the home for the expected life of the home (at least 100 years). It is acceptable to have a deck within the 50-foot setback area as long as the deck is not structurally connected to the home. The proposed deck will be located no closer than 44 feet to the top of the bluff slope. The location of the deck 44 feet from the top of the bluff slope will not increase the risk to the proposed home nor will it increase the risk of slope failures on the steep shoreline bluff slope. NTI (1993) described a shallow bowl-shaped depression along the south side of the slope down towards the intermittent stream. NTI indicated that the area may represent past shallow slumping of soils, but noted that the potential slump area was not active. Past grading has taken place at this location such that soil was removed from the upper part of the bowl like area and a rockery • I February 26,2009 Parcel 701311021,Jefferson County,WA Stormwater Plan wall was constructed between the bowl area and the proposed building area. No recent movement was evident. Prior to the NTI site visit, the level area had already been graded and it is possible that past grading had placed organic rich soils with no compaction on the slope and some settlement had taken place. I also observed what may be a very old skid road across the intermittent stream valley. NTI recommended a setback from this bowl shaped area of 25 feet. The proposed home site will be located greater than 25 feet from the bowl area. The proposed building area above this are is underlain by weathered bedrock soil. Based on my observations placement of the house on the level building area as proposed will be appropriate and the home will not be subject to settlement from soils on the slope. Stormwater Management The proposed stormwater plan meets the recommendations of NTI, and is consistent with the Ecology(2005) stormwater manual adopted by Jefferson County. The proposed stormwater management for the site is for full dispersion consistent with Ecology (2005) BMPT5.30. The site will be left in greater than 65% tree and native vegetation and the amount of impervious surfaces is less than 10% of the site. The stormwater generated by the driveway area is less than the threshold requiring pretreatment and will be managed by BMP T5.12 (sheet flow). Stormwater from the roof area will be managed by BMP T5.10 (infiltration). The proposed stormwater management from the driveway area will be to allow sheet flow off of the driveway surface towards the north consistent with Ecology (2005) BMP T5.12. The following figure indicates where sheet flow dispersal should take place. Soils to the north of the driveway area consist of well drained soils with topsoil and native vegetation. The soils are Alderwood gravelly sandy loam. These soils are well drained and test pit observations on the gentle slope below the driveway to the north are consistent with these soils being well drained. Sheet flow off of the driveway to the areas indicted will not lead to any surface water flow across the site and the soils will infiltrate all runoff before any water reaches the intermittent stream located approximately 75 feet to the northeast. RECEIVED_ ORMWATER PLAN JEFFERSON COUNTY DCD k,kAY .. 3 2009 JEFFERSON la TY Stratum Group DEPT.OF CO .�� ^IT )J'OP �- SIGNATURE: File: 1.10.09 Ase 2 10 ,row--4--;.,:t9 :„...",,,—_,,,,,,,,, 1141, February 26 2009 ,aA _�' ('_ Parcel 701311021,� Jefferson County,WA F `�. till, �` ` ' 2J�� Stormwater Plan OEnserales4 o JEFF f. Z C{LDC .1 •r a termittent �, 9 '0 �e_ '�`, sµi ream <+�` TOP OF SLOPE ' _ (TYP.) t r 1 Y _�__ �� it 1 M ii V. - I F NVt'-1} �1 20'BUILDING ! )Nk Infiltration 1 �� ► SETBACK LINE ^ f Trench 4,2 _0o'r, '. SLUMP EXIST STEPS y 1 �I 1 tti AREA . •oCKERY ' 1 i SE B K .). _ �-A2 WATER STUB c J _ I 56.-6 _ 1.1 ._ _ i I I ``-.t rl1 t't}; . sss Stormwater :_ 9 `-) Y ' .-DRIVE' Ail. ) . ,• f sheet flow off T r' '. _ 1.3 7 ; driveway into —I — o-0- . 1 • --F '` native soils r, ; v i and vegetation 1 1 1 i 1 2 34' i i ROE AT r Stormwater from the roof of the proposed home should be routed to a dispersion/infiltration trench located to the northeast of the home site. Stormwater from the roof should be tight lined to the infiltration trench. The soils at the infiltration trench are well drained and the site is located upslope of native vegetation with thick(2 feet)topsoil. This site is the most appropriate for infiltration on the site as soils at this location are thick and well drained and increased water at this location will not cause any slope stability issues for the shoreline bluff slope. Directing stormwater to this area is consistent with the NTI recommendations to direct stormwater away from the steep shoreline slope and is consistent with my own opinion that this location will not cause any slope stability problems on the steep shoreline bluff slope. The stormwater generating surfaces of the roof and driveway are below the threshold level of 10,000 sf and less than the 3/4 acre threshold of land has been cleared of native vegetation for development requiring flow control (see Ecology, 200 eti the A PROV D Stratum Group STORMWATER PLAN File: .I°.°9 3 MAY 2 3 2009 JEFFERSON CO DEPT.OF CO tUNITY D COO • • February 26,2009 Parcel 701311021,Jefferson County, WA Stormwater Plan infiltration trench should be at least 10 feet long for every 700 sf of roof area and should be installed such that the dispersion pipe is level. A typical design per Ecology recommendations is presented below. • Ripe O.D. t'-0 mitt i rCh end cap o r p lug 1E4.1'7°06 oiran out w e from pipe a °a 7 o 4"or6"pert rated pipe taidflat�leoel notched a ° grade board �` tia 2"..;2'notches c; F 4 type IC B wfsolid ccn,er Clcoking) 1FJ"O.G. 3 a a rd rI ""*- 3' 4 'i a pF i is yn C fbinfl�.0 Q.�tip C F$n perdes trencht 4 4 94. lila v -clean out wya from pipe 4dd PLAN RECEW ,D pipe OD. '.AR 1 (3 2 1 f gahcanized bolts % 1'-0 / 1'•Q r1 wl D�'30' �jr(r' r��' I1(�rlllIfnJ , S WIi ,,,0'3 �0 ULi rD 1.tie`ri4 ut),")� u.J fir'i:i n ei++ r;, i �qY.l a'a' O • Q_', E6 '•'.`f .'F.. .''�. Pressure `% av treated grade 'g :^ i � �..� p a % . f :• 4"or 6"perforated ', f+ boardto `' 11, op. 9 t pipe laid flak j NOTES: tY " C 4' sup Ott pera-t I r;`� a 1.Thy trenoh shall te constructzd so clean %tir s •`� b_ '" �`'`5e a�h prevent pointdisc•harge and,hr td a q r erasrn 4, 2.Trenctr_s rnanr te plated no closer filter .Gr i -' ' '''` " than 50 feet t one anott a r.(100 feet a.br,,fbwline) "15% nr �cturf•fla controt,Vater� aslih' 3.Trenchandgrate beard must be level.A Iig n to follow contours of treatrrrent in wi J a.rvm, SECTION x x 4.Support post spacing as nag uired by J'1'!A boar) A F nV 'D STORMWATER PLAN Stratum Group File: 1.10.09 4 v1AY 2 2009 JEFFERSON CO Y DEPT.OF COMM NITY D' EL SIGNATURE: i , S February 26,2009 Parcel 701311021,Jefferson County,WA Stormwater Plan Conclusion Based on my site assessment and the investigation by NTI, it is my opinion that development of the site and the following of the stormwater plan will not cause any adverse impacts to the stability of the site or adjoining sites. Furthermore, the stormwater plan utilizing full dispersion of stormwater will not cause any significant degradation to streams or the shoreline. Stratum Group appreciates the opportunity to be of service to you. Should you have any questions please contact our office at (360) 714-9409. Sincerely yours, Stratum GroupCZC) Vg i_I. 4hN".P. Attu .:ib Dan McShane, M.S., L.E.G. �t ' ' �� Licensed Engineering Geologist +,,, .�\,t'„L °:.,�r ' .' DenicM RECEIVED MAR 1 1 r JEFFERSON COUNTY HD APPRO 'ED STORMWATER PLAN Stratum Group Ile I I o 09 MAY 2 2009 J JEFFERSON Ce Y DEPT.OF CO 0 NIT DE Lid EN SIGNATURE" i " t -11 sl rf_E - u,� :a 1 W N am -• Fi z w p ® z I CO Z p • aw Oa .