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Home My WebLink About97 0442 'I ..: ".-.~"->'-'~~'~-~""""'''~-'"-~=~-~''''--~~-''''''''''~~........---~-..----..~<~~.~-~-~.-..----..,~~-~~ ( " BREMERTON PERMIT CENTER 286 4th Street, Bremerton, tJA 98337 Phone: (360) 478-5275 FAX: (360) 478-5278 GRADING PERMIT Job Addr: 4949 KEAN 51 Location: 4949 KEAN 5T PaT~elNo: 2124011-113-2004 >iF Permit No: 97-0442 Status: ISSUED Appl :/ed= 07/~~~V199'7 I sSI.,I(;~d: 10/07/1 tyl'n Expires: 04/05/1998 I I ~' , I I I I I I I AppI 1. c:r:mt = BALOW 1: N CRA I G WESTSOUND ENl:i11NEERING 876'.<:3770 ClwT'u(:lr: PAI~R r~Ol)/Ll:NDA 4949 KEAN 51 BREMER10N WA98~12 Cont r r:~ct qr : 'c:lc #=Exp: DeU3C: Gif<ADING PHm:rT( 1600 CUBIC YARDS) FOR FUTURE BUILDING SITE ********************************************************************************************* Cubic Yards * Pe~rmi.t Fe€~fl: 126),,00 Teftal Calculated FE'~e: 1{;)S..50 ' ],,600.00. ,* Plan Ch€lGk Ft:le~s: :~O"OO . . AdcHt:lcmal Fees: "bo * Other Fe:leli;I::9,,50 Tc)tal Permit Fe€H 165.~:;() , *****************~*************************************************************************** i I I;' This permit shall become null and void if the building or work authorized by this permit is not commenced within 180 days from the date of such permit,or if thiS building or work authorized by such permit is suspended or abandoned at any time 'after the work is commenced for a period of 180 days. NonCE - It is th~ responeibil i tyof the permit holder ~ not the Ci trof Bremerton or Building Official to see to it that required inspections are made. The permit holder must notify the Building Official when ready for 1rlspections" Failure of the permit holder to notify the Building OfficJ.al of required inspectioTlsmay result in. the stoppage of the work unt.il such time that the permit holder can substantiate to the building official that the concealed work meets or exceeds code requirements, Any demolition, testing, o:rfinancial burden s.hall bebornedirectly by the permit bolder, Failure to substantiate code requirements will indemnify the City against any and all responsibility or liability connected with the construction. . rhereby certify that r have, read and examined this permit and know the ,same to be true and correct. All provisions of laws and ordinances governing this type of work will be complied with whet~~r specified herein or not. The granting Cif a permit does not presume to give authority to violateor.cancelthe provisions of a~Y ot r.st . ...cu:-loc 'la~.. refat.L gconstruction or the, perform~nce of construction. . ' Slgnatu ._____' __. . _ ~~--~--- Date.____~~~~SZ_~___-~__-_____ I cer ifY~~alll axe t .". . requirements of theE/tate contractor's ~egifltration law, under Sect on 3, Chapter 126, law8 of 1ge7 , .. . Si iatUn'!f . ,. , '''( . , ' -~-~=--~=-~-~=~=~=--=~===~-~~~~-~~-~._~~~~~--.~--= , . '.: . ,Date:_~~_~~~~~__~~~~____.___________ , . ** t***********-)('******'***~(pi,~'* . ,....' ... P~~rmi t; Ce:mter"....Approvt)'~d B : ..,,,,,,... '.' ,..,,,,,.',,,,,..,,,,....,.... , -'. /' i /. '2 97: DatfH '.. -, .,........., . , , -,.:"-O;"",,,..,,w..,,.,.. ....."......,"'""'.. ., ....,.~.- BREMERTONPERMXT CENTER. 286 4th street.. Bre1f1Brton, UA 98337 Phone It (360) 478-5275 FAX: (360) 478-5278 , ,1 i ,j ~] Job Address: 4949 KEAN ST loc~tion~ 4949 KEAN ST Assr Aqct No= 2124011-113-2004 Building Permit No: ~::;t l:'it tJ.'f.