Loading...
HomeMy WebLinkAboutZON2017-00017 permit and site planC ot%l JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT UNIFIED DEVELOPMENT CODE ,, INC' ' TYPE I LAND USE PERMIT APPLICANT: ERIK J OSWALD PAMELA S OSWALD 191 WINDROSE DR PORT LUDLOW WA 98365-9552 DATE ISSUED: March 22, 2018 DATE EXPIRES: March 22, 2019 MLA NUMBER: MLA17-00038 PROJECT PLANNER: Emma Bolin PROJECT DESCRIPTION: ZON17--00017 - Stormwater Management to install Residential Driveway (easement for driveway crosses several lots) PROJECT LOCATION: 1279 Ludlow Bay Rd, Port Ludlow, WA 98365; APN 824-152-004, 821-152-005, 821-152-006, 821-152-007 CONDITIONS: 1.) The well is directly adjacent to a 60' easement and may be negatively impacted by vehicle traffic. The well shall be protected with substantial barriers to prevent damage to the well casing resulting from vehicular/traffic impact. 2.) A Marine Nearshore Habitat (Fish and Wildlife Habitat Conservation Area) has been identified on the subject property. The FWHCA will require a buffer of 150 -feet. The buffer shall be measured horizontally from the Ordinary High Water Mark (OHWM). Fish and Wildlife Habitat Conservation Areas shall also have Building Setbacks established. 3.) A Geotechnical Report by Stratum Group dated November 15, 2017 was submitted in conjunction with this application. The report addressed the stability of the geologic hazard area. A vegetative buffer of 50 feet shall be measured perpendicularly from the top of the geologic hazard, located at the steep shoreline slope at the north corner of the site, to the proposed development. a. Finding: The nearest portion of the proposal is located 190 feet back from the shoreline and 160 feet back from the shoreline slope on the north portion of the site; therefore, the proposal is located outside of both the FWHCA buffer and the geohazard buffer. 4.) All construction activities shall not encroach upon the 150 -foot FHWCA buffer or the 50 -foot geohazard buffer. This includes the storage or preparation of materials. Vegetation removal or disturbance in the shoreline buffer shall require separate review. 5.) No debris or yard waste shall be placed on the steep slopes of the property. Yard waste eventually builds up and can form a wet unstable mass that will slide down the slope damaging the slope and increasing the likelihood of a slope failure and erosion. 6.) No water lines shall be buried on the steep shoreline slope and shutoff valves should be located at least 30 feet from the top of the steep slope. 7.) A "Stormwater Site Plan, dated May 4, 2017 fulfilling the requirements of a Stormwater Pollution Prevention Plan (SWPPP) and Stormwater Management Plan has been submitted and approved by the Department of Community Development. The applicant shall fully implement the provisions of the submitted plan. 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. 8.) 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. 9.) The limits of clearing shall be clearly marked on the property. Plastic, metal, or stake wire fencing shall be installed as shown on the approved site plan prior to beginning any ground -disturbing activities, and shall be installed to comply with specifications in the 2012 Stormwater Management Manual for Western Washington (BMP C103). 10.) 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 Page 3 of 3 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. 11.) 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. FINDINGS: 1.) The Administrator finds that this application complies with applicable provisions of the Unified Development Code, all other applicable ordinances and regulations, and is consistent with the Jefferson County Comprehensive Plan and Land Use map. 2.) The application was reviewed by the Jefferson County Department of Community Development staff on September 14, 2017 for the potential presence of Environmentally Sensitive Areas (ESAs) under the provisions of the Unified Development Code (UDC). After an initial Geographic Information Systems mapping review and an investigative site inspection, the following ESAs were confirmed to be present on the subject property: unstable shoreline slope stability, slight and moderate landslide hazard area, FEMA Special Flood Hazard Area - 100- year floodplain, erosion hazard area, nearshore marine habitat (Fish and Wildlife Habitat Conservation Area), susceptible aquifer recharge area, coastal seawater intrusion protection zone. 3.) Jefferson County determined that this proposal is categorically exempt from review under the State Environmental Policy Act (SEPA) pursuant to WAC 197-11-800(1)(b)(i) and (v) and JCC 18.30.060(5). 