HomeMy WebLinkAboutBLD2010-00229 THIS BUILDING IS NOT
FINAL ED .
PERMIT WAS CANCELLED
PRIOR TO RECEIVING ALL
INSPECTIONS AND HAS NOT
BEEN ISSUED A CERTIFICATE
OF OCCUPANCY .
Ordinance No. 12-1203-12.
"Pursuant to this Ordinance, effective January 1, 2013, if your permit is less than five years old, additional renewals may
be approved at the current annual renewal rate. If your permit is older than five years from the date of issuance, in order
to be considered for an extension, you must submit a request in writing to the building official and must provide a
justifiable cause for an extension. Payment of all accrued renewal fees is required prior to approval of an extension."
R105.5 Expiration.
Every permit issued shall become invalid unless the work authorized by such permit is commenced within 180
days after its issuance, or if the work authorized by such permit is suspended or abandoned for a period of 180
days after the time the work is commenced. The building official is authorized to grant, in writing, one or more
extensions of time, for periods not more than 180 days each. The extension shall be requested in writing and
justifiable cause demonstrated.
R105.6 Suspension or revocation.
The building official is authorized to suspend or revoke a permit issued under the provisions of this code
wherever the permit is issued in error or on the basis of incorrect, inaccurate or incomplete information, or in
violation of any ordinance or regulation or any of the provisions of this code.
Jefferson County Building Sision Permit NAV: BLD10-00229
Applicant: GAZINTA LLC TRUSTEE
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 Minimum setback from Pleasant Harbor Road edge of the asphalt
driving surface shall be 10 feet or 8 feet from gravel shoulder.
Minimum setback from SR 101 shall be 50 feet. Minimum side yard
setbacks shall be 5 feet. Minimum setback from top of shoreline bank
shall be 30 feet.
Erosion Control SEE CONDITIONS 1 &2
Foundation Footing
Footing Drains
Foundation Stem Wall
Underground Plumbing
Under Floor Framing
Straps(hold downs)
Ext. Shear Wall Nailing
Rough-in Plumbing
Framing
Blocking
Airseal
Insulation:Walls
Insulation: Floors
Insulation: Ceiling
Int. Shear Wall Nailing
Wallboard Nailing
Gas Line: Interior
Gas Line: Exterior
Propane Tank
Heat/Chimney Clearance
Drywell/Alt Drainage REQUIRES STORM WATER CERTIFICATION
Address Posted
. l -YZ-01 ;o
FINAL INSPECTION
FINAL INSPECTION MUST BE APPROVED PRIOR TO BUILDING BEING OCCUPIED
THIS PERMIT IS VALID FOR ONE YEAR
BUILDING PERMIT APPLI ION MLA10-00176Review Type:
Jefferson County Department of Community Development
621 Sheridan Street Port Townsend, WA 98368
PERMIT #: BLD10-00229 Received Date: 6/28/2010
SITE ADDRESS: 2j2 PLEASANT HARBOR RD
BRINNON, 98320
OWNER: GAZINTA LLC TRUSTEE PHONE: 360-796-9914
C GREEN TRUST
PO BOX 749
BRINNON WA 98320-0749
SUBDIVISION: Block: Lot: T 79+