~ ~ J fl~f!.~Uf.)d: E;:xplrf!.'fi~:: I i I;;> '7 ,",{l 4 4. t.:~ I '1'1"'("\ 11''''[') ,l"::l,,:),, :::, " "I 10/07/199';. 04./0b/199ij r HEI:JU I 1='<1:::'0 INS P€ C T ION S I, 1 ;1 . ' " , . " 1 ')H~:)t:)t .)t'* ,)t'* ,*1(''*.)t ,)t *.)t * ,)t.)t ,)t')H~1(, * ,* ,)t*,)t,)( * ** *,)t*,* ,)t * ,)t* ,)t ,*.* ,*,)( "H.: *,X * ,** **,x..x,,* ,x* ,x,)t * ** ***,)t,)t * ~H~ .)t.)!;, 1(':* *.~ ,* ~ ':~"I:::::::~"~':~ ~Jl:.J,~ ~1LlBt bE~ )''' t~C:t:ll;;H'l it. E:~d b~ t hI::! 1,Jl:l~?h:1. r'1!;;rt or:! AIY.H;~(:)C:1. i!i t ], (:m (:li'~ Bu:l.:I. d i n~;l Of f:i. c :1.;1 ~:~I;'~~:,(;; :~: N!::;f"~,: ~L~~~::"bt:;l..:: Y' el;;l :1, ~~~; f;~~; f!~d ,. ~ 1 t ~l '" '~; t';t:l ., S:: a'~: f~)" Q'I:: : ~A.,!. 4'7':~"-49?,...1" I ~~d /jf. ~lA" ~~tfJH!! ut k/A fJtjf~i," t~f LAiibof liH1cJ lndwfltr h,$ t,1~,.J I I f.,,, AI "1"11" 1"~v'."'m""v"I" ("'T'l/fr' ", 'I" ~"'.r") 11'''''."1'1'' t'l I") 'I' <"'I" v' 'i ,,,.4,, . 4.-7' f.'J, "',,52::35 ," ,::. '" "" .... :::) I ,;.> ,,:. I 'n' ..", ,;,>r.'r' '" ,;:'t:." , ' .." ,:> " J, ,,,' t, ~ It8m~ 01000 EROSION CONTROL Item: 02800 SOILS COMPACTION Item: 02700 FINAL--BlOG Dept= PL~WORKS Dlvision= pept: TESTING Division: Oept: BlOG Division= I I ALL INSPECTIONS PERFORMED BY THE CITY OF BREMEHTON MUST BE SCHEDULED THROUGH TN I~~I~.M'I'.I" ~FN"I"I=I~ (?L(')') 4'7.0-~?'7"~ f.... "\ . . "I _".' '''' '\ ,. ";) C,) . (,' "..) ,ot", 'OJ tI *M'*M*M*' **, "***M****,**MM***********'*****M******M******************************- ~r;~~iu~ ~,~e~.h~?' '_~.."m..._.. D a. t f.~~ ~ /o/7Jc::; .., , ,..,.",u",,,, ""_,,,. ","''''""",,,., " ",.... ,,<., "",.,.",,,,,,.....,,,,, I I [. l I f I I. . I. I I I r .. ~ ~_.........:................'---.....;,.___.-=-__.......,...........-_.:.--~~~......-........~~___..........,~_.......-~.~.-.__.'---"'""'---'>-d".'--'~~~........~_ r ','~n" ":"'.'...cc-........-.'. -.-._n.~_~__--~_.__.-~---:l l j I ,I :::" ::::: I:::: ::::: ::::: ::::: I:::: I:::: I:::: :.:::: I::: I:::: ::::: ::~~ ~~: ::::: ::::: ::::: :~:: ::::: I:::: ~::: ::::: I:::: I:::: ::::: ~::: I:::: ::::: :::::.::::: ::.::: ::::::;::: :::: Ii::: :::r. I:::: ::::: ~::: :r.:: ::::\ :~::.::::: :r.r. I:::: :r.:: :::r. :r.r. :::: ~~r. I:::: I:::: I:::: I:::: ::~: ::::: :::~ I:::: I:::: :r.:: ::::: :::: r.::: :~:: ::::: I::;: ::::: I:::: ,,::: I:::: ::::: ::::: I:::: I:,,: ~::: :::" 1 1::'1::)1:::' M I:::' j;:} "I" (''IN r.:)f.::'I::)M 'I' '1" ("I::~N"I"I~:'I::) I ..) '\ .". .,,, '\.. I ,t<. '\ '. "I,,,, .,.. '\ PERMIT CONDITIONS "1 P(:~)r m:1. t N01: 1':;7 "'''044~::~ . ;Pifi9f~~ : 1. :==::::=====:====:~:====:~===:=====l~~:==:=====~=~~:======:~==:==::~:=:==:==:====~:=:=:=====~==:~::::=:~:~::~:~~~= Job Address= 4949 KEAN ST Appliedl 07/23/199j Af:3*:.rrf.1l:::ct No:: ~:~~ 1 ~;;~4011 '''''], 3. ::3''''';':~004 APp'('ov~~d I 10/0'7 1 199'~ I ' t' . A l::l A .:~ t "f:'" ^ N ('" "I'. ',I' i',", f',:',' \, ",',",~ (',',j. "'J '" (',) / (,') "" 1 '" (::lC::J'A ""CiGlif; :I. eiT'j" 0'1' 7 "1"7 \, :::,1'''1. .::1'. h ~".. .. ,I /.! 7 1.1 I I I 1 . .. [ I f t~ I I I, I App.l. :I,l:::r.mt I BALJJWIN CF<AIG ClWT'HF.1r I, PAJi<I:< 1:<00/1... I NDA C(::mtnH::t f.)'