4.) Aquifer Recharge Areas in Jefferson County are characterized by porous geological formations that allow percolation of the surface water into the soils and the underlying zone of saturation. Aquifers are geologic formations that contain sufficient saturated permeable material to yield significant quantities of water to wells and springs. Aquifers serve as the source of drinking water within most of the rural portions of Jefferson County. 5.) Susceptible Aquifer Recharge Areas are those with geologic and hydrologic conditions that promote rapid infiltration of recharge waters to groundwater aquifers. 6.) Geologically Hazardous Areas in Jefferson County are characterized by slope, soil type, geologic material, and groundwater that may combine to create problems with slope stability, erosion, and water quality during and after construction or during natural events such as earthquakes or severe rainstorms. 7.) Marine shorelines and islands are susceptible to a condition that is known as seawater intrusion. Seawater intrusion is a condition in which the saltwater/freshwater interface in an aquifer moves inland so that wells drilled on upland areas cannot obtain freshwater suitable for public consumption without significant additional treatment and cost. Maintaining a stable balance in the saltwater/freshwater interface is primarily a function of the rate of aquifer recharge (primarily through rainfall) and the rate of groundwater withdrawals (primarily through wells). The Washington Department of Ecology is the agency with statutory authority to regulate groundwater withdrawal for individual wells in Jefferson County. New development, redevelopment, and land use activities on islands and in close proximity to marine shorelines in particular should be developed in such a manner to maximize aquifer recharge and maintain the saltwater/freshwater balance to the maximum extent possible by infiltrating stormwater runoff so that it recharges the aquifer. 8.) The site plan as submitted with the stormwater management application on May 4, 2017 and supplemental site plan dated March 13, 2018 have been reviewed for consistency under the UDC, and has been approved by Jefferson County Department of Community Development. Any modifications, changes, and/or additions to the stamped, approved site plan dated March 20, 2018 shall be resubmitted for review and approval by Jefferson County Department of Community Development. 9.) This approval is for a Stand -Alone Stormwater Permit only. Any future permits on this site are subject to review for consistency with applicable codes and ordinances and does not preclude review and conditions which may be placed on future permits. 10.) NOTICE: This permit does not excuse the proponent from complying with other local, state, and federal ordinances, regulations, or statutes applicable to the proposed development, but consistent with RCW 90.58. Development pursuant to this permit shall be undertaken subject to the applicable policies and performance standards of the Jefferson County Shoreline Management Master Program and the Jefferson County Unified Development Code. If during excavation or development of the site an area of potential archaeological significance is uncovered, all activity in the immediate area shall be halted, and the Administrator shall be notified at once. The Federal Endangered Species Act rules to protect threatened Chinook and Summer -run Chum salmon Page 3 of 3 became effective on January 8, 2001. Bull trout have been listed as threatened since early 2000. Under the ESA, any person may bring lawsuit against any individual or agency that "takes" listed species (defined as causing harm, harassing, or damaging habitat for the listed species). In addition, the National Marine Fisheries Service can levy penalties. Portions of Jefferson County, including marine environments are included as "critical habitat" for listed species. Development of property along any marine shoreline, freshwater shoreline, or floodplains could harm habitat if protective measures are not taken. To minimize the potential to damage habitat, all property owners developing adjacent to marine shoreline, freshwater shoreline, or floodplains are advised to do the following: - All development activities should avoid unstable slopes, wetlands, and forested areas near surface waters - Remove minimal vegetation for site development, especially large trees - Allow trees that have fallen into surface waters to remain there - Infiltrate stormwater from buildings and driveways