Loading...
17-101601 (2).,: R =r-PERMIT PPLICATION CITY OF - PU V L N w� Federal Way RECEIVED I I S F- APR 0 7 2017 PERMIT NUMBER � � _ ` O I Go l _ T ri WAYA SITE ADDRESS SUITE/UNIT # PROJECT VALUATION ZONING ASSESSOR'S TAX/PARCEL # $ 00 003� TYPE OF PERMIT BUILDING J�_PLUMBING Y�_MECHANICAL ❑ DEMOLITION ❑ ENGINEERING ❑ FIRE PREVENTION NAME OF PROJECT LL ffi6kl1x1:i `it>,GL+(�s-�`� LL C i�cN-� /ate � -7- PROJECT DESCRIPTION Detailed description of work to e g"`" be included on this permit only - - - --.. NAME �- PROPERTY OWNER MAILING ADDRESS C CITY �PcW L. STATE ZIq Zr� .PL'%a. � ` WA CONTRACTOR APPLICANT PROJECT CONTACT (The individual to receive and respond to all correspondence concerning this application) PROJECT FINANCING When value is $5,000 or more (RCW I9.2ZO95) NAME MAILING ADDRESS '2.I-4C1 t s i oqi - ok�.2 �kfyss �s � •t� CITY V_e�_� WA STATE CONTRACTOR'S LICENSE # 402 $�� �3( Gard NAME c.,�_ l-c L MAILING ADDRESS CITY NAME r MAILING ADDRESS L2_?-i,1,4 2-< CITY NAME N� � MAILING ADDRESS, CITY, STATE, ZIP 5E STATE ZIP �.Jiq 9gC-3 EXPIRATION DATE S iJ 11 / o g / I , i0-k- _J� 4 STATE ZIP : L Ak --1- STATE vwa ZIP g80r 3 PRIMARY PHONE Zc,(.=. _ 2!&- i- 3-4 2,8") E-MAIL �otL� •Jr"FiGI?i�ION �*k;YAU,s�I C� PHONE 251,- 5 4- aZW 2- E-MAIL � jnl FAX FEDERAL WAY BUSINESS LICENSE # PRIMARY PHONE E-MAIL FAX PRIMARY PHONE E-MAIL n ce✓Ic%� E �O.Cit,%, c FAX - OWNER -FINANCED PHONE I certify under penalty of perjury that I am the property owner or authorized agent of the property owner. I certify that to the best of my knowledge, the information submitted in support of this permit application is true and correct. I certify that I will comply with all applicable City of Federal Way regulations pertaining to the work authorized by the issuance of a permit. I understand that the issuance of this permit does not remove the owner's responsibility for compliance with local, state, or federal laws regulating construction or environmental laws. I further agree to hold harmless the City of Federal Way as to any claim (including costs, expenses, and attorneys' fees incurred in the investigation and defense of such claim), which may be made by any person, including the undersigned, and filed against the city, but only where such claim arises out of the reliance of the city, including its officers and employees, upon the accuracy of the information supplied to the city apart of this application. SIGNATURE: - DATE PRINT NAME: 6 `J CDs — -- Bulletin #100 - February 22, 2016 Page 1 of 2 k:\Handouts\Permit Application VALUE OF MECHANICAL WORK MECHANICAL PERMIT $ Indicate how mart of each Qjpe o to be installed or relocated as art v this ro'ect. Do noxtudee;cisiin_QjidureStorernain. AIR HANDLING UNITS FANS GAS PIPE OUTLETS OTHER (Describe) AIR CONDITIONER FIREPLACE INSERTS HOODS (c.--ig BOILERS I . FURNACES HOT WATER TANKS (Gas) COMPRESSORS GAS LOG SETS REFRIGERATION SYST 1 DUCTING GAS PIPING WOODSTOVES VALUE OF PLUMBING WORK PLUMBING PERMIT � � Indicate how nmqy of each (tipe o ure to be installed or relocated as art o this roj . Do not include exist' Ixtr4res to remain. BATHTUBS (orTub/Sho—Combo) LAVS (Hand Sinks) TOILETS WATER PIPING DISHWASHERS RAINWATER SYSTEMS URINALS OTHER (Describe) DRAINS _L SHOWERS VACUUM BREAKERS DRINKING FOUNTAINS SINKS (%;then/utility) WATER HEATERS (Electric) HOSE BIBBS _� SUMPS ' Z WASHING MACHINES TOTAL FIXTURES GENERAL INFORMATION CRITICAL AREAS ON PROPERTY? WATER PURVEYOR SEWER PURVEYOR VALUE OF EXISTING IMPROVEMENTS y.e Ce W v+- L9 (A,� $ EXISTING/PREVIOOUUS USE LOT SIZE (In Squa a Feet) EXISTING FIRE SPRINKLER SYSTEM? PROPOSED FIRE SUPPRESSION SYSTEM? v(,tw" %S --2 'E:� -)- ❑ Yes j' No ❑ Yes >!L,No r RESIDENTIAL -NEW OR ADDITION AREA DESCRIPTION (in square feet) EXISTING PROPOSED TOTAL FOR OFFICE USE BASEMENT (t� 'zI) FIRST FLOOR (or Mobile Home) SECOND FLOOR COVERED ENTRY 3 �� DECK GARAGE -16, CARPORT ❑ OTHER (describe) Area Totals MUSTlnG �PROZ7,1 TOTAL "ArEw �roxEs olv r ESTIMATED SELLING PRICE $ �� # OF BEDROOMS COMMERCIAL — NEW/ADDITION AREA DESCRIPTION Area in Occupancy Group(s) Square Feet NEW BUILDING ADDITION COMMERCIAL — REMODEL/TENANT IMPROVEMENTS AREA DESCRIPTION Area in Occupancy Group(s) Square Feet TOTAL BUILDING TENANT AREA ONLY PROJECT AREA ONLY Construction # of Additional Information Tvne Stories Construction # of Additional Information TV TAe Stories Bulletin #100 — February 22, 2016 Page 2 of 2 k:\Handouts\Permit Application STORM DRAINAGE SMALL SITE TECHNICAL INFORMATION REPORT For New LL Management LLC Located at XXXX S 337' Place, Federal Way, WA 98001 PARCEL # 4420600035 FOR LL Management LLC PHONE: 206-861-3728 Date: April 6, 2016 Prepared by: Anstey Engineering CIVIL ENGINEERING/CONSULTING 8627 NE 1801h Street Bothell, Washington 98011 Phone: (206) 303-7639 fax (425) 658-9203 e-mail: benanstey@ansteyengineering.com RECEIVED APR 0 Z 2017 CITYCOMMUNITY DEVELGPMEiVT LL MANAGEMENT LLC TIR Pagel of 12 AE 17-28 LL MANAGEMENT LLC Residence Table of Contents Technical Information Report (TIR) Project Overview 3 Conditions and Requirements Summary 1. Discharge at the Natural Location 4 2.Offsite Analysis 4 Task 1: Study Area Definition and Maps 4 Task 2: Resource Review Task 3: Field Inspection Task 4:Drainage System Description and Problem Descriptions Task S:Mitigation of Existing or Potential Problems 6 3.Flow Control and Water Quality Facility Analysis and Design Part A: Existing Site Hydrology 7 Part B: Developed Site Hydrology 6 Part C: Performance Standards 6 Part D: Flow Control System 6 Part E: Water Quality System 6 4. Conveyance System Analysis and Design 7 5. Erosion Control Part A:ESC Plan Analysis and Design 7 Part B:SWPPS Plan Design 7 6. Maintenance and Operations 7 7.Financial Guarantee 7 8.Water Quality 7 9.Flow Control BMPs 7 Special Requirements 8 Appendix Imap 9 Figure C.2.1.1) DISPERSAL TRENCH 10 Maintenance Instructions for Basic Dispersion and Pervious Pvmt 11 LL MANAGEMENT LLC TIR Paget of 12 AE 17-28 Project Overview This storm drainage technical information report has been prepared to address the 2016 King County and City of Federal Way site development and storm drainage requirements for the proposed single family residence located in Federal Way, WA on tax parcel number 4420600035 at xxxx South 337t' Place, Federal Way, WA 98001 in King County, WA. in the NE % Section 21, Township 21, Range 4 East, WM. The Legal Description is: LOUISES NORTH LAKE TRS LOT # 7 The 15,757 SF undeveloped, site is located on the north side of S 337th Place and South of North Lake. The project consists of the creation of a new 2,244.4sf single family residence and garage (roof area) with a 747 SF driveway. The total new impervious surface area will be: 2,991.4 SF or 19% of the site. The new house will be set near S 337th Place to maximize open space and to provide maximum dispersal over the lot before any water would reach the lake. As less than 5,000sf (2991.4 SF) of impervious area is created and the project is in the Urban Growth Area the project falls under Small Lot Simplified Drainage Review per CA of the 2016 KDSWDM. A site location and sensitive areas I -map can be seen in the Appendix. This map shows that the site is not located near sensitive areas, except for the lake. The runoff from the site will travel north to North Lake. Drainage Basin = Hylebos Creek. Watershed: Puyallup River Per the 2016 King County Surface Water Design Manual CA this lot meets SIMPLIFIED DRAINGE REVIEW STANDARDS as less than 5,000sf (2991.4SF) of impervious area is created and it is in an Urban Area with Till Soil and is a small Lot less than 22,000sf. A roof downspout basic dispersion trench per Figure C.2.1.D will be used using FULL dispersion over a 100 foot minimum flow path. FULL dispersion is practical as there is a 100' foot + Natural vegetated flow path available on the lot. Full Infiltration cannot be used as the Till soil on the site is not suitable for Stormwater infiltration. Per the Sheet 15 of the King County SCS Soil map the soils are Alderwood, AgB Till Soils. This was verified by the Anstey Engineering field investigation on 3-19-2017 which found till soil, and groundwater at 12 inches below the surface. 