PARCEL NUMBER: 502104052 Section: 10 Township: 25 N Range: 02 W
CONTRACTOR: OWNER/BUILDER PHONE:
REPRESENTATIVE: PHONE:
PROJECT DESCRIPTIOP NEW ADU
TYPE OF WORK RES SQUARE FOOTAGE:
TYPE OF IMP ADU MAIN: 1,029
VALUATION 18,500.00 ADD'L: HEAT TYPE: EEE
CODE EDITION: 2006 HEAT BASE: HEAT TYPE:
OCCUPANCY: R-3 UNHEATED: # OF STORIES:
OCCUPANCY: OTHER:
CONST TYPE: 5N SHORELINE:
GARAGE: 940
CONST TYPE: SETBACK:
DECK: 156
BANK HEIGHT:
SEWAGE DISPOSAL: ALT
WATER SYSTEM: PWELL
BEDROOMS: BATHROOMS:
Exist: 0 Exist: 0
Prop: 1 Prop: 1
Total: 1 _ Total: 1
Routing Date:
Type Amount-Paid By:-- e: Receipt: Approved/Date
Yp Permit $1,100.15 LYK 06/28/10 117912 APPROVED
Plan Check $715.10 LYK 06/28/10 117912
State Building Code $4.50 LYK 06/28/10 117912 NOV I 2010
Total: $1,819.75 Jefferson County Planning
& Building Department
• •
CONDITIONS for Building Permit# :BLD10-00229
1.) PRIOR TO FINAL BUILDING OCCUPANCY, PROPONENT SHALL SUBMIT A WRITTEN
LETTER FROM MICHAEL J. ANDERSON, P.E. STATING THAT THE STORMWATER
FACILITY HAS BEEN CONSTRUCTED IN ACCORDANCE WITH THE REQUIREMENTS
OF THE "STORMWATER REPORT" DATED JUNE 28, 2010 AS SIGNED BY MICHAEL
J. ANDERSON, P.E.
2.) A SILT FENCE SHALL BE INSTALLED A MINIMUM OF 30 FEET LANDWARD OF THE
LANDSLIDE HAZARD AREA BUFFER PRIOR TO ANY LAND DISTURBING ACTIVITY.
APPLICANT/CONTRACTOR SHALL BE RESPONSIBLE TO MAKE SURE THAT SILT
DOES NOT FLOW OFF SITE OR OVER THE SHORELINE BANK.
THE MINIMUM HEIGHT OF THE TOP OF SILT FENCE SHALL BE 2 FEET AND THE
MAXIMUM HEIGHT SHALL BE 2 1/2 FEET ABOVE THE ORIGINAL GROUND
SURFACE.
THE SILT FENCE SHALL BE BURIED IN A TRENCH TO A MINIMUM DEPTH OF 5
INCHES BELOW THE GROUND SURFACE. THE TRENCH SHALL BE BACKFILLED
AND THE SOIL TAMPED IN PLACE OVER THE BURIED PORTION OF THE SILT
FENCE, SUCH THAT NO FLOW CAN PASS BENEATH THE FENCE AND SCOURING
CAN NOT OCCUR.
ANY DAMAGE TO THE SILT FENCE SHALL BE REPAIRED IMMEDIATELY.
SEDIMENT DEPOSITS SHALL EITHER BE REMOVED WHEN THE DEPOSIT
REACHES APPROXIMATELY ONE-THIRD THE HEIGHT OF THE SILT FENCE, OR A
SECOND SILT FENCE SHALL BE INSTALLED.
3.) CONSTRUCTION ENTRANCES SHALL BE STABILIZED WHEREVER TRAFFIC WILL
BE LEAVING A CONSTRUCTION SITE AND TRAVELING ON PAVED ROADS OR
OTHER PAVED AREAS WITHIN 1,000 FEET OF THE SITE.
THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM COMPACTED SUBGRADE.
QUARRY SPALLS (OR HOG FUEL) SHALL BE ADDED IF THE PAD IS NO LONGER IN
ACCORDANCE WITH THE SPECIFICATIONS. (BMP C105, 2005 DOE STORMWATER
MANUAL).
ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED BY
SHOVELING OR STREET SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING
SHALL BE REMOVED OR STABILIZED ON STIE.
ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD, WHICH END UP ON
THE ROADWAY SHALL BE REMOVED IMMEDIATELY.
UPON PROJECT COMPLETION AND SITE STABILIZATION, ALL CONSTRUCTION
ACCESSES INTENDED AS PERMANENT ACCESS FOR MAINTENANCE SHALL BE
PERMANENTLY STABILIZED.