= az �, ._R c. L ZZ HH • w �O " it h!IH1 �J� . � .J � � F'�,, '� a t' i. ...r, ' p H 6 ✓� ? 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UOie �� � 1 'n•� � �(��'l l ( Dl)D �W �m�z ow�xoT(-900iawomQ00 J 1a6aAanneNt. ., c t )� �IiJ • go xi--xo wrcNDaugwzce i. am amrnLL ra❑❑omrnw i m O. 0 a l ' w a Herold Residence sF 3862EOui|oeneRd Pance|#7U1311U21 Pw MLA00'00383 om pnSTJ SH, LOT COVERAGE&IMPERVIOUS SURFACE \,/ rm REF /Mpxovemsmr xuF/ LoTcov Ex/o/ /mpEnv wEvv/�p�xv rO '/,` PR( DIS , PROPOSED NEW RESIDENCE 2224 o o o ov/ z PROPOSED BASEMENT �nn1 1591 o 1591 �� m, n pnnposEooECxs1o^nFps*xoE- n*a 643 o o*n `./' SE) 4 DRIVEWAY mWALKS /000 o u 1558 ro uw' InnALs 6016 azo* n nrnx ER( WE -TOP'-OF BEUFF- w00%uoo'oo''vv � / • • Herold Residence Infiltration Trench Details 3962 E Quilcene Rd Parcel#701311021 M LA08-00363 pipe F.D. 1%0 1`-0 rain min ,..,end cap or plug IFl„c o,,._-clear!outwr from pipe a a °a 99,, 0 -'4"orb"perfaratd pipe la.idfiatilevel ched _ not p 6- grade board Ea `a 215c 2'notches v, 9 .,.type I C B w//olid cover(Ice king) iS'O.C. A 1 a a r[ r+l- a influent pip= (maxdesign �qp fiow .0.8CF$pertr'ench) 7. clean outw'e from pipe oa a PLAN ""'":: �® , 10 feet of length required per 700 kl; 0. . square feet of roof area ' �r'�`"�'' "' � '`f xp`P,r 0 1373 /✓ ci i pipe C.G. galvanized bolts 1 0 j 1' 0 00 ,I--7T SFr'' . NOTES: b 3' '• " 2'x12" `1' c,r, r finis.o r n•;9 h4h :i 1.The tprah stall tp is c harge an sr) ` ,,.; r.•b• a '£ ` er s prevent point discharge andk�r pressure �' ���/�:��� a a' ''VI"' 9 •'• erosion. treated grade . p n n , i,.4"ore'pert ri d 2 Trenctes lie be pI?e ed no clo r bJal'd D c?.,...,4pips Idid fiat than50 itr_t ID one.Krbiher. 10lj fit n $' a a a? 4"Y.4 support pert t r 3 Trench nd gr.--,de board roust be. �a C1�3J1{-�,,•�, tires) Hel Align n_:folimoonvur$ofsiV. tp 4 a S ,. 4.Support post spacings rxauir d by d a A. ' 9Dilc.orditinstoensufegrdeboard fitter brie �'' ` remains Mosel. %15% rrrixfa-r fl cw ccritrol eater ganity treatment in rural aree . rr�� SECTION A-A mike i p,� r-1Pri�, JEFr�nt,nil! 0�p,IT n E! ',,.l;a t?,,!?IY 0 • STRATUM GROUP P.O.Box 2546,Bellingham,WA 98227 Phone(360)714-9409 May 13, 2009 Allan Herold 26020 SE 154th Street Issaquah, WA 98027 Re: Stormwater Plan Review Parcel 701311021, East Quilcene Road Jefferson County, WA Dear Mr. Herold: I have reviewed the details for the draintile and downspout lines as indicated on Drawing A1.2 (attached). This is consistent with my recommendations for the drain lines receiving stormwater from the proposed home. I will forward a copy of this letter directly to Jefferson County Community Development attention to Cara Lekenby. Best of luck on your project. Stratum Group appreciates the opportunity to be of service to you. Should you have any questions please contact our office at (360) 714-9409. Sincerely yours, Str tum Group ;�'t * ' Dan McShane M.S L.E.G. ill •�� ..,L^,q''t `. 1'P , Licensed Engineering Geologist ‘ .. n1.,u'�, ;t 4-do�;A`''," M `3 '' � ,f�tr tillilirlb:�ysyy) 65•«�a ..,��"t�1:f�4.N;ti 4;uGrae i I APPROVED STORMWATER PLAN = MAY 1 4 2009 MAY 2 3 2009 JEFFERSON CO l DEPT.OF CO i NITY D. ,�• T SIGNATURE: ;._ .i_�,/� i 09Lf-L55(SZY):XVi 4LLE-LSS(SZ4):a20 r N LZ086 VM'4enbvss1 9Li116 vm'a+>'!!na ---- 4uot4 1va1S lucid S84 ---- �1��TTTT �Tf1T !T �7�T7V�7 T�i P2.11.2.1Mo.3Z96C C '✓loll 'M✓IS,1Q 1 I u cl�i'11 3DM�QiSI Q101MH __._.. 13S 1V111W8f1S llWa3d 90/£LL Z 01,11833MON3-38d11 8020.3 a 1 II II I."`C* ..-4, si. .4; -. : • - . i eti 11U Piell 1.4 0 ,,,-. i'.',i *!, \* . , ... . x . 4:V-- , • • 41..,„ • , . . • LI. i i g - ITS. :.. Ill I;>. I Nip n p ' — ,6 ti: . . . ,..D q:d p. 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"_ - LV xd ,g'~g 5t- p Z ,a, .s oww .'. §. > HA 5 o�LL=,,§ �wr-$"a° rg: - = 0 o€ w: g fEn C� HLT,-fig 2g a2"4ggw K g, z' V .-- .64'o~.� -< w:gg• °o"=wa gsg`° o° ow Z "�o.� � �w" < g.. Z W rh'2 Q "8w 66 5 C-9— k w ub'2i .g82y-" Y 25E844F w'xa to2;n'6.05'= o01 3 OE" °- 1 W 8 6-o9"-a '-i . 0LL= 0 rKu:Y ,wS 3 ,_. K= a . 0,< • yAlp g _ dW�w. C7 m"�i 3 < g �<g"=_ cvzi gam.°gzgX ! :g3� c� 3: wjg a dBFo:a =a a _▪ figg"am4 4.4 yy�� g • • JEFFERSON COUNTY APPROVED STORMWATER PLAN ti ,A MAY 2 3 2009 MAR 1 6 2009 JEFFERSON COUN� 4`� O ING ' DEPT.OF COMM YDE}� ME SIGNATURE: y � ? i COUNTY I�('I� DEPARTMENT OF COMMUNITY D1VELOI'MtN I HEREIN�:� ale cht l� �l�I 621 Sheridan Street, Port Townsend, Washington 98368 36C 'a,-44. 0 voice, 360/379-4451 fax http://www.co.jefferson.wa.us/commdevelopment/ STORMWATER SITE PLAN SUBMITTAL TEMPLATE MLA# 08-00363 PROJECT/APPLICANT NAME: Alan C. Herold Please answer all of the following questions to the best of your ability. Where the question calls for depiction on a site map, the applicant may choose to either incorporate the elements into the general plot plan for the Master Land Use Application or to submit a separate stormwater site plan map. Project Overview 1. Describe the proposed developed conditions of the site. Indicate position and relative size of proposed improvements on the site map. This project involves a single family, two-bedroom residence with 2224 square feet of living space on two floors,and an unfinished basement of 1591 square feet. Total building footprint will be 1591 square feet. Proposed deck area is 643 square feet and the gravel driveway will be approximately 1558 square feet. The project includes 1000 gallon septic and pump tanks which tie into an existing drain field located 291 feet from building foundation on a separate parcel.The building location has been chosen to ensure a 50 foot setback from the top of bluff. Existing Conditions Summary 2. Describe the existing topography. Indicate contours on the site map. The official building envelope is a level area identified in the original survey and indicated on the accompanying site plan. It is bordered on the west by a steep slope down to Quilcene Bay.The bluff area exhibits an overall slope of approximately 37 degrees.The slope is densely covered with native trees and underbrush. Trees appear to be second or third growth and stand nearly vertical, indicating surficial and gross slope stability during their growth. The building area is bounded on the north by a slope down to an intermittent seasonal stream. Mature cedars and firs as well as other brush cover much of the slope and old growth stumps are present on portions of the slope. The site is bordered on the East by E. Quilcene Road and on the South by a relatively flat, undeveloped 5 acre parcel. Contours are identified on the accompanying site map. 3. Describe the existing vegetation. Indicate native vegetation areas on the site map. Trees on site are a mix of Douglas fir, hemlock, western red cedar, big leaf maple, red alder and madrone. Ground cover is comprised of primarily with Oregon grape,salal, sword fern Vine Maple and other brush. 