2. Conditions and Requirements Summary The nine core requirements in Section 1.2 will be addressed in this TIR along with the 5 special requirements: LL MANAGEMENT LLC TIR Page3 of 12 AE 17-28 CORE REQUIREMENT#1 DISCHARGE AT THE NATURAL LOCATION The flows on this site will be collected and routed to a dispersion trench on the north side of the lot. The flow will continue to flow to the natural downhill flow path to the north to North Lake. CORE REQUIREMENT #2 OFFSITE ANALYSIS This is a sub -urban area and the properties are large and lightly developed. There are no significant on site flows onto this property. Runoff from the site sheet flows to the north. There is no defined downstream drainage course. No significant flows enter the property or leave the property. Task 1. Study Area Definition and Maps The properties to the west, and east of this site are vacant with large grass and forested areas, and do not discharge any significant amount of runoff onto this site. South 337th Place to the South does not drain much onto the site. No other significant flows enter the site. North Lake is to the North of the Site No concentrated surface water runoff will be discharged off -site. There are no downstream effects anticipated from the proposed development. The downstream flowpath of stormwater runoff during very large storms is to flow North to North Lake. A site map and topographical map with downstream flow path can be found in the Appendix on page 11. Task 2: Resource Review Using the King County iMap interactive tool, it was found that there are no immediate critical areas upstream or downstream of the property. The iMap also confirmed that there are no mitigating rivers, floodplain issues, there are no adopted basin plans. Task 3: Field Inspection There are no reported problems to be investigated. The amount of space and soil types present on the property clearly support the flow control BMPs being implemented. There will not be any destruction of aquatic habitat on -site or downstream. The Site was visited on March 19, 2017 and a 1/4 mile downstream investigation was made. There are no defined drainage systems in the area. From SCS Soul Map Sheet 15, Soil is AgB Till and Anstey Engineering on -site investigation LL MANAGEMENT LLC TIR Page4 of 12 AE 17-28 Task 4: Drainage System Description and Problem Descriptions For drainage control basic dispersion and pervious pavement will be implemented to comply with basic flow control of Core Requirement #3. In order to do that, the site will comply with CA flow control standard for Small Sites to match the existing site conditions using Full dispersion for the roof and pervious pavement for the driveway. These BMPs are the best available for the site as other BMPs have been found to be impractical. Runoff from the roof downspouts will be collected and then dispersed through a 32 foot long dispersal trench with notchboard per C.2.4.13 on the north side of the site. Task 5: Mitigation of Existing or Potential Problems There are no existing or potential drainage problems and water quality problems. CORE REQUIREMENT #3 FLOW CONTROL. Part A: Existing Site Hydrology The parcel is vacant, and is gently sloped with slopes of about 2%+/- sloping down to the north. The storm water runoff from the site currently disperses across the site. There does not appear to be any significant surface flow. Any runoff from a large storm event will drain to the north to North Lake. The site does not receive any significant off -site flows from the adjacent properties. Part B: Developed Site Hydrology When the new house and driveway are constructed it can use pervious pavement and Full dispersion with a dispersion trench and notch board per Figure C.2.1.D. House roof downspouts will drain to the dispersion trench. The Driveway and walk will be made of pervious pavement per C.2.7. Part C: Performance Standards Flow control BMPs are used on this site to control Stormwater to the extent feasible. Basic Dispersion will be used. This is a single family residence and as such does not pose any significant threat for pollution. No pollution generating activities are