4.) Evidence suggests that the bluff area related to the parcel in question is subject to erosion
and mass wasting. Vigilant maintenance of the stormwater runoff tightline to the beach is
important to avoid a negative contribution to bluff instability.
5.) The stormwater tightline shall dissapate above the Ordinary High Water Mark (OHWM) or
SEPA review is required by Jefferson County.
6.) Stormwater runoff tightline piping can be subject to weakening through ultraviolet radiation
exposure and mechanical damage due to trees, rocks and debris. A more durable
material for the tightline will provide greater defense against the elements.
7.) The applicant/owner and all fut wners are responsible for maintaining angpotecting
the stormwater runoff tightline to a beach against damage due to normal we weather
exposure, and/or trees, rocks and debris. If and when damage occurs to the tightline that
renders it ineffective, the responsible party must execute the necessary repairs as soon
as possible and no longer than 30 days.
8.) The stormwater runoff tightline piping must be composed of durable material that is
resistant to weakening and damage due to time, weather exposure (including ultraviolet
radiation), and impacts from trees, rocks and debris. The corrugated plastic material used
for tightline construction in the past is no longer acceptable. More durable plastic or
ultraviolet radiation-resistant flexible rubber material shall be required.
9.) The stormwater runoff tightline shall be designed and placed in order to minimize visual
impacts to users of the beach and nearby waters.
10.) Maintaining ground cover will help reduce erosion from surface runoff. Any bare areas
that develop should be revegetated. Native low growing vegetation that requires little or
no irrigation would be the most beneficial
11.) Tree limbs, lawn clippings, etc. should not be thrown over the bluff because these piles
have a tendency to damage/kill the underlying vegetation which in turn increases the
erosion potential of the bluff soils. These piles also add unnecessary weight to the bluff
soils, especially when saturated with water.
12.) Silt fences or other sediment control devices may be needed during construction such that
sedimentation off site does not significantly exceed predevelopment conditions. Standard
erosion control best management practices (BMP's) should be utilized as necessary to
prevent erosion and off-site runoff. Temporary stabilization might include silt fences
and/or hay bails or straw waddles staked with rebar. Permanent stabilization might
include replanting, mulching or gravel.
13.) Final approval from public works on road crossing permit UTL10-20 is required prior to
building final.
14.) Residential developers and individual builders shall be required to preserve shoreline
vegetation and reduce the associated risk of erosion during construction and any future
activity which may impact the stability of the shoreline.
15.) 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.
16.) 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.
17.) VOLUNTARY MEASURES OF •STAL &AT RISK SIPZ: •
1. Installation of a flow meter.
2. On-going well monitoring for chloride concentration.
3. Submittal of monitoring data to County.
18.) 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.
19.) The property owner shall comply with Water Conservation Measures (per list maintained
by the UDC Administrator).
20.) A vegetative buffer of 30-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.
21.) A Geotechnical Report was submitted in conjunction with the SPAAD (ZON07-00049)
application. The report addressed the stability of the geologic hazard area. A building
setback of 30-feet shall be measured perpendicularly from the top or toe of the geologic
hazard to the proposed single family residential development including septic system
drainfields.
22.) Landslide Hazard Areas and their associated buffers shall remain naturally vegetated.
Should buffer disturbance occur during construction, the Unified Development Code
(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.
23.) 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."
24.) All construction activities shall not encroach upon the Landslide Hazard Vegetative buffer.
This includes the storage or preparation of materials.
25.) 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.
26.) 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.
27.) A Stormwater Report(prepared by Michael J. Anderson, P.E.) 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 Jefferson County Department of Community Development to arrange a
schedule to inspect the property for plan compliance. A Certificate of Occupancy will not
be issued until the Department verifies 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.
28.) Outdoor residential storage shall be maintained in an orderly manner and shall create no
fire, safety, health or sanitary hazard.
• •
29.) 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.
30.) This parcel is within the Brinnon-Black Point no shooting area per JCC 8.50.