4. Describe the existing soils. Indicate soil type on the site map. This area is underlain Beausite-Rock outcrop complex and Alderwood gravelly sandy loam. The Beausite-Rock outcrop soils consist of colluvium and residuum derived from the underlying Twin Rivers Formation siltstone and sandstone.The soil is classified as well drained. The bedrock is highly fractured and layered. The soil is the predominant soil on the steep shoreline bluff slope and on the western portion of the upland area of the property. The Alderwood gravelly sandy loam soil derived from basal till and consists of sand and gravel to depths greater than 60 inches. The soil is classified as moderately well drained. The Alderwood soil underlies the eastern portion of the property. S • Hand dug test pits were dug and/or augered to determine soil properties in relation to drainage. Soils encountered were consistent with the soil descriptions above. Soil under the proposed building site are primarily fractured siltstone and sandstone residuum.With some areas of gravelly soils towards the eastern portion of the building area. Due to past site grading to create a level area,the thickness of the residuum is thinner than the native soils. The area to the north of the proposed home site is underlain silty residuum soils north of the west end of the proposed home site. The soils north of the proposed home site are Alderwood soils and include areas of thick topsoil with native forest duff overlying the gravely soils. The soil duff and top soil layer is approximately 2.5 feet deep and sandy gravel soils extend to a depth of at least 4.5 feet. 5. Describe the existing site hydrology(i.e., drainage; behavior of water on the site—above, below, and on the ground). Indicate existing stormwater drainage to and from the site on the site map. Depict separate drainage basins on the site map, if applicable, and indicate acreage of each. A small seasonal intermittent stream flows from across the northeast corner of the property flowing from the southeast to the northwest.The stream continues towards the bluff face where it daylights on the bluff face as a series of small cascades across the bedrock to the beach below. No other surface flow is evident on the property. Areas where soils have been graded and compacted where the home is proposed have been compacted such that minor surface flow off of the building pad area may occasionally take place during very heavy rainfall events. Otherwise soils on the site are well drained. Downward drainage of surface water into the soil ultimately becomes somewhat impeded by the underlying bedrock. However, besides the small intermittent stream there are no indications of springs or seeps on the shoreline bluff slope. Due to the topography of the site surface drainage on the shoreline bluff slope is. i d, 1,ifsplf and a very limited area at the top of the bluff. Most of the upland area of the site is slop �t_ �*atet,.iY present would drain towards the slope to the south of the intermittent small stream.' nf.'; 6. Describe any excess levels of noise generated by the proposed use or activity: MAR .1. ! Ll',.:,t Short-term construction related noise only. No long term noise sources. II y�EFE CCI.�N� DC 7. Describe significant geographic features and critical areas (i.e., environmentally sensiti reas such as wetlands, streams, steep slopes, etc.)on the site. Indicate location on the site map. The property is bordered on the west by a steep slope down to Quilcene Bay. This slope is a landslide hazard area and erosion hazard area.An intermittent stream crosses the northeast corner of the property. 8. Describe the general vicinity of the site, including adjacent land uses and structures, utilities, roads, and sensitive/critical areas(streams,wetlands, lakes, steep slopes, etc.). The project site is approximately 4 miles from Center Road on E Quilcene Road with the parcel fronting eastern shore of Quilcene Bay. Adjacent land uses include a private residence to the North, a small private residence across E Quilcene Rd to the east, an undeveloped 5 acre parcel to the South, and Quilcene Bay to the west. E Quilcene Rd borders the property to the east. Water to the site is from a share well located on a parcel across E Quilcene Rd to the east. Electrical power is sourced from a power pole located in the southeast corner of the parcel. The septic field for the property is located to the east on a parcel across E Quilcene Road. Sensitive areas include the steep slope on the west side of the property a id QuilcAP Vwest of I he property. An intermittent stream is located to the north. STORMWATER PLAN Permanent Stormwater Control Plan MAY 282009 This portion of the Stormwater Site Plan consists of the selection and installatixn of the appropriate stormwater control BMPs and.facilities to remain in place after construction of the project is completed. �,^ JEFFERSON COUNTY (� "Medium" size projects are required to have the totals calculated of all impen iousraiRtiOngialitTtT di y f yious surfaces, and pollution-generating pervious surfaces to verify that the thresolgIGRATURBment facilities and flow control facilities are not exceeded. 9. Describe the developed site hydrology, as proposed. Indicate whether stormwater will be fully dispersed (i.e., per BMP T5.30 in the Manual) or, if not, what types of stormwater flow control will be utilized for the site or specific threshold discharge areas within the site. Locate these facilities on the site plan and differentiate proposed facilities from existing facilities. Site hydrology will not be altered. Stormwater will be allowed to sheet flow off of the access driveway as it currently does. Stormwater from the roof area will be directed to a dispersion/infiltration trench to the north of the home site. Dispersed stormwater will infiltrate deep into the ground. BMP T5.30 Full Dispersion will be utilized on this site. The cleared area for development will be less than 65% of the site. The area not cleared will be left primarily as tree covered with native brush. The property is a rural single-family residential development and less than 10%of the area will be covered with impervious surfaces. 10. If the project requires the use of stormwater treatment facilities, describe the types of stormwater treatment facilities proposed for use on the site. Locate these facilities on the site plan and differentiate proposed facilities from existing facilities. [This is normally for"large"projects or projects that involve the potential for dispersion of contaminants.] The area of pollution-generating impervious surfaces is less than the threshold area of 5,000 sf. No treatment is required. However, stormwater from the driveway area will sheet flow to the side of the driveway and infiltrate into the ground. 11. Describe the performance goals and standards applicable to the project. Stormwater will be fully dispersed and infiltrated into the ground. Stormwater will be directed away from steep shoreline bluff slope and towards the north portion of the property into deep well drained native soils. 12. Describe the flow control system. All stormwater will be fully dispersed. The site does not require flow control. 13. Describe the water quality system. Dispersion trenches will be gravel filled, wrapped in filter fabric and top protected with fill. Native plans will be maintained and left in tact as much as practical and will be left in place down slope from the dispersion trench. Sheet run off to the sides of the driveway will infiltrate into the ground with minimum surface flow through vegetated areas 14. Describe the conveyance system analysis and design. Design is simply a 4-inch pipe conveying stormwater to the dispersion trenches. 15. Describe the source of fill material, physical characteristics of fill material, and deposition of excess material. .No fill material will be required except for the necessary drainage fill gravel and sand for the foundation. Excavated materials will be relocated onsite away from the steep shoreline slope and away from the slope on the north side of the property or hauled off-property. 16. Proposed methods of placement and compaction consistent with the applicable standards on Appendix Chapter 33 of the Uniform Building Code. A compactor will be used as necessary to achieve 90% of maximum density for foundation and driveway support. 17. Describe the.proposed surfacing material. Grass with gravel driveway. TL i ,11 '<, � ,. 