planned. This is not a 'High Use Site'. It is a single family residence. Per C-1 the site has less than S,OOOsf of new impervious surface (747sf) and the new Pervious surface is 8,197.6 sf which is less than the 14,941-(2991.4sf Imp x 1.88) = 9317.17sf allowed so it meets the pervious area standard. BMP Analysis: Full Dispersion can be used due to availability of a 100 foot+ natural Vegetated flow path available on -site. Full Infiltration cannot be used as the Alderwood AgB Till soils are not suitable for full infiltration. Groundwater was found at 12 inches below the surface. LL MANAGEMENT LLC TIR Pages of 12 AE 17-28 The Site does meet the requirements for the Restricted Footprint. The 2,244sf house and 747sf pavements totaling 2,991.4sf is less than the 4,OOOsf which could be installed for a credit of 1,008.6sf. The site does meet the requirements for the Native Growth Protection Easement and a 4,568sf Native Growth Protection Easement will be created on the north 100 of the lot to provide the 100 foot Native Vegetated Flow Path to the Lake. Raingardens and Limited Infiltration will not work due to lack of space and no outlet. Basic Dispersion will work but Full Dispersion is the preferred method of flow control. A perforated Pipe connection cannot be used as there is no available drainage connection. Pervious pavement will be used for the driveway. Part D: Flow Control System The Erosion and Sediment Control Plans along with the Site Plans include the locations of the flow control systems. In addition, cross -sections of the flow control BMPs can be found in the Appendix. DEVELOPED GROUND COVER AREA TABLE JOTAL SITE = 9,OOOsf = 0.2 ACRES LAWN OR DISTURBED AREA (not counting imp) IMPERVIOUS AREA HOUSE AND DRIVE Part E: Water Quality System 0.188 ACRES (8,197.65 SF) 2991.4sf = 0.0686 ACRES Downturned Elbows in the Catch Basins will provide additional protection. Flow control BMPs are used on this site to control stormwater. Pervious Pavement and basic Dispersion will be used. Total Impervious area = 2,991.4 SF 1 Roof to dispersion trench 2,244.4sf Use 32 foot trench @ 10LF TRENCH PER 700 SF ROOF 2 1 Driveway Total Impervious 747sf Use Pery Pvmt 1 2,991.4sf LL MANAGEMENT LLC TIR Page6 of 12 AE 17-28 CORE REQUIREMENT #4 CONVEYANCE SYSTEM No conveyance piping is needed on this project Core Requirement #5 EROSION AND SEDIMENT CONTROL Temporary ESC measures will be required as there will be disturbance of the soil to construct the driveway, and house. A silt fence around the construction area and construction entrance should be provided at a minimum. Part A: ESC Plan Analysis and Design In compliance with Core Requirement #5, Temporary ESC measures will be required as there will be disturbance of the soil to construct the driveway and house. All of the flows from the driveway and house will flow onto the lot so no adjacent properties will be affected. A silt fence around the downslope side of the construction area and construction entrance should be provided at a minimum. No special requirements are needed as no runoff will enter any drainage channel or other property. Part B: SWPPS Plan Design There are very little to no pollution -generating activities anticipated for this project. All construction BMPs will be followed including updates or revisions that may take place in the future. CORE REQUIREMENT #6 MAINTENANCE AND OPERATION The dispersion trench and pervious pavement will require little maintenance. See instructions in Appendix CORE REQUIREMENT #7 FINANCIAL GUARANTEES AND LIABILITY There is no Financial Guarantee or Liability associated with this project. The property owner will be responsible to insure that the project is constructed to the approved plans and that the drainage does not cause any problems. CORE REQUIREMENT #8 WATER QUALITY There is less than 5000sf of Pollution generating surface so no water quality treatment is required. CORE REQUIREMENT #9 FLOW CONTROL BMP'S A Dispersion trench per C.2.1.1) will be used to control Stormwater. Other BMP's were determined to be infeasible in Core Requirement #3 flow control All small lot