31.) A minimum of two (2) on-site parking spaces shall be provided for the single family
residence.
32.) The road approach permit(RAP10-00051) must be inspected and finaled by the Jefferson
County Department of Public Works prior to the final inspection/certificate of occupancy of
this residence. Contact Terry Duff, Department of Public Works at 360-385-9159 for the
final road approach inspection.
33.) Maximum lot coverage is not to exceed 25%. Lot coverage is defined as amount of
impervious surface which includes roof tops, driveways, concrete, etc.
34.) The building height is not to exceed 35 feet.
35.) Minimum setback from Pleasant Harbor Road edge of the asphalt driving surface shall be
10 feet or 8 feet from gravel shoulder. Minimum setback from SR 101 shall be 50 feet.
Minimum side yard setbacks shall be 5 feet. Minimum setback from top of shoreline bank
shall be 30 feet.
36.) Exterior lighting for residential uses shall not exceed twenty feet (20') in height from the
finished grade, excepting when such lighting is an integral part of a building or structure.
Ground level lighting is encouraged.
37.) 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.
38.) Applicant shall acknowledge that the septic permit design (SEP10-0030) has decreased
the SPAAD approved buildable area located on the west side of Pleasant Harbor Road
where the primary and reserve drainfield areas are now proposed as a part of this septic
permit.
39.) Applicant and/or installer shall comply with all conditions as set forth in the approved
septic permit(SEP10-00030).
C. GREEN TRUST
o�� JEFFER COUNTY • PARCEL NO. 502104052
ti - ar \s *4 DEPART OF •COMMUNITY DEVELOPMENT 211 PLEASANT HARBOR RD,
621 Sheridan Street • Port Townsend • Washington 98368 BRINNON WA 98320
360/379-4450 • 360/379-4451 Fax MBP-ADU
41S 5' www.co.jefferson.wa.us/commdevelopment
, N(
Master Permit Application MLA: I 0 _ r ico
Project Description(include separate sheets as necessary):
Construct ADU
Tax Parcel Property
Number: 502104052 Size: 2.13 acres (acres/square feet)
Site Address and/or Directions to Property:211 Pleasant Harbor Rd, Brinnon, WA 98320 - South Highway 101
to Pleasant Harbor Rd, Turn left, turn right at T.
Property Owner(s)of Record:C. Green Trust, Gazinta LLC, Trustee
Telephone:360-796-9914 Fax: email:jksailing@gmail.com
Mailing Address: P 0 Box 749, Brinnon, WA 98320
Applicant/Agent(if different from owner): K. Brace, manager Gazinta LLC
Telephone:360-796-9914 Fax:
P 0 Box 749, Brinnon email:Jksailing@gmail.com
Mailing Address: , WA 98320
What kind of Permit?(Check each box that applies
V Building ,LOl�N Variance(Minor, Major or Reasonable Economic Use)
❑ Demolition Permit 0 Conditional Use[C(a), C(d), or C]**CI
Single Family arage OZINMetached 0 Discretionary"D"or Unnamed Use Classification
❑ Manufactured Home Modular ❑Special Use(Essential Public Facilities)**
❑ Commercial* 0 Boundary Line Adjustment
❑ Change of Use 0 Short Plat**
0 Address 0 Road Approach 0 Binding Site Plan**
❑ Home Business 0 Cottagelndustry 0 Long Plat** L I U i`i L i0 LJ ti
❑ Propane 0 Planned Rural Residential Development(PRRD)/Amendments**
❑Sign 0 Plat Vacation/Alteration**
❑Allowed"Yes"Use Consistency Analysis ❑ Shoreline Master Program Exemption/Permit Revisions**
❑ Stormwater Management 0 Shoreline Management Substantial Development**
❑ Site Plan Approval Advance Determination(SPAAD)* 0 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 ent will assumed unless the applicant informs the County in writing at the
time of the appli ki that he ;he wa prior notice. £ 1ZI, �, c,_._ Date: 6 d a^�
0-
The action or actions Applican will un.-rtake 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 i you are in compliance with the Jefferson County development code.The Applicant acknowledges that he,she or it holds individual
and non-tran .. -spo �*I a hering to and complying with the ESA. The Applicant has read this disc) imer nd Sig nd dates it below.