onsite through drywells rather than discharging directly into surface waters or roadside ditches The Federal Bald and Golden Eagle Protection Act requires landowners within 660 feet (1/8th of a mile) of an eagle nest to consult with the US Fish and Wildlife Service. This Eagle Act prohibits anyone from "taking" bald eagles. This federal law defines the term "take" and describes the possible legal consequences when a "take" occurs. Among other actions, "take" includes a disturbance of bald eagles or their habitat. Under federal law a permit may still be required for activities that impact bald eagles or their habitat. Contact the US Fish and Wildlife Service (http://www.M.gov/pacific/eagle/) to learn more about how this law affects your project. Any individual, group, or agency can bring suit for a listed species "taking", even if you are in compliance with Jefferson County development codes. The risk of a lawsuit against you can be reduced by consulting with a professional fisheries habitat biologist, and following the recommendations for site development provided by the biologist. For more information, contact the National Marine Fisheries Service in Seattle, or the U.S. Fish and Wildlife Service. APPEALS: Pursuant to RCW 36.70C, the applicant or any aggrieved party may appeal this final decision to Jefferson County Superior Court within twenty-one (21) calendar days of the date of issuance of this land use decision. For more information related to judicial appeals see JCC 18.40.340. UDC A mirustrator MLA17-00038 DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street I Port Townsend, WA 98368 360-379-4450 1 email: dcd@co.jefferson.wa.us www.co.jefferson.wa.us/commdevelopment Page 3 of 3 j a "04D y { Subject Parcel Boundary 1W f 11 y �1A7, 'T- r; 82 5K-01 ill' .R T �A` �■ E j 2018 f I C k �NtCoLiWTY } TYMVEL 44 r� Ludlow Bay Rd 0 80 160 320 480 640 Ft Source: http://maps.co jefferson.wa.us Original Scale: 1 inch = 160 Ft Drawn By: Everett A. Sorensen, P.E. Sheet 1 Streamline Environmental, Inc. y Site Vicinity with LIDAR Only 715 Grant Street; Port Townsend, WA 98368-2405 everett@streamlineenv.com 360-821-9960 Oswald Proposed Single Family Residence April 24, 2017 1279 Ludlow Bay Road; Port Ludlow, WA 98365 S7rHEAM�Iq �^ MO275,362 SF (6.321 Acres) APN 821152004 A}vrww��'1+�-__'�� �..� ** , ����r�'� 'rte `.��6; �i,� ��Y�t�,td;:_�',., a� � �, _ . �i o fl 821152005 1275 Ludlow Bay Rd 243,410 SF (5.59 Ac.) Existing Driveway 821152007 1273 Ludlow Bay Rd 98,732 SF (2.27 Ac) SEP83-00161 821152006 1275 Ludlow Bay Rd Cpl 22%Sloe �"� Ex. Foot Trail 'I Ex Well 82 � " h� 7 Culvert 969000030 "fa 4- 1. k Subject Parcel Boundary I Existing 60 ft wide Easement AFN 557596 nned Rural Residential lication In -Progress) 1201 Ludlow Bay Rd y Ex Gate ,ter Existing Non -Fish r f Seasonal Stream I a` Existing Cul -de -Sac -- cx�2a Existing Storm Ditch r ,> Ludlow Bay Rd 0 80 160 320 -+OU 04u rt Source: http://maps co.jefferson wa.us Original Scale: 1 inch = 160 Ft Drawn By: Everett A. Sorensen, P. E. Sheet 2 Streamline Environmental, Inc. 715 Grant Street; Port Townsend, WA 98368-2405 Site Vicinity with Existing Conditions everett@streamlineenv.com 360-821-9960 Oswald Proposed Single Family Residence April 24, 2017 ' 1279 Ludlow Bay Road; Port Ludlow, WA 98365 s'f74Ea INE r�oME�� 275,362 SF (6.321 Acres) APN 821152004 4 Ja QO Proposed Gravel Parking Area 2,700 SF pT l'i. Sl �C(7MZ'tNl . Proposed/Culvert 821152005 1275 Ludlow Bay Rd 243,410 SF (5.59 Ac.) Existing Driveway 821152007 1273 Ludlow Bay Rd 98,732 SF (2.27 Ac) SEP83-00161 821152006 1275 Ludlow Bay Rd 82 a/, 5r_u4 821 s=,2cio7 azi*M* Culvert 969000030 { Sub ect Parcel Boundary Proposed Driveway Existing 60 ft wide Easement AFN 557596 C- W /Storm Ravine 7� r .) j term ttent Flow) ' I "dft. 821152001 50%./Slone 11,294,493 SF (259 Acres) PRE08-00016 (Planned Rural Residential Application In -Progress) WAASv r 1201 Ludlow Bay Rd Ex Gate Existing Non -Fishes �A Seasonal Stream . i r - 32550 Existing Cul -de -Sac -_, Safi ,ISTVa- OM Idle, Existing Storm Ditch f� y�� 200 Ludlow Bay Rd 0 80 160 320 480 640 Ft r _ Source: http://maps-co.jefferson.wa.us i Original Scale: 1 inch = 160 Ft Drawn By: Everett A. Sorensen, P.E. Sheet 3 Streamline Environmental, Inc. Site Vicinitywith Existing and Proposed Conditions 715 Grant Street; Port Townsend, WA 98368-2405 g p everett@stream]ineenv.com 360-821-9960 Oswald Proposed Single Family Residence April 24, 2017 f 1 1279 Ludlow Bay Road- Port Ludlow, WA 98365 sr man► Mq `l _- 275,362 SF (6.321 Acres) APN 821152004 r nrvrRvrvn�rr rvrA� wmM-4WO N -0 N 00 � � G) A N o 3 = @ CT i o o CD m 3QCD<< m o CD m D 3 D o rn v o 3 T = - � N U1 m n CD o cnm cn 0 v W 0 N 0 0 f =-7 CD 0- Port Ludlow D�2' CD = aa��M MO -1 ueaW C: 0 N -•0 O W N OU 4 —Qn•O 00 �' =C/)0 � � ° CD (n a v o G) C1 n o ci -a v ri 0 n 6 0 0 C: v0 <__< c0 (D�, N CD n=0 CL N ,Q v(na c=Q°' > wcn g� X C IV r 0) 0 00 00 - o `t cnin30 p D•�co a v o' o (n m .0 C)- 1`* n00 (p3U,Q `ea e e e e e e o O !r m x N 0 0 cn cD C) CSD (D O < 0 0 -1 CD =3 O o (Q o m un D rn v U) m .