(' II DeH~~C,(' :1. pt :I..on = GRADING PERMIT (1600 CUBIC YARDS) FOR FUTURE BU :l: L"I) :I: NC:;j S I '1"1:::: I Cond:1. t; j, Cln*:il : 1~ B U :l: L DIN G SEPAf<A'lE PEfm 1 ''I'' I:~E::(;~U IHE::l) , FON 1:~I::::'rA:I: N I NG WAL"L,S.. ~;:~. E:: N G . I NC I:::: E: I:~ :r. N G I ' U ''I'' I. L, I "I" I I:::: S A' "'f:)(")'V 11")r:::' (':.":l'>A:f.:' 4::'~Mr:), 'I':N(":.' rJf,:)("l("'I:~'I")1 11::)1:::' A" NY" V N(")"I"("'l"l WI:::' '[ l:'l f')I:::'''I''A" '1'1 u f ,- ,_ , ",," ,:.4 "\ ,;} ~.;)r"t I' "".~ .~ r r'" "I",." ,. "\,;....., , J", "..It" r""., '(, L "", ., '''I B. STORMWATER QUAL:l:TY MON:l:TOF<ING SHALL BE REQUIRED PER THE "STORMWATER QUALITY MONITORING PROGRAM" PREPARED BY WEST SOUND E:NG INE::r::::R I NC<;j AND DAl'E::D SEI~')"I"l;:::MaEf< 1 (197 C" STORM DRAINAGE REVIEW AND INSPECTION FEES REQUIRED ~1~~36()'.. O() RIGHT-OF-WAY PERMIT ISSUED 10/7/97 - PERMIT ,g032 '1 I ~I I I . Pf.~'('m:I.'~ 1'''I.t:), "f.~r~ t~ ~;:1. \;;lni:'11~ 1.1 Y' ff,i . _t " , 1. ~ ....OJ/. .., ~. "":,, ,~"",~.....-.c.,. ..,..."",,,..... .nl"'Iu,,~ /.,Q J..,./a.., U~~G==~'7'''~=~-===~ ""'""""'--~--......._~........~'- I J j l . . . . 1 ,.'''::-C~",;,:-.-::.;_,-_i,_ __'_ __,_.____~.____~__._ ..,.J .'" f " B'R'E;M;ERT,ONBUI:lOIiNG DJ!!PA;RTMEN'T Inspection Report Scope of work: ~dc.fress : Owner: Contractor: Grading pe:rmi t , 494~_KeQll\,St. Rod!:t.inda'parr, Cl:&~ST Baldwip ... (future bl(jg sH;e Permit Number: 97-0442 . Wel;it,Sound J5lnq;neering Phone: Phone: . 876-:}770 , .' l'ns,~etibfl: ,eardlap.f1to'tted 'pIIQM Ol"l site Footings: required steel plae-ement FGotI'ngs: Jlequif'ed fitdth& ~th Bearing soU (soils anatySiS if applicable) . FOUNDATION ,,' SetbackS Walls: required steel placement ,. - - - , 'Walls: ,1iliq,u.l'r<<t size Specialinspecfor (when applicable) COMMENTS: r .. FOOTINGS APPROVED:, WALLS APPROVED: FRAM1NG Plumbing & mechanical approved Floor jOlSts and beamsJProper clearance to earth Foundation vents Anchorbolts: nuts & washers in place Floor joists: size & span >- -'- - . N()tehi~& dri:l:tmg': joists & beams, stu4ls Exhaust fans: where required . .. ". ~ ~ WholeJl1o~se taA,Olltsi.de air ifl1takes ;et~h bedJit:)(;},nl, Range hood -- - - Nt ve""t termmatlons: windows ,& ptOp~ line - - .~ ~ >.' -- Windows: meets egreSs requirements . . WindowS: safety gla~-e~ where required" Stairs: headroom clearance .Fireblof;ki~g: w$II to ceiling, furred wails9very 10' 1! --- Fire blocking: tubs/shoWers' tire blocking: stuff holes top & bottom :plates Walt bracing irusse~: specs, bracing > ---.- Attic ventilation Shear nailing' l.~ 'Eleetrical ap,Pfoved, Cra~ spae~ access (min. 16 X. 24) Positive connections posts & beams 'Posts properly supported Mudslll: treated material " BeamslgiTd~: s:ize&s'pa;~'. . . Smoke detectors: all required locations -. .... E~aust fans 'insu'lalted,: uA:&o<.nditiiGl'led spae.til Fans terminating directly outisde IOryerexhau$t veh,t Fireplace combustion air Windows: ,pI'o.p,er 0 valve Ceiling heights stairs: rise & run; proper width - - . ,- - ~ . Fire blocking; stairs, soffits,lowered ceil1ngs Flreblocking: Uds In void spaces, shafts 'Sheetrock backing.' Rafters size/notching . AttiG acces' Wan & roof sheathing .' eUil!!li'ng d,rti-ed lin _ " COMMENTS; APPBOVED: J.nsi:J1~tion: proper R'value Ins~Jation: va,por barrier , ,., : 'Pelil!~ra'ij,on~ :catll\(.~a's relij;wiilfed 6 mit black poly in crawl space EN,ERGY CODE COMPLIA~CI;, Insulation: 'proper fastening .. Sottom plates caulked to floors IE4eQtvic~I boxes, '9as~eted: orcll\\trked ~ ~ t. . COMMENTS: . ~ 4- .