18. Describe methods for restoration of the site. i Any disturbed sites will be restored with native plants: salal, sword fern and Oregon grape. 1 i i4Ti s L:.;; JEEEEEM LU 1 j,Y Di: • • 19. An Operation and Maintenance Manual is required for each flow control and treatment facility. [This is normally required for "large"projects only and only those for which facilities are required to control flow or treat runoff.] If included, list the Manuals here. RECEIVED N/A MAR 99 LIGiJ 20. List here and include any special reports or studies conducted to prepare the Stormwater Site Plan. See attached geotechnical reports. JEFFER q"1 COUNTY DCD • 21. List other necessary permits and approvals as required by other regulatory agencies. If those permits or approvals include conditions that affect the drainage plan or contain more restrictive drainage-related requirements, describe those conditions or restrictions here. A septic permit(SEP06-00237)was approved on November 11, 2006 and is being reviewed for consistency with the submitted site plan. CONSTRUCTION STORMWATER POLLUTION PREVENTION PLAN (SWPPP) The Construction SWPPP addresses sediment and erosion control during construction. The BMPs indicated by the applicant in the template that follows must be installed on the ground during all construction phases of the project. The proponent is responsible for preventing sediment and erosion impacts to environmentally sensitive areas and off-site areas. Consult the-Corr c_ *_ - - •• - Pollution Prevention (SWPP) Best Management Practices (BMPs) Packet iiirtdr.'': ''�- ,Vf iDIarly with rural residential development. STORMWATER PLAN SECTION I - CONSTRUCTION SWPPP NARRATIVE MAY Z 8 2009 1. Construction Stormwater Pollution Plan Elements. Describe how each of the Constructio SWPPP Iamantc has_heen or wilt be addressed. Identify the type and location of BMPs used to satisfy the required element. If an el:ment is not ,0,. 14 es� ,„••.sal, justify in writing. Descriptions of the 12 Elements are found at section 2.5.2 of the Manual (begi ning My ,,��. ISI� � , � IT 7�:• �%iPMBNT SIGNATURE. 12 Required Elements—Construction SWPPP 1. Mark Clearing Limits. The building-affected portion of the parcel does not require any tree removal. Silt fences will be placed around the construction area to ensure that sediment does not flow toward the shoreline or LSHA's. 2. Establish Construction Access. A stabilized construction entrance will be provided at the interface to E Quilcene Rd. It will be a minimum of 25 feet in length by 10 feet of width. It will consist of 4 to 8 inch quarry spalls to a depth of one foot. 3. Control Flow Rates. Native vegetation will be maintained as a wide vegetated strip between the proposed home site and the intermittent stream to the north consistent with BMP C243(Ecology, 2005). The slope to the north is underlain by well drained soils consisting of gravely sand with thick topsoil. Sediment traps will be installed as required. Given the general topography of this parcel and the wide native vegetated area to the north and well drained soils to the north of the proposed building area, it is expected that sediemt traps will not likely be required. 4. Install Sediment Controls. • Silt fences will be installed prior to site grading. Please see the attached map for location of silt fences. 5. Stabilize Soils. Stockpiled soil and areas exposed for short periods (less than two days between October 1 and April 30 and less than one week between May 1 and September 30 may be stabilized using appropriate measures from the following: mulch,straw or nets and blankets. 6. Protect Slopes. Silt fencing will be installed.The topography of the site is such that any possible drainage will be towards the north and not towards the steep shoreline bluff. Please see the attached map for location. 7. Protect Drain Inlets. There are no drain inlets that can be affected. 8. Stabilize Channels and Outlets. There are no onsite channels or ditches that will be impacted. Native vegetation will be left in tact between the proposed home site and the intermittent stream to the north. 9. Control Pollutants. Eq CEr rJ F1 " No vehicle maintenance will be performed and construction debris will be safely stored. MAR, 1 n . 10. Control De-Watering (the act of pumping groundwater or stormwater away from an active construction site). (..1 •1 1;� any;P! ;l No construction dewatering will be conducted. LI.. I E,., ,ie. C ! 4 11. Maintain Best Management Practices(BMPs). BMPs will be maintained.All temporary and permanent BMPs shall be mainatained, repaired and enhanced as necessary to assure continued performance of their intended functions.All BMPs should be inspected at a minimum on a weekly basis, during and immediately following s significant storm event(any storm exceeding 0.5 inches within 24 hours or 2.0 inches of rainfall within 7 days). 12. Manage the Project. All construction work shall follow the above described actions. If circumstances arise that require additional BMPs beyond those listed, it is the owner/contractor's responsibility to implement those BMPs.The owner/contractor should inspect the site for BMP implementation on at least a weekly basis and more frequently during significant rainfall events. 2. Adjacent Areas. a. Description of the adjacent areas that may be affected by site disturbance (e.g., streams, lakes,wetlands, residential areas, roads). An intermittent stream is located to the north of the proposed home site. The stream is separated from the proposed building area by well vegetated native vegetation including mature trees. The stream should not be affected. The intermittent stream has flows to the northwest off of the site and intersects the shoreline bluff slope to the northwest. The stream at the bluff face and a short distance upstream of the bluff face is underlain by bedrock. The shoreline bluff will not be effected by the clearing the proposed development as storm water readily can be directed towards the north and not towards the shoreline bluff slope. b. Description of the downstream drainage path leading from the site to the receiving body of water(minimum distance of 400 yards). Stormwater will be infiltrated into the ground. The intermittent stream down slope from the proposed development is located approximately 78 feet at the closest point of development. As noted above the stream flows to the northwest off of the property to the shoreline bluff.The stream flows down to the beach over bedrock on the bluff slope. • 3. Environmentally Sensitive Areas. a. Description of environmentally sensitive areas that are on or adjacent to the site. The property is bordered on the west by a steep shoreline slope down to Quilcene Bay. This slope is a potential landslide hazard area and potential erosion hazard area.Am intermittent stream is located to the north in a stream valley. b. Description of special requirements for working in or near environmentally sensitive areas. All work will be within the limits of the clearing area.Any run off will be directed to the north and the native vegetation on the slope between the proposed home site and the intermittent stream will be maintained. 4. Erosion Problem Areas. Description of potential erosion problems on site in the context of the characteristics of the on-site soils (e.g., erodibility, settleability, permeability, depth,texture, soil structure). Soils on the site are well drained.The excavation for the home site may reach shallow weathered and fractured bedrock with lower permeability than the native soils otherwise found on the site.All run off from this are will be directed towards the north towards well drained soils and areas with thick native topsoil. Any run off will easily be directed away from the steep shoreline bluff slope. 