Sig natured
7:\Documents and Settings\caral\Local Settings\Temporary Internet Files\OLK86\Master Permit Application 12-19-2006t.dDate:l /�oc Z6
• BUILDER STATEMENT
The sip 2r of this statement does hereby certify that they are the Owners of the parcel referenced herein,thaf"they are not licensed contractors and that
they will be assuming the re onsibility of the General CorJo�,r ,�proppposed project. jd
Signatur —^-_.-. l��' /rf vl/�wz� fi/� ' e: //.Ql
GENERAL CONTRACTOR R MANUFACTURED HOME INSTALLER: PHONE: FAX:
( ) ( )
MAILING ADDRESS: EMAIL:
CONTRACTOR'S LICENSE WAINS
NUMBER: NUMBER
ARCHITECT/ENGINEER: PHONE ( ) FAX:( )
MAILING ADDRESS: EMAIL
pr pe: Fra Bathrooms: Shoreline: Type of Sewage Disposal:
Wood Existing: Sewer
ddition Steel Proposed: / Bank Community System
Total: " -` Individual Syste
Alteration/Remodel Concrete ___/___ r.
Repair Masonry '71 — SEP Permit#
Demolition Other: Bedrooms: diuWater„......
Existing: Setback: Two Party
Type of Het: Proposed: __/____ / Public
ide/j eV !// �Total: _ - i Name of System:
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:
0 Underground Tank °Above ground Tank Size of Propane Tank:
❑Heat Stove ❑Cook Stove 0 Woodstove 0 Fireplace Insert 0 Hot Water Tank 0 Pellet Stove ❑Other
Is this appliance being installed in a Manufactured/Mobile Home? Yes No ���l�I �n !�
When applying for a permit to install a propane tank you must also sub to site plan showing all of the�iu1Ydings,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 Amount Revision
Main Floor Heated 1029 EH Bld App Review:
uq sE-e.
2nd Floor Heated 0 Consistency Review: 1 E
Other Heated 00 Base fee: I I
Mezzanine Additional Section: I
Heated Basement Plan Check fee: (7 15- ID
Unheated Basement State Surcharge fee: 6
Other Unheated Pot Water Review fee:
Garage/Carport under 940 2LI SUBTOTAL 1 Sri 13
Decks 156 C 3 O(",911/Rd Approach
Other TOTAL: $, S32 .15
Receipt Number: i r',(1 1
1029 • Cash/Check Number t��._�
16Z `I
ESTIMATED COST(REQUIRED)-----------,-,_ Date: ��ZS��
.Fair market value of a Uabor and materials foundation finish �7
,. Initials:
C:\Documents and Settings\caral\Local Settings\Temporary Internet Files\OLK86\Master Permit Application 12-19-2006.doc
. •
STORMWATER REPORT
GAZINTA LLC TRUSTEE
RESIDENCE
PROJECT LOCATION
The project is located adjacent to Pleasant Harbor at # 211 Pleasant Harbor Road
and is also known as APN 502 104 052 located in Section 10, T25N, R2W, W.M.
The site is characterized with a rural setting in a predominately single residential
neighborhood. The project consists of a new single family residence and an ADU on
a single site bounded on the west by U.S Highway 101.
This stormwater management plan will examine the hydrology and changes to the
stormwater runoff due to the proposed construction of the residence, the ADU and
the driveway construction. All proposed drainage improvements shall be consistent
with the design standards of Jefferson County and the "Stormwater Management
Manual for Western Washington" 2005 (DOE SMM).
PRE-DEVELOPMENT SITE CONDITIONS
The project site currently is un-developed except for a gravel driveway connecting
to Pleasant Harbor Road to serve a small site that is a seasonal recreation retreat.