- --- UNDE:R FLOORlFOUNDA TION IN'SULATlON APPROVED: W~t.Jl'I.NSiUL.A'HOO APPROVED':, CE1UNG t:N5UtATtON: APPRO~eO~ . l{t,' it' ',....~;._~, . I . ~ j/ MECHA;N!ICAl Appliance location and access, proFler support Appliance clearance to combustibles ..... , Venting: clearance to comb,tjstibles Venting.: ,size & suppo.tt ",. ., Vent termination - , Combustion air J Ducts: size & support - Gas pipe under test .. ,. Gas pipe: size & support ., Gas pipe: underground min. 12;; below grade . _ .. J Gas pipe: Within 6" or underground-'coated Gas shutoff within 3' of appliance " -- " Gas logs: safety shut-off Gas logs: damper permanently open Woodstoves: EPA certified Woodstoves & fireplaces: Tight4itti,ng doors ,: Woodstoves& fireplaces: pro;per hearth Manufacturer's specs on site - ,. Chimney liner: when required Chimney: separate flues when required ,- , -- l- COMMENTS: GAS PIPING APPROVED: OTHER APPl1ANCES APPROVED: FURNACE APPROVED: - 'DWv & water piping under test DWV: proper grade OW\!: proper sizing -. , DWV:proper drainage fittings where required DW\I & water piping: proper support' DWV: required eleanouts Vent termination All fIXtures vented properly -. u. Wl!\Itersupply: proper si~inlt Shut-off valves on all fixtures Water heater: gate valve on cold water supply Vacuum breake'rs: where required - .- - We_heater relief valve draln to ootside ,. Water heater: 'siesmicstrap ---- R-10 pad under water heater when required ' Water-piping insulated as required Gre~e trapsJiflterc9flto,rs: where required . PtoperindJ'I'eot wastes: w.he~e required ,.--. - PLUMBING COMMENTS: PLUMB.lNG GROUNDW~K APPROVED: ,PlUM&fNGROUGH-'iN APPROVED SHEETROCK. nails 8" ~tc. vertical: plalll& screws-12" o.c. horiz. ptane (1/2") 24" o;c. framing $crews-12" o.c. vert. plane (1/2") - 24" O.C. fran:Uhg, ., , screws-12" o.c. horiz. plane (5/8") - 24" o.c. franiing screws-12" o.c: vert. plane (5/8") - 24" o:c. frafY'iing Oraftstops where required Waterboard where required (not on ceiling) Proper fastening: nails-]" o.C. horiz.plan.e ~ - - . - " - , Prop~ fastening: sCfews..12" b.c. hofiz. pl~ne (1/2") Prop.er fastening: sCfews-16" .o..C. vert. plane(1/2") -. - - - - ..... -. - . Proper fastening scrt'M's-12" O,C. horb~. plane (5/8") - , Proper fastening: screws- 16" o,c. vert. plane (5/8") Area & occupancy separation warls Usable space under stairs (5/8" required) Corridors [e. _ COMMENTS': . -.". SHEETROCK APPROVED:.. . , Energy cOd'e,~equlrri&nts met, exhatfs1 JaM's Garage/dwelling door self closing solid core _ " I. ___ .___ H.andrails&gllJ8f(trails, as ireqUired Exit signs When required Occl;J~antload posted when B:ppf.lcable Wood siding to earth separation (6" . ,Radoorncmitor wheflt iequired FINAL " 'PIUmbirlfl' & medha:nlcat Smoke detectors where required' ,Fjre rafifigs maintained Emerg~ncy lighting when required -- - --- Building weathert~ght 8uildingAddress posted 'C" COMMENTS: FINAL APPRO\II;~___;<? /L?::... '2 - '7 '/ _ _ 0 ~_~ 'r) :, ~ J -- ~.,t'-'17 - I, i' ... ......................'..'...........011'.......'."....'....:.:....,.,.......... ........ .............. ., ........... ..........., ........ .,.. ." ..... .... ,_.... .'