---" N CD CD X CD G) Q CD =� v � 0 p5 cn CD OO � o N o T �Z o cn cn CC CD OD° o C- CD � o CD C.0 CD <,+ CD r -n C37N0 n COpo i]Z i/! m CD -� X ,4 CL o . _'`')Dg� 0 25 -n t?' (Q 0 C: Z3LID tp res - ra p A_J = cc OL o N. = U) n W -vCD C N 0 m Qo (n :3.� 0 c D- =3 = �C �m nCD (D Q Q S I rn c0 1 ,t+ur ti N cn 009 '= -O O 'IDCD 5. O�©-10(/)- NrO ....+ 0 co 0 0 M. CD o�o�,o < CD O C 4 " a CD O c° �' 0) D a w o �_ CD ( (n v v n,< o .-. 0. rn 0 0 (n N Q Q o o M n 1 ;:� CC) C/) con r 0 0 a o 3 Z v rn CCn �DCD (n O Q (D D7 O W = (D OOn a) '+ -06 C31 (D M =-7 CD 0- Port Ludlow D�2' CD = aa��M MO -1 ueaW C: 0 N -•0 O W N OU 4 —Qn•O 00 �' =C/)0 � � ° CD (n a v o G) C1 n o ci -a v ri 0 n 6 0 0 C: v0 <__< c0 (D�, N CD n=0 CL N ,Q v(na c=Q°' > wcn g� X C IV r 0) 0 00 00 - o `t cnin30 p D•�co a v o' o (n m .0 C)- 1`* n00 (p3U,Q `ea e e e e e e o O !r m x N 0 0 cn cD C) CSD (D O < 0 0 -1 CD =3 O o (Q o m un D rn v U) m .---" N CD CD X CD G) Q CD =� v � 0 p5 cn CD OO � o N o T �Z o cn cn CC CD OD° o C- CD � o CD C.0 CD <,+ CD r -n C37N0 n COpo i]Z i/! m CD -� X ,4 CL o . _'`')Dg� 0 25 -n t?' (Q 0 C: Z3LID tp res - ra p A_J = cc OL o N. = U) n W -vCD C N 0 m Qo (n :3.� 0 c D- =3 = �C �m nCD (D Q Q S I rn c0 1 ,t+ur ti cn 009 '= -O O 'IDCD 5. O�©-10(/)- (0 5,;a mw 1 ....+ 0 co 0 0 NW000 CD o�o�,o < CD O C 4 " a CD O c° �' 0) D a CD ( v v Y .. < WO 0 j -m . o m Cn @ �G)N 00 @ � ^)=o 3 CG 7 I �F r. IV CO N CO Co 7 '�•.< CD Q C.0 1 -4C (D =< MM= 3 P cD < < m `2 3 . 0 CD Cl) N D 0 0-0 m 3 D 00 fU) CD cn ° m o 0 m 3 I m 0 o NQQ(c C) Ln y�-0� v rn �cc m u 9 o N C7 rF O rt �F r. IV CO S v (D ^' O `2 3 O C 1i Cl) N o 0 0-0 C/) 00 0) ' fU) CD TI n<< 0 o 0 -o m 0 o NQQ(c y�-0� v rn �cc n -� � r m -0 m w m TO z 3 �-n Q co ;yC�cn O cn (n cn N OODD CD ' o CD . r /_-r CD 0 D, 0) U7 0 CD CD fA O =3 Cn 9 o 1 C7 rF O rt �F r. IV S - (D ^' '^ V/ C 1i (D TI 0 (D m o v CD CD m m <3 ' a v v CD CD N N N p} -n (D O C7 o c O 90 O r- < (D 00 0) N CP 7 �1 N U1 (jo O O O Al -w O C:) v W O o ;t Aoo %40 o c 90 n �! LT c OD� � n o rn OL `n W. zd CDD O �3 mA. XO cc 3 CD Q) CD o cn CD v O >�4 CO Tjm y -mn r. IV rV w "L3 n o O X. O CD CD cn Q 0 - 3 p N o �0 O O CD CD �< Q (D w O (0 0 co 0 �CD Q C/) p Q -1 CD �. oNa sv p CD c' p CD v� :;hG) O @ -.%3 Qw pCD <OF,' CD�CD v �a o n 0 'o cD 3 om o%< o(o O O a� m0 �cr c (c ::r = cD -a _-0 ::rO O 5' O X. CD 6 o w 3 wo -0a n = o CL 7 - • n I n (D n ::r CL O O O Q O (D O O Vi O- Uf Z$ -m a CDo a a 0v Cf) g n. su EwN (i1 0 CD w 000 0C Q CD � CL 3 (D O < O CC CD CL c�-0 U) a o. a- CD O C CD ON U Np cr Q 0 CD m oC/) G) 000 c C)- 0- 0 p 2% SIO e PRO 71 X50 - MAR 2 18 '!i"`., �..1'� "1 ., COUNTY SIGNAT� Fy , Subject Parcel Proposed Gravel SJ° e , Boundary Parking Area 2,700 SF Proposed Existing 60 ft wide Proposed(Culvert #1 Driveway Easement AFN 557596 821152005 — 1275 Ludlow Bay Rd _ _ _ Proposed Culvert #1 _ _ _ 243,410 SF (5.59 Ac.) Proposed Approximate _ " .. Ditch — z Contributing Area: • s� _y:, .- \ .. r V( 130,000 SF Existing Driveway sloe r , � Stormwater Ravine Proposed 821152007 Culvert #2 Ex Well ` I`� (Intermittent Flow) 1273 Ludlow Bay Rd 98,732 SF (2.27 Ac) SEP83-00161 Proposed Culvert a2lI52v" Proposedd'�4 ` a , ,l #2 Approximate Ditch , — — — Contributing Area: 821152006 , '* 90,000 SF 1275 Ludlow Bay Rd 821152001 50 e 11,294,493 SF (259 Acres) aZs1 Exp ' '' -- PRE08-00016 - I.Vned Rural Residential / A"So 969000030 Culvert 1 � Appl atiocjnPrngcess). — 1201 Ludlow Bay Rd Existing Non -Fish Ex Gate \' '®`a LQ Seasonal Stream x O i ®, k •' "- _ _ �4-32550 k1� Existing Cul -de -Sac _ o Existing Storm Ditch ,P Ludlow Bay Rd 0 80 160 320 480 640 Ft Source: http://maps.co.jefferson.wa.us Original Scale: 1 inch = 160 Ft Drawn By: Everett A. Sorensen, P.E. Supplemental Site Plan with Proposed Streamline Environmental, Inc. y p p Driveway Cuts, U slo a Ditches and Culverts 715 Grant Street; Port Townsend, WA 98368-2405 everett@streamlineenv.com 360-821-9960 Oswald Proposed Single Family Residence March 13, 2018Ea 1279 Ludlow Bay Road; Port Ludlow, WA 98365 STIE"u,R�,�EN ,�z 275,362 SF (6.321 Acres) APN 821152004 v�. • b,: M � ry. f1 i �. , v�. • b,: M � ry. e DEPARTMENT OF COMMUNITY DEVELOP