The lot is presently un-improved and the ground cover consists of native grasses
and brush. Utilizing the "USDA Soil Conservation Service — Jefferson County
Area" as a resource, the soil is characterized as Hoodsport (HoD) and described as a
very gravelly sandy loam. The topography as shown on the site plan has been
drawn utilizing the data from the Jefferson County website and shows the typical
land formation which slopes towards the top of the bluff adjacent to Puget Sound.
DOWNSTREAM ANALYSIS
The downstream storm drain system consists of the Puget Sound and represents a
receiving body as defined by typical drainage basin topographic features. The
requirement of an analysis of a quarter of mile downstream is not applicable to this
site.
Page 2 of 7
• •
PROPOSED SITE DEVELOPMENT
The private property site is to be developed with a new residence and ADU under
separate permits. The impervious areas have been calculated and are summarized as
follows:
Site development area 92651 sft ..... 2.13 Ac.
Proposed residence 1716 sft .... 0.039 Ac.
Proposed ADU 1030 sft .... 0.024 Ac.
Proposed driveways.....
Residence... 1426 sft
ADU .... 1250 sft
Subtotal 2676 sft ..... 0.061 Ac.
Roof areas:
Residence 2137 sft
ADU 1190 sft
Subtotal 3327 sft ..... 0.0764 Ac.
Total Impervious 6003 sft ..... 0.134 Ac.
Total Impervious Percentage 6.8 %
In response to the site conditions noted on the Jefferson County website, a
geotechnical report was prepared by NTI Engineering & Surveying company by
Mr. Bill Payton, L.E.G, dated October 10, 2007. In the report, reference is made to
the drainage of the site and the suggested disposal of off-site drainage to the edge of
the bay. The proposed stormwater improvements will direct the flow away from the
new residential construction toward the natural flow pattern crossing the property.
PROPOSED STORMWATER IMPROVEMENTS
The primary goal of the State DOE Stormwater Manual for Western Washington is
to protect the streams of the State and the Puget Sound. To comply with that goal,
the Manual prescribes the treatment of runoff and the infiltration of the treated
runoff into the soil to refurbish the ground water that the impervious areas have
detracted. It is anticipated that the surface flow along the landscaped grassy areas
adjacent to the new residence and the sheet flow from the ADU construction will
provide the necessary treatment prior to the flow connecting to the existing natural
swales crossing the property.
The run-off from the new driveway construction will be captured by a pervious
Page 3 of 7
• •
pavement area at the low point of the driveways and infiltrated into the top soil.
Attu. tied are calculations that indicate an area combined for 400 square feet will be
sufficient. An area of 200 square feet is being provided at the end of the driveways
to capture the runoff from the driveways at each location.
In addition to the pervious pavement areas, the roof water from the residence will be
directed to the runoff swale that crosses the property. The additional flow is minor
comparison to the runoff from the property to the west and will not unduly affect
the flow and its connection to the Hood Canal.
A culvert will be provided for the ADU driveway so that the roadway ditch in
Pleasant Harbor Road will continue to flow the runoff swale shown. The culvert that
crosses Pleasant Harbor Road will be extended beyond the new driveway to the
main residence within the bed of the existing natural swale.
PROPOSED STORMWATER FACILITIES
The proposed culvert crossing the new driveway is the primary new stormwater
facility for the project.
HYDROLOGICAL ANALYSIS
The gravel sub-base for the pervious pavement was verified in accordance with the
WWHM3 computer system that is prescribed by the State DOE. Please see attached
calculation report.
EROSION AND SEDIMENTATION IMPACTS
The State 2005 DOE Manual specifies that each stormwater plan shall provide for
the following elements:
SECTION 2.5. 1 MINIMUM REQUIREMENT #1 : PREPARATION OF STORMWATER
SITE PLAN
Please see attached site plan entitled "DRAINAGE SITE PLAN"
dated June 25, 2010 .