5. Construction Phasing. a. Construction sequence Initial phase will be to prepare site access with a stabilized construction access from East Quilcene Road. Silt fences will be installed around the perimeter of the west and north sides of the area to be developed. Once those steps are completed,foundation excavation and preparation will begin.All excavated soils and disturbed soil will be stabilized as soon as foundation work is completed and the rest of the home construction will proceed. Stormwater dispersion/infiltration trenches will be constructed in preparation for completion of the home and hooked up to the roof drains upon completion of the roof. b. Construction phasing (if proposed) This project is for the construction of a single home and phasing is not needed beyond the appropriate construction sequence described above. 6. Construction Schedule. Wet season is October 1 through April 30(page 2-21 of the Manual). C l�ir v I. Provide a proposed construction schedule. �� ✓ � ji April 1 to Sept 1 { R r,�.) II. Wet Season Construction Activities. a. Proposed wet season construction activities. Initial foundation work may take place in the late portion of the wet season. b. Proposed wet season construction activities for environmentally sensitive areas. Environmentally sensitive areas will not be at risk as long as the BMPs proposed are followed. 7. Financial/Ownership Responsibilities. a. Identify the property owner responsible for the initiation of bonds and/or other financial securities. Alan C. Herold b. Describe bonds and/or other evidence of financial responsibility for liability associated with erosion and sedimentation impacts. Property owner will contract only with licensed, insured,and bonded trades people. • 8. Engineering Calculations. Provide Design Calculations on a separate sheet for the fo lowing, if applicable. a. Sediment Ponds/Traps. NA b. Diversions. NA. c. Waterways. NA d. Runoff/Stormwater Detention Calculations NA • • lgii', 1 € 2 C.) I'ifrn` °.,, CPT Ty' , rr, 04/19/2006 NED 15: 25 FAX 4411130 6523 City of Renton Exec OfC • l 010/012 09/20/2002 15:09 3604529490 NTI PAGE 03 January 24, 2002 Glenn Gustayson PO Box 609 Quilcene, WA 98376 Subject: Update Geotechnical Report for Lot A, Glenview Short Plat in Section 31,T 27 N, R 1 W, W.M.,Jefferson County, WA Dear Mr. Gustayson: At your request, Bill Payton of Northwestern Territories, Inc. (NTI) met with you at the above location on January 15, 2002 to conduct an update geotechnical inspection of Lot A. It is understood that you plan to sell Lot A, and that this report will be used to satisfy Jefferson County's requirement for a geotechnical report.The original report, completed in August, 1993 by NTI for Lots A, B and C, is included with, and made a part of,this update. The update geotechnical inspection consisted of a visual inspection of the lot including a traverse of the bluff and beach via a pathway down the face of the bluff to determine if there had been any new slide activity since the original report. No evidence of further instability was noticed and thus, the conclusions and recommendations of the original report are still valid. The following recommendations should also be considered with regards to development of the subject property: 1, Heavy irrigation or other activities that would contribute large quantities of water to the soil should be avoided_ One cause of landslides is the presence of excessive groundwater in the soil near the bluff. 2. Runoff from roofs and other hard surfaces such as driveways and decks should be controlled and routed to a detention basin, dry well, other drainage control device or to the existing natural ravines such that surface water discharge or sedimentation to adjacent properties will not be significantly higher than pre-developrnent conditions. The water should not be infiltrated between the house and the bluff. An engineered drainage control plan should be developed for this property to address these issues. 2 JEFUS;J 1 ;�� 4''. 04/19/2006 WED 15: 25 FAx 41030 6523 City of Fenton Exec Ofc • 09/20/2002 15:09 3604528498 NTI 3. Septic systems and/or detention basins should not be constru between the house and the bluff. 4. All drainage control devices should be maintained in good wor- and inspected at least once a year. 5. Silt fences or other sediment control devices may need to be order to prevent sedimentation to adjacent properties during cal Based on the findings, recommendations and limitations of this report 1. There has been landslide activity on the bluff face in the past, I the report recommendations should provide for minimal landsli i to the proposed home. 2. An analysis of slope stability indicates that the proposed home be subject to risk of landslide under normal conditions. 3. The proposal would not increase surface water discharge or sedimentation to adjacent properties. 4. The proposal would not decrease slope stability on adjacent pr- 5. The proposed home site would be stable under normal geologi conditions. Limitations This report is based on a visual inspection of the existing site condition major catastrophic events such as earthquakes or abnormal weather er No scientific measurements, tests or calculations were performed. Thu and report are limited to the normal standard of care of the industry fo— investigation without benefit of scientific data and calculations. The sole objective of this investigation has been to diagnose the geot conditions at the subject property.The property may be affected by rem pertaining to issues such as wetlands,or wildlife habitat that are not act this report. 3 04/19/2006 WED 15: 25 FAx 425 430 6523 City of Renton Exec Ofc UO12/012 09/20/2002 15:09 36045.8 NTI • PAGE 05 The report has been prepared for the exclusive use of our client in conjunction with the above referenced project. It may be used by others only with expressed written permission of the Engineer. The report has not been prepared for use by others or for other uses. The observations, interpretations,and conclusions herein are based on generally accepted professional engineering and geologic principles and practice. This warranty is in lieu of all others, either expressed or implied. Sincerely, NORTHWESTERN TERRITORIES, INC. .1sRRY Nei J. R. Jerry Newlin, P.E. Principal Engineer VOA:, raga, 152CPIPM Bill Payton, L.E.G. Engineering Geologist . i G:\Gen1Bii11Reports\GUSG0201.btuffstability.31(27-1).Bolton Peninsuia.doc RECER'ED JUL 2 9 2003 JEFFERSON COUNTY CUD 04/19/2006 WED 15: 21 FAX 425 430 6523 City of Renton Exec Ofe J001/012 C2/17/2002 10:56 360762 WINDERMERE HOOD PAGE 02 i Alf � 4;. NORTHWESTERN TERRITORIES, INC. ilittr livii �, Eng.,.NI Land SLICAVOrs le PrannCrs i1 Caurrucrion Coo,t*nauon al Maaes a's ThstM4fg) N-,?..,1 1. ,! ! , ! :; ; . . . ,. : ,.. .... , 7,......-- .i) . i_b ..:.1vn , ...... .;,. ;iil i , \ 1.1 SW "'r" ` G lth.A1"1-4e__ ./ SLOPE SPPRILTPY EvALUA ON GUSTAVSON SHORT PLAT Lot 3, Pope Resource Subdivision of Government Lots 1 and 2 ' Section 31 North, Township 27 North, Range 1 West,, W.M.. Jefferson County, Washington Prepared for • • GLENN 0. GUSTAVSON . • Prepared by NORTHWESTERN TERRITORIES, INC. e • ire^' 2 1 • August, 1993 . 711 SOuTri PEABODY,,PORT ANGELES,WA 98362 (296)452-8491 1-800-854.5545 FAX 452.8498 AN INDEPENDENTLY OWNED AITILIATE OF DECKER INVESTIGATIVE ENGINEERING CO RA uuilY/zuue weu i5: zi FAX 425 430 6523 City of Renton Exec Ofc I6002/012 ?'