NltY-':$ 621 Sheridan Street, Port Townsend, WA 98368 Tel: 360.379.4450 1 Fax: 360.379.4451 JEFFERSON Web: www.ro.iefferson.wa.usfcomrmanitydevelapment ��� j E-mail: dtd(&to,lefferson.wa.4rs SUPPLEMENTAL APPLICATION STORMWATER MANAGEMENT PERMIT MLA# PROJECT/APPLICANTNAME: Oswald Single Family Residence Applications for grading projects or land -disturbing activities which require a storrnwater management permit shall include the following information. This information may also be provided on other diagrams, plans, studies, or attachments submitted with the project application. If so, please indicate such on this permit application. The Administrator may waive specific submittal requirements determined to be unnecessary for review of the application. 1. Source of fill material and deposition of excess material. Cut material will be used to the maximum extent possible as fill material. Additional material, If needed, will be provided by Shold Excavating m Hadlock quarry. Cess excavate material wI be retumed to s grave sen sorting operation n a ac . 2. Physical characteristics of fill material: t"-mjnus-aggregste for dTrn- it.- ro 0 n -for 3. Proposed methods of placement and compaction consistent with the applicable s ndards jk#tXn4rANWSNjI Mate�tel-m-mead-its-Ih€#s a _ RMWV'ATFR1� If I L L^ 4. Proposed surfacing material. ! Thu proporied-=d-suaace will he gravel. t Or COMMUNITY >p>wVELI i 5. Proposed method(s) of drainage and erosion control. SIGNAl'filti : —5 r zlt L 6. Methods for restoration of the site. All disturbed pround surfaces remaining after driveway construction will be re -vegetated with native plants. shrubs and ground cover. 7. Demonstrate that Instream flow of water will remain unobstructed. The small QuIly on ifite neighboring arcel to the south will be maintained. Though not expected to be flowing d&9 construction, a proposed culvertwill be installed as shown on the Slormwater Site Plan along with dp rap erosion protection at the culvert outflow. 8. Demonstrate that erosion and sedimentation from outflow channels will be minimized by vegetation or other means, and demonstrate that pond runoff will be controlled to protect adjacent property damage Existing native vegetation and undisturbed ground sudace extending X00 It In the downhill direction from all proposed land -disturbing activities at propos pa ng a-roei is expected o alosorb and IntiRrale dispersed s ormwa er 11ow aria to capture secliment. P -rap app a pmpsead} ertggWftl*)-Will `h'i'll"e 131`96ar"" woes" �tfi6a. n 1ie4599. By signing the application form, the applicartllowneT attests that the information provided herein is true and correct to the best of their knowledge. I also ce I that this pplicalran is being made with the full knowledge and consent of all owners of the affected (LANDOWNER ORAUTHORIZED REPRESENTATIVE SIGNATURE) (DATE) G:WerrritCanterWWORMSnffQFtMStaffr"aM1stamwntermWrlponN FINALdw REV =00014 Page 3 � r }� � r! Win. ,f ..r _ _ _ .� -. -.� JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street • Port Townsend • Washington 98368 360/379-4450 • 360/379-4451 Fax http://www.co.jefferson.wa.us/commdevelopment/ STORMWATER SITE PLAN SUBMITTAL TEMPLATE MLA# PROJECT/APPLICANT NAME: Erik Oswald 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. Applicant proposes to build a single family residence. As a first phase of development, the applicant proposes to construct a gravel driveway from the existing end of a shared private driveway, along an existing 60' access easement and into the applicant's parcel. A total of 870 ft of additional private driveway is proposed; 650 ft through neighboring parcels and 250 ft on the subject parcel Existing Conditions Summary 2. Describe the existing topography. Indicate contours on the site map. The existing topography along the existing access easement and proposed driveway corridor slopes moderately downward to the west at a grade of about 20%. The southeastern half of the parcel is significantly steeper, with slopes up to 50%. 3. Describe the existing vegetation. Indicate native vegetation areas on the site map. The 6.3 acre parcel is entirely vegetated with native shrubs and trees, including mature second -growth forest. 4. Describe the existing soils. Indicate soil type on the site map. Native soils mapped on the site include (1) Kitsap Gravelly Loam associated with 15 to 30% slopes, (2) Kitsap Silt Loam associated with 30 to 50% slopes, and (3) Cassolary Sandy Loam associated with 30 to 50% slopes. All of these soils are considered moderately well -drained. 