BMP requirements were followed per Section C.2.4 of the 2016 KCSWDM. These were accomplished by using Full dispersion per Figure C.2.1.1) and pervious pavement per C.7 LL MANAGEMENT LLC TIR Pagel of 12 AE 17-28 SPECIAL REQUIREMENT #1 OTHER ADOPTED AREA -SPECIFIC REQUIREMENTS There are no known area specific requirements for this site. SPECIAL REQUIREMENT #2 FLOOD HAZARD AREA DELINEATION This site is not located in a Flood Hazard Zone SPECIAL REQUIREMENT #3 FLOOD PROTECTION FACILITIES There are no Flood Protection Facilities associated with this project SPECIAL REQUIREMENT #4 SOURCE CONTROLS This is a single family residence and as such does not pose any significant threat for pollution. No Pollution generating activities are planned. SPECIAL REQUIREMENT #5 OIL CONTROL This is not a High Use Site. It is a single family residence. The minimal amount of oil drips on the driveway will be treated by the dispersion over the grassed lawn. LL MANAGEMENT LLC TIR Page8 of 12 AE 17-28 King County Nap `33603 t� 6625 ti _ r LQ King County Ylcf �-a., ,✓C:ae,fwa.nheasffi¢er.s,M Ktt. vr.��A/+.�'aaxiwf .-=� v N,.., sa w T waK ,MT �af¢�n aw! r,4s,, .Y at• a.l�t •,e+. W Cwy kb •a 4I,W 4 Wa „i»,r a�va :Rk�a+wna+.s-+ • w�M �,!!. +nv�vn:��n� .i'� GIS CENTER .r✓"t�rcao¢p gvn¢nc mzim o'vrs Wu•[i wa ar�zo:; wQ= LL MANAGEMENT LLC TIR Page9 of 12 AE 17-28 ❑ TEXT OF INSTRUCTIONS Your property contains a stormwater management flow control BMP (best management practice) called '"full dispersion." Full dispersion is a strategy for minimizing the area disturbed by development (.e., impervious or non-native pervious surfaces, such as concrete areas, roofs, and lawns) relative to native vegetated areas (e.g., forested surface) together with the application of dispersion techniques that utilize the natural capacity of the native vegetated areas to mitigate the stormwater runoff quantity and quality impacts of the developed surfaces. This flow control BMP has two primary components that must be maintained: (1) the devices that disperse runoff from the developed surfaces and (2) the native vegetated area. Dispersion Devices The dispersion devices used on your property include the following as indicated on the flow control BMP site plan: ❑ splash blocks, ❑ rock pads, ❑ gravel filled trenches, ❑ sheet flow. The size, placement, composition, and downstream flowpaths of these devices as depicted by the flow control BMP site plan and design details must be maintained and may not be changed without written approval either from the King County Water and Land Resources Division orthrough a future development permit from King County. Dispersion devices must be inspected annually and after major storm events to identify and repair any physical defects. When native soil is exposed or erosion channels are present, the sources of the erosion or concentrated flow need to be identified and mitigated. Bare spots should be re -vegetated with native 4l24R016 2016 Surface Wawr Design Manual —Appendix C C-46 LL MANAGEMENT LLC TIR Pagel of 12 AE 17-28 SEC PION C 2 FLOW CONTROL BMPs 11 FIGURE C.2.1.D 50-FOOT DISPERSION TRENCH WITH NOTCHED BOARD 11 1'- 0 MIN. A —PIPE O D 11-0 MIN 50' I LLL--- ■ NOTCHED GRADE BOARD PLAN 2" X 2" NOTCHES NTS 18"OC' GALVANIZED — BOLTS 2"x12" Z GRADE BOARD Nr„p 4" X 4" SUPPORT POST 6" MIN 4!24,2016 11-0 MIN END CAP OR PLUG FLOW TO SECOND DISPERSALTRENCH CLEAN OUT WYE FROM PIPE IF NECESSARY MIN 6" PERFORATED PIPE LAID FLAT/LEVEL TYPE I CB TYPE I CB W/SOLID WISOLID COVER (LOCKING) COVER A INFLUENT PIPE (MAX DESIGN FLOW <0 5 CFS PER TRENCH) CLEAN OUT WYE FROM PIPE FLOW TO OTHER BRANCHING CB'S AS NECESSARY �181, OC-� 42"1� PIPE O D 20°b MAX, 2" GRADE BOARD MIN ' SEE NOTE 5 NOTCHES' 'FOR WATER QUALITY FACILITIES, SEE SECTION 6 2 6 1, OPTION A FOR NOTCH DIMENSIONS AND SPACING FILTER FABRIC TRENCH LINER olo CLEAN (c5% FINES) 1"WASHED ROCK MIN 6" PERFORATED PIPE LAID FLAT NOTES: 0. 