=/17/2902 10:56 360765411 WINDERMERE HOODCANA. PAGE 03 • • SLOPE STABILITY EVALUATION' • SCOPE AND PURPOSE • • . Our evaluation of bluff stability was reconnaissance in nature and consisted of visual observations by Mr. Blase Cylwik, Engineering Geologist. Observation efforts included traverse of the bluff • slope, shoreline and upper areas of the property designated for residential construction. No subsurface exploration was performed. • The purpose of our study was to provide information concerning the proposed division of the property into three residential lots--Lots A and B west of Quilcene Road, and Lot C east of the road. Por- tions of Lots A and B are also present east of the road. Our study concerns that portioneof the property lying west of the road. PROPERTY DESCt ZPTICN The property proposed to be divided is near the south terminus of • the Bolton Peninsula and consists of Lots A and B that extend about 350 feet west of Quilcene Road down to Quilcene Bay. Each of the • lots are 150 feet wide except that an area of about 200 feet by 200 • • feet and another of irregular shape about 600 feet long east of the • • road are portions of Lots A and B, respectively. These areas are to be used for septic drainfields. Lot C lies east of these latter areas (Figure 1 ) . REGIONAL GEOLOG • The bluff and property to the east are underlain by massive but highly lointed grey to brown, well consolidated siltstone of the Twin River formation that is of lower Miocene age. This formation • • .:is overlain in the upper. bluff and portions of the property by poorly sorted silt, sand and gravel sediments. These sediments are • of glacial outwash origin and were deposited over 10,-000 years ago. They are generally dense but are not well consolidated and rela- tively permeable. The bluff has been formed by marine erosion and undercutting along the shoreline, resulting in oversteepening and subsequent periodic • ,downward movement of bluff materials by erosion, slow creep of surface soils and slumping. In general., the rate of average annual • bluff retreat can vary from a few inches to several feet. In this • • • • 04/19/2006 WED 15: 23 FAx 425 430 6523 City of Renton Exec Ofc U003/012 r3/17/2002 10:56 360765• WINDERMERE HOODCANO PAGE 04 e ' area, the bluff does not appear to be aggressive marine undercut- ting, perhaps because of the relatively firm siltstone and protec- tion afforded by Quilcene Bay- X.,0Cilex L. CONDITIONS IONS The bluff area along Lots A and B is 75 to 100 feet in height and has an overall slope of about 37 degrees. The slope is densely tree and brush covered. Most of the trees appear to be second to third growth. Over most of the bluff the trees stand nearby vertically indicating surficial and grass slope stability during their growth. A landslide is present on the bluff between Lots A and B (Figure 1) . The base of the landslide is about 100 feet wide along the ' shoreline. It narrows and extends to near the top of the bluff. The slide probably occurred over 50 years ago and appears to have . been subject to slow downward creep since that time. The landslide probably was caused by a combination of adversely oriented jointing in the siltstone, erosion along the ravine and over-steepening of • the bluff by marine erosion. The base of the landslide is seen in Photos 1 and 2. A shallow ravine extends northwest from Quilcene Road across the northeast corner of Lot B and western slope of Lot A. The sides of the ravine are brush and tree-covered (Photo 3) . Another similar ravine extends across the northeast corner of Lot A (Photo 4) _ Erosion or downcutting in the ravines appears to have been negligi- ble over the past at least several years. • A shallow bowl-shaped depression along the ;south side of the ravine • in Lot B may represent past shallow slumping of soils exposed ' by ravine erosion. Slumping does not appear-to be presently active (Photo 3) . The large relatively .level areas adjacent 'to and west of Quilcene • .Road appear to be largely natural arid appear permanent as a result . of having been recently cleared. • .GONG LYE S I ONS • • (1) The relatively level portions of Lots A and B west of Quilcene Road appear to be adequately stable to support residential construction. It is understood that septic drainfields for each lot will be east of Quilcene Road. • RECEIVED • JUL 2 9 2008 • •• JEF.FERSON COUNTY DCD • ' ' • 04/19/2006 WED 15: 23 FAX 425 430 6523 City of Renton Exec Ofc U004/012 ^':'/17/2002 10:56 360765 WINDERM_RE HOODCAN• PAGE 05 • (2) Runoff carried by the ravine down the bluff on Lot A may have been a contributing factor to formations of the landslide on the bluff. However, the ravine does not appear to be aggres- sively eroding the slope or adjacent landslide. (3) The bluff appears to be grossly stable. The upper part of the bluff above the landslide is relatively steep and may be subject to accelerated sloughing or erosion because of this. (4) The possible shallow slump area along the ravine on Lot B appears to be stable and should not present a hazard if • structural footings are founded in the underlying firm or dense earth materials_ • mECO ENDA T IONS • (1) Permanent structures should be located a minimum of 50 feet back (east) of the existing top-of-bluff edge and 25 feet back of the tap of ravine slopes_ (2) Structural foundations should be founded at least 18 inches into firm or dense in-plate natural earth materials. Addi- tional considerations may be necessary if any fill or loose soils are encountered adjacent to the top-of-ravine banks_ (3) Septic system drain fields should be located east of Quilcene Road as proposed. (4) Sloping areas along the ravines and top of bluff should be ' planted with deep-rooted ground cover to minimize erosion and .surface sloughing. (5) Runoff from roof downspouts and paved areas should be con-• ducted via lined downdrains to velocity dissi.pators in the flowli.ne of existing natural ravines. • STANDARD DISCLOSURE STATEMENT This report is based on a visual inspection of the existing site conditions._ No scientific 'measurements, tests or calculations were performed. The findings and report are limited to the normal standard' of care of the industry for an ' investigation without benefit of scientific data and calculations. Unless construction plans are reviewed and the construction work is inspected by the Engineer, no warranty is made by the Engineer concerning conformity of the construction to the conclusions and recommendations of this. report. • The sole objective of this investigation has been to diagnose the geotechnical conditions at the site. ' The report has been prepared . • for ,the exclusive use of Glenn 0. Gustayson and may be us'ed'.by others only with expressed written permission of the Engineer,.. The • • Q4/19/2006 WED 15: 23 Fax 425 430 6523 City of Renton Exec Ofc U005/012 •9/17/2002 10:56 3607650 WTNDERMERE HOODCAN• PAGE 06 ' report has not been prepared for use by others or other uses. The observations, interpretations, and conclusions herein are based on generally accepted professional engineering and geologic principles and practice. This warranty is in lieu of all others, either expressed or Implied. Blase Cylwik. Engineering Geolo ' o IL,-b} 4 �*As.41t," • ' Steve M. Luxto mac. �. '. Professional E i eer2:3.di ,; •txp:a�s gr. • • -2)114 . . RECEIVE TD ; JUL 2 . 2008 JEffEfSDN EUUNIY DCD • • . fc: Gustvsn.Rpt . ' lair: Ebg/Rpt. , • 04/19/2006 WED 15: 241 FAX 425 430 6523 City of Renton Exec Ofc 1006/012 79/17/2002 10:56 26E1765. WINDERMERE HOODCANAS PAGE 07 ---!- i : i . .1...r..`. 1.: 1 1..... .— .. . . • . I.I I. "..t ts. 4-.4 2. " i , •_ _ ; M��/�"` 'y---_. •h . .... _ • . 