.. .", ... . . ..... ;;.:.:::;;;;::::::':::::::8. . U. ., I. :m::.. . :. ,: . .:G:. :.:::e: BIll' :. '.': ')'(1::0':' ':. e.. II';; 'GI":. '.:BI. :0: '11: ;;:.::::;;:..;;.;;;;:.;;:;;: ~ ; .:;~:::~;i;~~~~;;;;;:;~. . : ~. .~ ~; ~:: ~ :~ :~:. ; :" :;';~ . ..;- :; ;:.} ~:; ~::;~: :; ....; :: ;.. . ~~:;:. '~:. :.: ~ :; ~. :::::;::;;;;::::;;;;;:":;;;: ::. ::: .;:::::.;::::::::::' .:.'.::':' '.. :' ':':-:. ::.' :::: .:::: .. ....: ': .~: .::::::: . '::::' ':::: . : . .. :.: ':. -',: . :. . . : :.: :: . .::::::::::':' .. "::::: . ... .......... . .. ..... ...... ..0. ..... .... , . . ...... .. _,.. . . .. .... . . ...., .... . :':::::286i4di:sfr~!:!:~~~~fffiri~!~A::!:983.37W::!::i:~hri~:.(36o)1:47~~5275::i.:FAX:!:(3.60)::478~5.278: .:...::: APPLICANT: DOWNER 0 CONTRACfOR [2J OTHER: Consu/~+ SITE ADDRESS: 4"4'1 K"a.~ ~r<e..-t OWNER: 12C>d ~ LiY\J~ ~'(Y" ASSESSOR PARCEL #: 212401 - I - 113 -"Z 004-- ADDRESS: S) C I K~~ 51-. I ~~V\.'wt49P;)/z.. CONTRACfOR: ADDRESS: CONTRACfOR LICENSE # CONTACf PERSON: C . EXPIRATION DATE: CONTACT PHONE # ~~-3770 ..... ~c:... D SFR D DUPLEX 0 MULTI-FAMILY D BUSINESS D OTHER: D SIGN D DEMO D MOVE BLDG. D MOBILE ~ GRADING(yds): 1 Co 00 C.''1d;~ o NEW D REPAIR D REMODEL D ADDITION D OTHER: D SEWER D SEPTIC INTENDED USE: g"f..?tIIN'5J ON of -r J.l1C:. /J/s PL Ay J4.1-EA FoR. lv-H ~I..E S 4t..E. c,A~S. NATURE OF WORK PROPOSED: ~in~ ~~In,) IO/],-'\\~) ~pl drai"""1D-) tu.iJS~l"n.r ru-IJ i 1/(.(l+1ina.....it.(\ i""~,..Ne.~+~. . SQUARE FOOTAGE: Dwelling: N A Garage: Decks: :::'::{:NALUAnONr::(:::WiEUPMNJmVIEW:FEE:~~~.j~;:=;~~~::~~:f~::HSURCHARGF.S::::iH+!: t,://H:ro1':ALtFEFS::::::::::: $ $ $ ENERGY: $50.00 $ STATE: $4.50 CITY: $5.00 'Applications for which no permit is issued within 180 days following the date of application shall expire by limitation, and plans and other data submitted for. review may thereafter be returned to the applicant or destroyed by the building official. The building official may extend the time for action by the applicant for a period not exceeditlg 180 days on request by the applicant showing that circumstances beyond the control of the applicant have prevented action from being taken. No application shall be extended more than once. In order to renew action on an application after expiration, the applicant shall resubmit plans and pay a new plan review fee. I hereby certify that the above inftnnation is correct to the best of my knowledge. APPliCANT'S SIGNATURE: ~~,.." bpapp.doc rm-!4/23/97 DATE: 7 !-zo/Q7 ~ 'IL STORM DRAINAGE REPORT PARR MAZDA (Paving Expansion & Phase-I Storm System Retrofit) ROD PARR 5101 Kean Street Bremerton, WA 98312 (360) 479-1353 WESTSOUND ENGINEERING, Inc. 217 SWWILKlNS DRIVE PORT ORCHARD, WA 98366 Phone: (360) 876-3770/ Fax: (360) 876-0439 . . . Project No: 684 July, 1997 Je TABLE OF CONTENTS: Section Description Page No. 1) Project Description 2 2) Existing Conditions 2 3) Proposed Conditions 2 4) Up-Stream Drainage Basin 2 5) Downstream Analysis. 3 6) Hydrologic Analysis 3 7) Water Quality 4 8) TESC 4 9) Summary 4 Figure Description Page No. 1) Vicinity Map 1 2) Basin Map (USGS) 5 3) Existing Site 6 4) Proposed Site 7 Appendices: Appendix - A Hydrologic Analysis '< 1) PROJECT DESCRIPTION: The purpose of this storm drainage report is to address the storm drainage issues related to the paving of Phase-II and storm quantity and quality retrofitting of Phase-I. Phase-I was approved for construction back in fall of 1990 and is currently being used as a car dealership. Phase-II is the site adjacent to Phase-I and is Lot B of City ofBremerton Short Plat No.