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. There are no mapped or observed wetlands, streams, gullies or other indications of surface water or surface flows on the sub'ect parcel. A small ravine or gully with a low seasonal flow drains westward just south of the subject parcel. It appears that this drainage currently disperses into relatively shallow -sloped ground surface between the proposed driveway and shoreline (all within the neighboring parcel to the south). The applicant proposes to install a culvert beneath the proposed driveway at this location. 6. Describe any excess levels of noise generated by the proposed use or activity: None. stormwater site plan template doc — rev 4126/2014 7. Describe significant geographic features and critical areas (i.e., environmentally sensitive areas such as wetlands, streams, stee2 slopes, etc.) on the site. Indicate location on the site map. The site includes a marine shoreline on the northwestern boundary. The site is mapped by Jefferson County's on-line GIS as including (1) an unstable shoreline, (2) a moderate landslide hazard, (3) soils susceptible to excessively fast recharge, (4) an erosion hazard on the uphill southeastern half of the parcel, and (5) a coastal seawater intrusion protection zone. The site does not include any wetlands or streams. 8. Describe the general vicinity of the site, including adjacent land uses and structures, utilities, roads, and sensitive/critical areas streams, wetlands, lakes, stee slo es, etc.). The site is surrounded by forest and large residential parcels. Permanent Stormwater Control Plan This portion of the Stormwater Site Plan consists of the selection and installation of the appropriate stormwater control BMPs and facilities to remain in place after construction of the project is completed. "Medium" size projects are required to have the totals calculated of all impervious surfaces, pollution -generating impervious surfaces, and pollution -generating pervious surfaces to verify that the thresholds for treatment facilities and flow control facilities are not exceeded. g. 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. The applicant proposes full stormwater dispersion per Ecology's BMP T5.30. 100% on-site dispersion and infiltration of stormwater will be achieved through dispersion onto vegetated surfaces with >100 ft of downhill vegetated flow paths, all within the subject parcel. The proposed current phase of development (driveway and parking area) will create impervious surface covering only 2% of the parcel's land area. The proposed SFR will create less than 10% impervious surface. Greater than 65% percent of the parcel's land area will remain as native vegetation. 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.] No treatment facilities are proposed. 11. Describe the performance goals and standards applicable to the project. 100% on-site dispersion and infiltration, 100% pollution prevention, 100% erosion control during construction. 12. Describe the flow control system. a Run-off from the proposed driveway will be dispersed along its length,, At least one ravine that exhibits seasonal surface flow will require a culvert to transmit peak stormwater from the uphill ditch to downhill vegetated surfaces. Under normal light rainfall conditions, existing native vegetation and undisturbed surfaces appear to effectively absorb and infiltrate stormwater. The applicant proposes to retain as much native vegetation as is practical. stormwater site plan template doc — rev 4/28/2014 13. Describe the water quality system. None proposed. 14. Describe the conveyance system analysis and design. No conveyance systems proposed, other than a proposed 12-inch.culvert beneath driveway to accommodate existing gully with only seasonal storm flow. 15. Describe the source of fill material, physical characteristics of fill material, and deposition of excess material. -Proposed driveway cut material is expected to be used as fill material to the maximum extent practile, thus minimizing the need for imported fill. An estimated 100 to 140 tons of imported gravel and pit run will be required to create a 3 to 4 -inch thick layer of driveway aggregate. 16. Proposed methods of placement and compaction consistent with the applicable standards on Appendix Chapter 33 of the Uniform Building Code. Fill material on the downhill side of the proposed driveway will be machine -compacted in 6 -inch lifts. 17. Describe the proposed surfacing material. The proposed driveway and parking area will be surfaced with gravel. Undeveloped surfaces will remain vegetated. 