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Box 2546,Bellingham, WA 98227 Phone(360)714-9409 February 26, 2009 R-CEPVT. t Allan Herold MAR 1 C 2Grn 26020 SE 154th Street Issaquah, WA 98027 JEFFERSON COUNTY HO Re: Stormwater Plan and Geotechnical Review Parcel 701311021, East Quilcene Road Jefferson County, WA Dear Mr. Herold: I have reviewed the proposed development plans for your property, reviewed the geotcechnical reports for the site and reviewed and added information for the stormwater submittal to Jefferson County. The proposed development can fully disperse stormwater consistent with the Ecology (2005) BMP T5.30 with sheet flow dispersion from the driveway area consistent with Ecology (2005)BMP T5.12 and infiltration trenches for roof run off consistent with Ecology (2005) BMP T5.10. Stormwater management in this manner is consistent with the Ecology (2005) stormwater manual for Western Washington and is consistent with the geotechnical reports previously prepared for the site and is consistent with my own assessment of geologic conditions at the site. Setbacks and Slope Stability I reviewed the NTI(1993) and NTI (2002) reports regarding geology conditions at the site and I visited the site and inspected the geology conditions at the site. Conditions I observed at the site are generally consistent with the observations by NTI and I concur with the recommendations made by NTI. The initial geotechnical report NTI (1993) for the site recommended permanent structures should be located a minimum of 50 feet back from the top of the steep shoreline bluff slope. The proposed home will be located 50 feet back from the top of the steep shoreline slope. Based on my inspection of the site, it is my opinion that this distance will be protective of the home for the expected life of the home (at least 100 years). It is acceptable to have a deck within the 50-foot setback area as long as the deck is not structurally connected to the home. The proposed deck will be located no closer than 44 feet to the top of the bluff slope. The location of the deck 44 feet from the top of the bluff slope will not increase the risk to the proposed home nor will it increase the risk of slope failures on the steep shoreline bluff slope. NTI (1993) described a shallow bowl-shaped depression along the south side of the slope down towards the intermittent stream. NTI indicated that the area may represent past shallow slumping of soils, but noted that the potential slump area was not active. Past grading has taken place at this location such that soil was removed from the upper part of the bowl like area and a rockery • • February 26,2009 Parcel 701311021,Jefferson County,WA Stormwater Plan wall was constructed between the bowl area and the proposed building area. No recent movement was evident. Prior to the NTI site visit, the level area had already been graded and it is possible that past grading had placed organic rich soils with no compaction on the slope and some settlement had taken place. I also observed what may be a very old skid road across the intermittent stream valley. NTI recommended a setback from this bowl shaped area of 25 feet. The proposed home site will be located greater than 25 feet from the bowl area. The proposed building area above this are is underlain by weathered bedrock soil. Based on my observations placement of the house on the level building area as proposed will be appropriate and the home will not be subject to settlement from soils on the slope. Stormwater Management The proposed stormwater plan meets the recommendations of NTI, and is consistent with the Ecology(2005) stormwater manual adopted by Jefferson County. The proposed stormwater management for the site is for full dispersion consistent with Ecology (2005) BMPT5.30. The site will be left in greater than 65%tree and native vegetation and the amount of impervious surfaces is less than 10% of the site. The stormwater generated by the driveway area is less than the threshold requiring pretreatment and will be managed by BMP T5.12 (sheet flow). Stormwater from the roof area will be managed by BMP T5.10 (infiltration). The proposed stormwater management from the driveway area will be to allow sheet flow off of the driveway surface towards the north consistent with Ecology (2005) BMP T5.12. The following figure indicates where sheet flow dispersal should take place. Soils to the north of the driveway area consist of well drained soils with topsoil and native vegetation. The soils are Alderwood gravelly sandy loam. These soils are well drained and test pit observations on the gentle slope below the driveway to the north are consistent with these soils being well drained. Sheet flow off of the driveway to the areas indicted will not lead to any surface water flow across the site and the soils will infiltrate all runoff before any water reaches the intermittent stream located approximately 75 feet to the northeast. RECEIVED MAR 1 ! 2009 JEFF{F1S N COUNTY DCD Stratum Group File: 1.10.09 2 o:-‘4,0,..,,,j- 1-7,C'E',11I� February 26,2009 kr a .%,; MAR 1 C 2009 Parcel 7013 1 1021,Jefferson County,WA tF. Stormwater Plan 'k — k. � c' �EFE ; CO 11Y BCD.yk0 � ;r . .i . -w -termittent i •_ ,rsG' �• s3 =•'S ream <0 TOP OF SLOPE t 1.1 > (TYP.) C� 20'BUILDING ,! ,7„.., i a co Infiltration '� . SETBACK LINE ! r Trench SLUMP 43 ---``-------- ,` Z Pc EXIST STEPS - m 7:11 _- AREA : •OCKERY • al_ — SE K p WATER STUB 1 4,4. Z . 1.4.:.4 r �` 1f `� a<) ,;,.!' • 558 Stormwater g ti0.. I. NE' ; ,. ��.. sheet flow off -, , ■..: :d 10 ' -. J, P:i: ,�-. driveway into .-- 1.1 / to . 0 . 1 native soils .:-fl- / .._._- w : * _ and vegetation �. ... 4'...1.1 1 142.- •-- ' ROCKERY AT il I PROP.LINE I U.1 2 1 Stormwater from the roof of the proposed home should be routed to a dispersion/infiltration trench located to the northeast of the home site. Stormwater from the roof should be tight lined to the infiltration trench. The soils at the infiltration trench are well drained and the site is located upslope of native vegetation with thick(2 feet)topsoil. This site is the most appropriate for infiltration on the site as soils at this location are thick and well drained and increased water at this location will not cause any slope stability issues for the shoreline bluff slope. Directing stormwater to this area is consistent with the NTI recommendations to direct stormwater away from the steep shoreline slope and is consistent with my own opinion that this location will not cause any slope stability problems on the steep shoreline bluff slope. The stormwater generating surfaces of the roof and driveway are below the threshold level of 10,000 sf and less than the 3/4 acre threshold of land has been cleared of native vegetation for development requiring flow control(see Ecology,2005 —Volume I, Section 2.5.7). However the Stratum Group File:1.10.09 3 it • * . February 26,2009 Parcel 701311021,Jefferson County,WA Stormwater Plan infiltration trench should be at least 10 feet long for every 700 sf of roof area and should be installed such that the dispersion pipe is level. A typical design per Ecology recommendations is presented below. pipe0.D. 1 mat nun w-end cap or plug 111114,"11 p o_ clean out me from pipe notched �¢ 70 6 4"o r 6"peria rated pipe laid flatAeyrel 0 e, grade board _,. a 2"x 2"notches v. a 4 type I C B wfso lid cove r(locking) 1 'O.G. 1 ia 1 a.1=M:a r 11- o uent pipe desgn {i9 d fbinflw0.6 FS pertr�errcht as A, 7. 9 o v clean out+,vye from pipe tile% v PLAN RE CEr VE l .pipe 0.D. AR 1 6 2009 galvanized bolt\ 1,4 1'4) [[[ yf min min n`)'` ,�..."' l L! f[P ?M, Si 11" I. ,, � s K' U rl�,u6�f C�V1� : 'x12"T• 4 ,b � er,, . • :l ` . ' Pressure '"�. < ' j,;RSa a9 \ a.. 9 N 1. � a 4"or 6"perforated treated rode ' �s o o $ board °*:,A'As" Ca 4 ,9 4 J.,. pipe laid fiat �. + ., �; NOTES: 4"x 'support pCti � ` clean 59ie fires) 1.This trench shalt to oonstrvicedso bas to prevent paint discharge andbr j • 'fo-r 1 .14 •3/4 washed r�;,k erosion. Ifetv Q ' .. 