-05-90 (B-182). The current'proposal is to pave approximately 45,000 sf (gravel & asphalt) of parking area. For the purpose of this report, both Phase- I & II will be treated as one site for storm quality and quantity calculations. The project site is located in the northeast quarter of the northeast quarter Section 21, Township 24 North, Range 1 East W.M. in the City ofBremerton, Kitsap County. The site is situated in a commercial district and is bounded by a car dealership to the northwest, Minder Meats to the southeast, Kean Street to the northeast and undeveloped property to the southwest. The owner of record for the site is Rod and Linda Parr. 2) EXISTING CONDITIONS: At present, Phase-I is developed with approximately 70% impervious surfaces. Phase-II is open area with grass covering. Both phases has steep slopes to the southwest with both deciduous and conifer trees. The ground slopes from the south and west of the site towards Kean Street. There is an existing storm detention system for Phase-I that was designed and built in 1990 using the City of Bremerton 1980 guidelines for detention. The system provided 65lf of 6' diameter storm pipe. 3) PROPOSED CONDITIONS: Approximately 91 % of phase-II Will be impervious at completion of the project. Currently the proposal is to surface 22,000 sf of parking with asphalt and another 23,000 sf with gravel. The overall percentage for both phases is approximately 83%, which includes the expansion of impervious surfaces behind both phases for a total impervious area of2.25 acres or 98,010 square feet. A storm detention system consisting of underground pipes will be utilized to handle the quantity issues and a Vortechnics Model-3000 stormwater treatment system for quality. This system will comply with the current Department of Ecology Stormwater Management Manual for Puget Sound for oil/water separation and stormwater treatment. 4) UPSTRE~M DRAINAGE BASIN: The upstream basin consists of undeveloped areas of steep slopes to the south and west of the site, Projects that will be developed in the future within the upstream basin areas will be required to provide detention storage. The upstream basin area based on a review of the USGS quad map . ~~. is computed to be 0.9 acre. Due to the size and nature of the basin, this area will not be accounted for in the storm analysis. City records showa a storm conveyance system in Hanberg Street which is a vacated right of way. This street was located in the back half of the project site. Derek Skanes, City of Bremerton, indicated that this is an abandoned storm sewer. Past Phase-I construction and the ADA Engineering record of survey (ROS) dated October 11, 1990 support this. There is no surface evidence of this system. Any portions of this system still on-site will be abandoned in place. 