SECTION 2.5.2 MINIMUM REQUIREMENT #2 : CONSTRUCTION STORMWATER
POLLUTION PREVENTION (SWPP)
All new development and redevelopment shall comply with
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Construction SWPP Elements #1 through #12 below:
Element 1: Mark Clearing Limits
The clearing limits will be the minimum required to
construct the on-site driveway that provides access to the
proposed residence and ADU.
Element 2: Establish Construction Access
A construction access will be established at each new
driveway location at the existing gravel road at Pleasant
Harbor Road. The installation of quarry spalls to minimize
tracking sediments will be utilized as shown per the detail
shown on Sheet 2 of the plans.
Element 3: Control Flow Rates
The storm water will be draining directly to a "receiving
body" consisting of a bay of the Puget Sound and the flow
rate is not a problem.
Element 4: Install Sediment Controls
A silt fence will be set in place along the perimeter of the
new construction along the downstream edge of the work prior
to the start of any construction to prevent siltation.
Element 5: Stabilize Soils
At the completion of the site grading for the building pads
and subgrade for the paving areas, the areas disturbed by
the new construction will be seeded and maintained during
the remainder of the construction period. Upon completion
of the driveway and single family residential construction,
the final landscaping of the site will be installed to
stabilize the soils .
As required by the SMM, from October 1 through April 30, no
soils shall remain exposed and unworked for more than 2
days . From May 1 to September 30, no soils shall remain
exposed and unworked for more than 7 days . The soils will
be temporary seeded or protected with plastic covering.
Element 6: Protect Slopes
All slope areas will be made at a maximum slope of 3 : 1 and
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protected with hay and plastic coverings as required.
rmanent landscaping will be installed at completion of
L:unstruction.
Element 7: Protect Drain Inlets
n , new catch basin will be protected with hay bales during
construction in accordance with the detail on Sheet 2 .
Element 8: Stabilize Channels and Outlets
The site drainage does not affect any channels or outlets .
Element 9: Control Pollutants
As required by the SMM, all pollutants, including waste
materials and demolition debris that occur on-site during
construction shall be handled and disposed of in a manner
that does not cause contamination of storm water.
Maintenance and repair of heavy equipment and vehicles
involving oil changes and other maintenance work shall be
conducted using spill prevention measures such as drip pans.
Wheel wash or tire bath wastewater shall be discharged to a
separate on-site treatment system.
Element 10: Control De-watering
No de-watering is anticipated with this project .
Element 11: Maintain BAPS
All temporary and permanent erosion and sediment control
BMPs shall be maintained and repaired as needed to assure
continued performance of their intended function. All
maintenance and repair shall be conducted in accordance with
the Jefferson County Stormwater Standards and the
requirements of the State SMM.
Sediment control BMPs shall be inspected weekly or after a
runoff-producing storm event during the dry season and daily
during the wet season.
All temporary erosion and sediment control BMPs shall be
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411 .
removed within 30 days after final site stabilization is
achieved or after temporary BMPs are no longer needed.
Trapped sediment shall be removed or stabilized on site.
Disturbed soil areas resulting from removal of BMPs or
vegetation shall be permanently stabilized.
Element 12: Manage the Project
All aspects of this Stormwater Control Plan and the
Construction Stormwater Pollution Prevention Plan will be in
place in accordance with the sequencing of the work and will
be properly maintained by the contractor during construction
and by the property owner upon completion and occupancy of
the residence.
SUMMARY
In summary, the stormwater requirements are as shown on the attached copy of the
Engineered Site plan illustrate the stormwater facilities proposed for the project that
comply with the State DOE and Jefferson County requirements.
TEMPORARY EROSION AND SEDIMENT CONTROL
Temporary silt fences will be placed along the site as shown to provide erosion
control during construction. Landscaping of all exposed soil will be completed as
soon as possible to prevent any offsite soil deposition.
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