2.Trenches may be placed nocbser .." if ", ,`: than 60 feet t one another 1oo feet filter f�tbri:. t along fbwii ne l x 15�b flan cart !lv't er qusJity 3.Trench and grarh_ board must be level Align to fol bN co nto urs of sit. treernert in rural areas. 4.Support post swing as required by EIION AY X� soil conditions to ensure gra.de board Jr remains h_vel. Stratum Group File: 1.10.09 4 4111 • a February 26,2009 Parcel 701311021,Jefferson County,WA Stormwater Plan Conclusion Based on my site assessment and the investigation by NTI, it is my opinion that development of the site and the following of the stormwater plan will not cause any adverse impacts to the stability of the site or adjoining sites. Furthermore, the stormwater plan utilizing full dispersion of stormwater will not cause any significant degradation to streams or the shoreline. Stratum Group appreciates the opportunity to be of service to you. Should you have any questions please contact our office at (360) 714-9409. Sincerely yours, Stratum Group ILO *0147 Dan McShane, M.S., L.E.G. `‘ui V.zaitiE<:'.pC.,aTNtc, ° Licensed Engineering Geologist •- ,, )'=. d r . Daniel RECEIVED MAR 1 6 2009 JEFFERSON COUNTY BCD Stratum Group File: 1.10.09 5 T T r- C._. 57..A - Z • /��� /gy p_ \\ _`- r • pe„ Co �4r, 71 717 s c < r r��oN,„,„„Tif7 r > EAU i „ „,/,.., rn tifi A � ; D II P B ::,:, . - .27 V d > -T e-e va ,- 1, >e a-r uo• 4 O 4'-1 1/4. ♦ e'-11 e/4• e.o• \ 1o•C• a-0' . _ m_ •LITIN PM T � / / a i • r _, _ ' �� N O II N 55S 411 ' n �J N ' i I 4 g,s1� -0. cry s• p s n _ A ' ?, y �its�• it e-a,n• /O \ \ (41'1. # 1_ ,e 1/2• ]� • ! �111�I� • v v lilliiii ' MI r 1-'r,n ='j' v... 1 t• 4 V A 0.11 I= I „e yp 5 I______I • ,; : gat 4-0 4 u ' .Ar.M�. ? d_ R59 / �i•s KITG 1, 11 Z SI d s' 5 , 1 P�i� . t 4� € i g� �CpI ,eT '■ o1 M, yi5 * y 4 al ii m �� Y • ll i4� f4 ~�:�•w g I ��� • ..t .w1 1 ,y,<<xrvYkXku�,`,' ■ / / / O e Jw \2,1/2\a'-10 1/p•\2'-4•\ ♦a'-e'\a'-r e'-101 '-D'\u1�.�3'-3 tn" 4'-e,/a• urn A aMW '-a' 4f-O ♦ '' '_ / \ \ ,s-,I" \ 4'-c \ '. _ (c Ki N ► W NLs 0 � 1 f»i)VD7C f71 CI .�N -i f71 f/l vf/1�� Z�Im�v m-n Zf/1-iOv _. 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N - -" 3962 E.Quilcene Road 485 Front Street North 3 _ Quilcene,WA 98376 Issaquah,WA 98027 (J) 4 Office:(425)557-3774 FAX:(425)557-3760 IT IS THE RESPONSIBILITY OF THE GENERAL CONTRACTOR TO MAINTAIN EROSION CONTROL MEASURES IN PROPER WORKING CONDITION TO INSURE THAT NO SEDIMENT IS LEAVING THE SITE. N 90%d00'00" W 152.20' - _ - _ _ ___ __� __ __ _ — -_ -= 3 --------------- -� M LO 1.10 _-_______— ___-__ _—___-__-- __� AC. SEASONAL STREAM AT BOTTOM OF RAVINE _ _—_ _ S 89%d59'58" W Yla TC 5LOPE TO NATER ------ - LINE- - - _ -- m _ -------- - Q__-_ ��____--_—__—_- - _—__ -=______ _---___---__ =-_— a _- SLUMP �3 Ic_ LOT B AREA 3r Q - - =_- ___ _ co _-_ 1.13 AC. _____-� SE B K 2 -- -- - ---_ ------ -- = I -' O TOP OF BLUFF 1© _J 1 -___—— _ - - - -- =__ - ------__-— 1.1 N 90%d00'00" W 142.BUILDING 332.57' ENVELOPE i 5' BUILDING SETBACK LINE 100 GALLON PROPANE TANK MIN 5' FROM HOUSE r 10.12' 314.78' ; 162.58' TOP OF SLOPE (TYP.) r r yr L $ 7B%d5$'10" . 63.09' SANITARY SEWER � r � r BUILDING ENVELOPE 9 n O N Fi 410 �7� 1 .12' r h� L y^. r r e° OF SLOPE ; y ! (TYP.) 1 W i h ; W N \ 20' BUILDING n I 0 o ' co SETBACK LINE I ; ae ZOD r O' STEPS KERY Z WATER STUB ; C r I ., 1.4 -� EPTIC STUB r 4 l DRIVEWAY co in 9.88' 150.00, S ss ods7 77'F s S7l °aSB, O °a h* � S s'�% w� •8O' ss3 o s °asi• � l'" ;�o�a C31 w�D y 20' WIDE UTILITY S 90%d00'00" E 196.99' o �\ V 4 o e o c " O N � m s L26 WELL HOUSE N J WELL cm N J \ s jra07• 7 c LOT C 1.55 AC. DRAINFIELD EASEMENT L42 FOR LOT "B" ; ; S 71 O' WIDE UTILITY EASEMENT EXISTING DRAINFIELD- - I S 0 0 o Ij S 90%d00'00"----- ' S ROCKERY AT r - PROP. LINE 10.12' 1000 GAL. SEPTIC I TANK 8 PUMP TANK 7 , 10.12 V POWER METER- 200 AMP J W WATER • IN BASEMENT r S SEPTIC POWER POLE CENTERLINE OF E. QUILCENE ROAD HOUSE TO TANK FROM FNPN TO 1PRAINFIELP 2411'-0" HOUSE TO START OF DRAINFIELD 346-O" HOUSE TO END OF DRAINFIELD FROM FNON TO RESERVE SITE PLAN 1 11 - 40'-p�� PARCEL NUMBER: 0701311021 71l� " Wltfw 5rA31erl�ti�c� R fYtt�cNFr WAt-1 -5`' STo1�MWAc � ':3 tj �►.rU Aft amp 3Y �w�tr-t �,�� btJ 2- AT- 5i-0 - 379 - *4c- cz _ AvvrtotJAI- Rt; L_t7tv_v'_ Cckjpm BL1tL_�IlJ�- �LF}tiJ jet-fl-lL.S �OIZ. -rk"E5� �'-k- As �ult�p i3y ��M �C'ZtP �•��C-t-f-N(C�j-(� R�JIst:J p 2-2�--C�j ► ,::3qE_ma7- AFf'2n vr=L� Cm tJT'2oLs , so F 17.1' s 63,y3, 1i7°op, <7q 7 g qq" F fy� OS 10, EXISTING RESERVE AREA S 90%d00'00" E R=100.00' N0 N 79%d1447., W 69.3q. DRAINFIELD EASEMENT FOR LOT "A" io row LOT D Ne a ° o� M o y mIq J Lo "O' 0 6744100 o _ �L J — Stormwater BMP's Required G'L-- APPROVED SITE PLAN MAY 2 8 2009 JEFFE SON CO DEPT. OF CO iFY O SIGNATURE: it 3.06 AC 673.44 681.00 .so 251.03' LINE TABLE LINE DIRECTION DISTANCE L1 S 32%d45'29" E 24.81' L2 N 79%d32'28" W 48.42' L3 N 69%d04'69" W 49.70' . L4 N 48%d27'03" W 49.80, L5 S 26%d23'08" E 24.44' LB S 11%d33'55" W 27.76' L7 N 88%d56'67" W 60.39' L8 S 23%d24'47" E 26.66' L9 S 47%d09'08" E 44.28' L10 S 67%d4552" E 45.28' L11 S 48%d68'07" E 16.75' nb0 269.22' - - - - - - - - g0 \-- 60.73' e h o e O .1 EROSION CONTROL - SEE DETAILS SHEET A1.2 a 0 M PRIOR TO ANY CLEARING OR GRADING, SILT FENCING SHALL BE INSTALLED DOWN 1.1 SLOPE OF ALL AREAS 10 BE DISTURBED PER SECTION DETAIL SHEET A1.2. PRIOR TO ANY DELIVERY OF MATERIALS OR CONSTRUCTION OF ANY KIND, A 1.3 STABILIZED CONSTRUCTION ENTRANCE SHALL BE INSTALLED, THE ENTRANCE SHALL BE A MINIMUM TWENTY-FIVE FEET DEEP BY TEN FEET WIDE IN AREA, WITH FOUR TO EIGHT INCH QUARRY SPALLS ONE FOOT DEEP PER DETAIL SHEET A1.2. TEMPORARY AND PERMANENT COVER MEASURES SHALL BE PROVIDED TO 1.4 PROTECT DISTURBED AREAS. TEMPORARY COVER SHALL BE INSTALLED IF A DISTURBED AREA IS TO REMAIN UNWORKED FOR MORE THAN SEVEN DAYS DURING THE DRY SEASON (MAY 1 TO SEPTEMBER 30) OR FOR MORE THAN TWO DAYS DURING THE WET SEASON (OCTOBER 1 TO APRIL 30). DURING THE WET SEASON, SLOPES AND STOCKPILES 3H:1 V OR STEEPER, AND WITH MORE THAN TEN FEET OF VERTICAL RELIEF SHALL BE COVERED IF THEY ARE TO REMAIN UNWORKED OMORE THAN 12 HOURS. COVER METHODS EROSION CONTROLNE S AND BLANKETS, COVERING WITH SANDBAG WEIGHTING, SEEDING, AND SODDING. DRAINAGE - SEE DETAIL 1 / A1.2 OFOUNDTION DRAINTILE TO BE 4" RIGID PVC PIPE- PERFORATED. ALL JOINTS TO BE 1 O GLUED, USE FITTINGS AS REQUIRED. FOOTING DRAINS TO BE INSTALLED AT BOTTOM OF FOOTINGS, AND TO BE GREDED TOWARDS OUT -FALL. (GRADE BY HAND - AVOID UNDERCUTTING FOUNDATION FOOTINGS.) LAY FILTER FABRIC BELOW DRAINTILE, COVER DRAINTILE WITH MIN 12" OF 1-1/2" WASH ROCK. WRAP FILTER FABRIC UP SIDES AND INSTALL ANOTHER LAYER OF FILTER FABRIC OVER THE TOP, TUCK AND WEIGHT SO BACKFILL DOES NOT PENETRATE FABRIC. DOWNSPOUT DRAINS: LAYOUT LOCATIONS FOR BEST ROOF DRAINAGE AND FOR 11 BEST APPEARENCE - CONSULT WITH HOME OWNER. DOWN SPOUTS TO TERMINATE IN 2X3 TO 4" PVC PIPE FITTING AT START OF UNDERGROUND SYSTEM. DRAINTILE TO BE 4" RIGID PVC PIPE. ALL JOINTS NGS AS REQUIRED. GRADE PIPES TO SLOPE TOWARDSO OUT ALLBE LPIPES TO B UED, USE IMIINIM M 12" BELOW GRADE. DO NOT JOIN DOWNSPOUT AND FOOTING DRAINS TOGETHER UNTIL POSITIVE DRAINAGE IS ACHIEVED TO AVOID BACK -FLOW INTO FOOTING DRAINS. FOR ROOFS WITH EXPECTED HEAVY LEAF DROP OR FOR ANY DECK DRAIN, INSTALL 12"X12"X12" ABS DRAIN BOX WITH GRATE CONNECTED TO DRAIN TILE AS ABOVE, CUT HOLE FOR SPOUT INTO DRAIN BOX GRILL. DRAIN BOX CAN THEN BE MUCKED OUT BY THE OWNER TO PREVENT CLOGGING. ::- LOT GOVERAGF. 4 IMPERI/IOU5 SURFACE � 1. 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