5) DOWNSTREAM AIltAL YSIS: The downstream system for the project site was walked on July 9 during periods of heavy downpour. Surface runoff leaving the site is collected by the City1s conveyance system at the entrance to Minder Meats. The 15" Cfv'fP from the on-site detention system ties directly into the Citis conveyance system in Kean Street. Runoff continues within the pipe conveyance system to Rodgers Street, then east in Rodgers Street to AutoCenter Way. Flows continue south between the storage site and the toe of AutoCenter Way embankment where it is intercepted by a 24" Crv1P pipe which crosses Werner Way. The pipe daylights in a ditch between the on-ramp to SR-3 and Oyster Bay Avenue. Upto this point, the runoff from the site has been in a closed conveyance system. The ditch continues along the highway towards the City of Bremerton Sewage Treatment Plant, where it is intercepted by a 42" storm pipe. It flows through the plant and eventually into Sinclair Inlet. The potential for a flooding problem downstream was observed at the entrance to the Minder Meats where flows are directed to Rodgers Street. Ned Lever, Ctiy ofBremerton, has indicated that the City will be upgrading the system in this area to solve existing conveyance problems. HYDRQLOGIC ANALYSIS: -Soil Type: The soil type as shown on the Soil Survey of Kit sap County Area, indicates a Alderwood gravelly sandy loam. This soil corresponds to a Type" C" soil as defined by the SCS. .,.Precipitation: The rainfall data for the project site are as follows: 2yr - 3.0" 10yr - 4.2" 100yr - 5.8 " for a 24-hour storm event. -Existing Basin: The site is assumed to consist of 4.8% or 0.13 ac or second growth (steep slope areas) CN=81 and the remainder as meadow/pasture with a CN=85. The average CN value is 84.8. This is a relatively conservative assumption based on the fact that phase-I of the site is roughly 70% impervious and phase-II was compacted fill with sparse grass prior to the City's adoption of the Department of Ecology Stormwater Management Manual for the Puget Sound Basin in 1994. The longest flow path starts at the south comer of the site and flows towards the proposed entrance for phase-II. For this analysis based on a visual inspection of the existing topography of the site, the flow path is assumed as follows: -76 If Sheet Flow, S=34% -224 If Sheet Flow, S=5.2% -82 If Shallow Conc. Flow, S=5.2% This flow path is not the existing flow path at the time of Phase- I construction. This is the flow path after the completion of Phase-I and the portions of Phase-II was graded. Please refer to the Pac-Tech Engineering, Inc. storm drainage report dated July 13, 1990. Using the above information, the existing peak runoff rates for the 24-hour storm event are as follows: 2-year 10-year 100-year 0.70 cfs 1.26 cfs 2.03 cfs -Developed Basin: The developed basin draining to the detention tank consist of2.71 acres, of which 0.46 acres is pervious CN=84.8 (the average developed CN is lower than the average existing CN, therefore the higher value was used for the analysis). The remaining 2.25 acres is impervious (CN=98). This value is slightly higher than what is proposed at this point due to the uncertainty of the extent of pavement. The time of concentration for the pervious area is assumed to be 10 minutes and 5 minutes for the . . ImpervIous area. The peak runoff rates for the 24-hour storm event for the basin draining to the detention tank are as follows: 6-month 2-year 10-year 100- year 0.93 cfs 1.55 cfs 2.24 cfs 3 . 