1 THIS TRENCH SHALL M CONSTR UCTED TO PREVENT POINT DISCHARGE AND/OR EROSION 2 TRENCHES MAY BE PLACED NO CLOSER THAN 50 FEET TO ONE ANOTHER (100 FEET ALONG FLOWLINE) 3 TRENCH AND GRADE BOARD MUST BE LEVEL ALIGN TO FOLLOW CONTOURS OF SITE SECTION A -A 4 SUPPORT POST SPACING AS REQUIRED BY SOIL NTS CONDITIONS TO ENSURE GRADE BOARD REMANS LEVEL 5 15% MAX UNLESS OTHERWISE EVALUATED AND APPROVED, SEE SECTION C 2 1 1 C-42 '_U 16 SUdace Watu Dc m Munual — AppenJia � LL MANAGEMENT LLC TIR Pagel of 12 AE 17-28 ❑ TEXT OF INSTRUCTIONS FOR NON -VEGETATED PERMEABLE PAVEMENT Your property contains a stormwater management flow control BMP (best management practice) called "permeable pavement," which was installed to minimize the stormwater quantity and quality impacts of some or all of the paved surfaces on your property. Permeable pavements reduce the amount of rainfall that becomes runoff by allowing water to seep through the pavement into a free -draining gravel or sand bed, where it can be infiltrated into the ground. The type(s) of permeable pavement used on your property is: 0 porous concrete, 0 porous asphaltic concrete, ❑ permeable pavers, 0 modular grid pavement. The area covered by permeable pavement as depicted by the flow control BMP site plan and design details must be maintained as permeable pavement and may not be changed without written approval either from the King County Water and Land Resources Division orthrough a future development permit from King County Permeable pavements must be inspected after one major storm each year to make sure it is working properly. Prolonged ponding or standing water on the pavement surface is a sign that the system is defective and may need to be replaced. If this occurs, contact the pavement installer orthe King County Water and Land Resources Division for further instructions. A typical permeable pavement system has a life expectancy of approximately 25-years. To help extend the useful life of the system, the surface of the permeable pavement should be kept clean and free of leaves, debris, and sediment through regular sweeping or vacuum sweeping. The owner is responsible for the repair of all ruts, deformation, and/or broken paving units LL MANAGEMENT LLC TIR Pagel of 12 AE 17-28 4 UTY OF Federal Way April 27, 2017 LL MANAGEMENT LLC Nazary Ivanchuk 24913 104" Ave SE Kent, WA 98030 RE: Permit #17-101601-00-SF; L L MANAGEMENT LLC, S 337`h Street, Federal Way Dear Mr. Ivanchuk: CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cityoffederalway.com Jim Ferrell, Mayor The Public Works Department has reviewed the drainage and site plans for the residence proposed on S. 337th Street. The following items must be completed before a building permit can be issued: Street Frontage: 1. As outlined in Federal Way Revised Code Section 19.135.030, the applicant is required to build improvements along the property frontage on S 337th Street for a type `W' street, which requires 24' of pavement, 4' planter strip, and 5' sidewalk within a 52' right-of-way. A right-of-way modification request may be submitted to reduce or eliminate this requirement. Please see the enclosed information. 2. A right-of-way permit will be required for the driveway connection to the public street. Please contact the permit desk at 253-835-2725 for additional information. Storm Drainage: Please refer to the 2016 King County Surface Water Design Manual (KCSWDM), Appendix C, for storm water design requirements and options. The following items must be changed and/or added: For the dispersion trench, show setbacks from the building and property lines. Dispersion trenches must be a minimum of 10 feet from any building and 5 feet from property lines. Orange construction fence (or orange silt fence) must be provided along clearing limits. Provide a detail of the pervious concrete. Please submit three revised drainage and erosion control plans for further review. If you have any questions, please contact me at (253) 835-2732 or at ann.dower@cityoffederalway.com. Sincerely, G Ann M. Dower Senior Engineering Plans Reviewer AD:mt enc: Right -of -Way Improvement Modification Request cc: Cole Elliott, P.E.; Development Services Manager Becky Chapin, Associate Planner pf/ad df 17-101601-00-SF \\CFWFILEI\Applications\CSDC\PROD\docs\save\144958_75775_25161147 DOC