18. Describe methods for restoration of the site. Disturbed areas will be covered with straw mulch during construction and subsequently re -vegetated with native ground cover, plants and shrubs. 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. No flow control nor treatment facilities are proposed. 20. List here and include any special reports or studies conducted to prepare the Stormwater Site Plan. Site evlauation including walking the site during the wet season to examine indications of stormwater, examining existing soil evaluation holes and verifying at least three ft of normally unsaturated material. 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. None stormwater site plan template doc — rev 4/28/2014 f h VVVVVV CONSTRUCTION STORMWATER POLLUTION PREVENTIONPLA f The Construction SWPPP addresses sediment and erosion control during construction, s indicated by the applicant 'in the template that follows must be installed on the ground during all construction phases of the prIjAlST p�q onent is responsible for preventing sediment and erosion impacts to environmentally sensitive areas and off-site areas. Consult t f4op Stormwater Pollution Prevention (SWPP) Best Management Practices (BMPs) Packet for guidance, particularly wit trtFal.',i''r?esidential development. SECTION -1 — CONSTRUCTION SWPPP NARRATIVE Construction Stormwater Pollution Plan Elements. Describe how each of the Construction SWPPP elements has been or will be addressed. Identify the type and location of BMPs used to satisfy the required element. If an element is not applicable to the proposal, justify in writing. Descriptions of the 12 Elements are found at Volume II Section 3.2.3 of the Manual (beginning on page 3-7). 12 Required Elements — Construction SWPPP 1. Mark Clearing Limits. Clearing limits will correspond to the proposed driveway and parking area_ No other site clearing is proposed at this 2. Establish Construction Access. Construction access will be limited to the exisitng gravel driveway, depicted on the Construction Stormwater Site Plan, 3. Control Flow Rates. No dewatering nor flow diversion will be needed for site development. 4. Install Sediment Controls. Straw mulch and straw logs will be placed downhill from the driveway corridor during and after construction. Existing native vegetation extending at least 200 ft downhill from the proposed driveway will absorb stormwater and eroded materials, if not captured by straw mulch and straw logs. 5. Stabilize Soils. All disturbed surfaces will be covered with straw mulch at least 2" thick to minimize erosion of these exposed surfaces. Any soil or sediment left in piles for at least two days during the wet season (7 days during the dry season) will be covered with plastic, secured around the edges, to prevent erosion. 6. Protect Slopes. Straw logs and/or silt fences downhill from all disturbances will prevent sediment transport. 7. Protect Drain Inlets. There are no storm drains at the site requiring protection. stormwater site plan template doc — rev 4/28/2014 12 Required Elements — Construction SWPPP (continued) 8. Stabilize Channels and Outlets. There are no channels or outlets at the site. 9. Control Pollutants. Pollution will be prevented. All site workers will be instructed to prevent the discharge of contaminants, including solid waste, hydrocarbons, solvents, etc. 10. Control De -Watering (the act of pumping groundwater or stormwater away from an active construction site). No dewatering is expected to be needed. 11. Maintain Best Management Practices (BMPs). Conditions will be assessed regularly. Construction stormwater management features will be adjusted, repaired and replaced as needed to maintain full function. Upon completion of construction and re -vegetation of disturbed surfaces, temporary erosion and sedimentation controls will be removed taking care to not release accumulated sediments. 12. Manage the Project. Construction activities will be completed in an orderly fashion and coordinated to minimize surface disturbance. Exposed surface areas will be minimized during all construction phases. Work will not be conducted during periods of intense rainfall. Temporary erosion and sedimentation controls will be inspected regularliy and adjusted, repaired and replaced as needed to maintain full function. 2. Adjacent Areas. a. Description of the adjacent areas that may be affected by site disturbance (e.g., streams, lakes, wetlands, residential areas, roads). Adjacent surrounding residential areas will not be affected by construction activities, other than normal construction noise limited to daylight hours. Access to the neighboring parcel to the south will be maintained throughout the project. The existing storm ravine will be protected from erosion by straw mulch and straw logs staked in-place. In order to protect Ludlow Bay Road, mud and other debris will be removed from trucks prior to departing the site during construction activities. b. Description of the downstream drainage path leading from the site to the receiving body of water (minimum distance of 400 yards). The site fronts Ludlow Bay. Stormwater is well retained by native vegetation, but likely overflows as sheet flow into the Bay during_peak conditions. No indications of concentrated surface from from the subject parcel and the three neighboring parcels to the south were observed. The site immediately to the south of the subjec site appears to infiltrate sto_rmater into sandy shoreline soils to the extent that no surface flow paths were observed during peak wet season. 3. Environmentally Sensitive Areas. a. Description of environmentally sensitive areas that are on or adjacent to the site. The site includes a marine shoreline on the northwestern boundary. The site is mapped by Jefferson County's on-line GIS as including (1) an unstable shoreline, (2) a moderate landslide hazard, (3) soils susceptible to excessively fast recharge, (4) an erosion hazard on the uphill southeastern half of the parcel, and (5) a coastal seawater intrusion protection zone. The site does not include any wetlands or streams. Despite mapping, the site appears stable. No evidence of instability, landslides, or erosion were observed. stormwater site plan template doc — rev 4/28/2014 stormwater site plan template doc — rev 4/28/2014 b. Description of special requirements for working in or near environmentally sensitive areas. Minimize disturbance of vegetation and land. 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). Despite County mapping, no erosion problem areas have been identified on or near the site. & Construction Phasing. a. Construction sequence 1. Site preparation (marking of clearing limits, filter fence installation, establishment of construction entrance and truck de -mudding area, staging of straw bales) 2. Earthwork to create proposed driveway. b. Construction phasing (if proposed) All currently -proposed work will be completed in one phase. 6. Construction Schedule. Wet season is October 1 through April 30 (page 2-21 of the Manual). I. Provide a proposed construction schedule. Work to begin as soon as permitted, likely as early as Summer 2017. II. Wet Season Construction Activities. a. Proposed wet season construction activities. None b. Proposed wet season construction activities for environmentally sensitive areas. None 7. Financial/Ownership Responsibilities. a. Identify the property owner responsible for the initiation of bonds and/or other financial securities. Erik Oswald b. Describe bonds and/or other evidence of financial responsibility for liability associated with erosion and sedimentation impacts. Applicant is self -bonded. 8. Engineering Calculations. Provide Design Calculations on a separate sheet for the following, if applicable. a. Sediment Ponds/Traps. Not applicable b. Diversions. NA c. Waterways. NA d. Runoff/Stormwater Detention Calculations NA stormwater site plan template doc — rev 4/28/2014 4 ON Stormwater Site Plan Changes If the designer wishes to make changes or revisions to the originally approved Storrnwater Site Plan, the proposed revisions shall be submitted to DCD prior to construction. The submittal shall include substitute pages that include all proposed changes, revised drawings showing any structural changes, and any other supporting information that explains and supports the reason for the change. Final Corrected Plan Submittal If the project included construction of conveyance systems, treatment facilities, How control facilities, or structural source control BMPs (not standard on --site stormwater management BMPs), the applicant 'shall submit a final corrected plan ("as-builts") when the project is completed. These should be engineering drawings (stamped by a' licensed civil engineer) that accurately represent the project as constructed. APPLICANT SIGNATURE By signing the Construction SWPPP worksheet, I correct to the be t of my kno edge. I also certify owners f t ed grope (I ANDOW ER OR AUTHORIZED REPRESENTATIVE SIGNATURE) as the applicantiowner attest that the information provided herein is true and that this application is being made with the full knowledge and consent of all THIS SPACE MAY BE USED FOR ADDITIONAL NOTES, IF NEEDED: (DATE) -. � ;; y:.r.;.:.:...