16 cfs -Level Pool Routing The allowable release rate from the detention tank will be equal to the existing peak flow rate. Since the downstream is a closed conveyance system, no SBEC Bl\.1P is proposed. The required storage volume for the project is 6873 cubic feet. This results in 245-lf of 6-ft dia. storm pipes. At present there is 65-lf of 6-ft dia. pipe, therefore an additional 185 If will be required. WATER QUALITY: For peak runoff for the six month storm event is calculated to be 0.93 cfs. Vortechnics Model- 3000 Stormwater Treatment System is being proposed to handle the water quality issues. The system will be sized to handle upto I-cfs for treatment, achieving the minimum guidelines set forth in the DOE Manual for both runoff treatment (coventional) and oil/water separation. TESC: A Gravel entrance and silt fences at the toe of the slope along Kean Street are proposed to control erosion during construction. If weather dictates, other measures such as straw mulch, hydro seeding or other Bl\.1Ps will be utilized. SUMMARY: In summary, the storm drainage system as design should be able to handle the runoff generated by the developed site and comply with the current DOE Manual in effect. The design will also bring the existing Phase -1 system into compliance with the current standards. .. s:;J - -0 -, 0 (0 Cl) ('"1 ~ ,.... en - 0'1 c::c A. - 0'1 c::c A. en ..... ,.... :E Cl) C. . c.... c:: ...... N W 0 9? U'1 ~ ~ A. A. -ci .... at l.D l.D i ....., x x -< )> --t VlCINfTY MAP NOT TO SCALE - - -- -~ - ----- ------------- ':-c .0 ~\I~)~~ _i;~ \'~~llm~~\\\ r> liN ((c ter 1" ~ ~, IT' II. L va "')' Iii' 'l-e 1 ,\ I h ,. I , r---. ,/1 \ _\ '~"'+-'.;;; ,..... .7''-T~.. \I7 ~ " \~< .....~.....:? )1<<< 0 ~ . ..~.. j' ':,.....',;'t'.) ~ .iLr. ..~ ..\ l :.....\,,::...~ . \.' ;.. .1':.'.: .'.d..':" ,........ II.. -llr..\....y;~.../.I/ ._' .. k I(~" \'ctti/7'>':_//~ '" .- - 18\ ~ ~.~' 0~ \Vn~~'" I Q~. \ I~ ..\~ ~O-.\I/~~.~1 q ;\... ' f ~~f/~~ I. II~~ [.,jt"::;\.f/.t r. :~.~.. .,.~... t-Idt ~_.. ~7 : ...y (( l ~. l"~ Y ~ u .' )\ I' "- \\ tl '=" ! {, " \'~ .. \ ::o~..... . ~" . .' <<LI '. Ii. ;"" ~ " / ~ I ~ ,. :...r-;. ~ ~U~'i\ ': ,.\ . ~ 1 ~~ ~\; ~- ~~~~\'ip~~+~~~:'~~.~' , ' \ ,~ \ ~ 'If^'''' \ J . "...- 'b-.... "'-:-' ~ I {1, . ' ,Ill .' .A' \. · ~ L-.1.':. ==-..:" &.'IlL -..-. . · \ '\ · i ~x)rE" /' ,:~~~ii,~:ftj~~ ~~-'='.' ~ \' 2 L U:;I:::::}' ~ 4b · "::._.!..'1 " ~ 1\\\'( A~ \ \ \ ~~~~trJk. ~~~ ~\ · . , l, ~'{\ ~ -L~') i' ~ ~~ I "IJI~ J,oJ ~ "jJ 0. 1 \---- .r ~\ :,J ~~), I. . :; I \. 1\ ~ ::1 '0 i-- \ (\) l t\ rr; ~. ': : : I ' b J UIf '7J; N '(.5; i." 'A' ., ,J f n f11lf(-; ; IV;' \ ./' ~t:'l ~ PF?(J rf}/)ih' l; ~f c \) \~rT.j 1\ ,0 ,,'i, .--=",./(Jtd.e~L'>Af(J~ \--'t? ",~ T\ v .".. ~ ~f~1/ ?J/I~ 01 I) ~~.- 2.. ..Y"' v <- ./ I' <:) \ \" · ') ~ "=~""~ ;f/"' 0/' /' '" /!~ '. ~ 1 ~ Ii>" ___ 7. ,,-? 0) \ '0 1 0\ ~ > <,,' , . ,Y I ~......-^\ .'. 1 ~ " V ./ :\' ~ (1 : : (f' ~"c · ~ \ '@ 0 ./ =-r-,," I \ : "~ .~ ') ... . .. .. \ "" I COO \ ,_ 7)~ ~ [i" . \ ",: ' () -II I l~ / I c:;.~ ~ 00 ,.!;~ {,,-:' ~ / 2~'~': ~ ,,0 ~ ~ ." '~~ c\ ) . II '"" =" ~61 - .. // 0 1/ '.' " I,.. ''''OUNO ENGI .Eo: RING II ,!!:I l/' ' .'211 SW Wlu<lNS OR. \ ~ ,v /(V I~~ ) ~\~!\\ ( ~C/.Y' rFrr OflCI-IARO. INA. 983661 II~' J ~\ / //'LJW.\ ~~ " _ ~~3fJj)816-'3710 / .... . I~A ' '/In,)!n ,.) ,'/ ,,'/1. . """,':!' " i'~;"'~) ...... -~\ 01 ~ "'y; N/1\.) ~ ~ \ ,~D~\_ ...~r.\ . \'V7/ ,>,:.... ......~ .,~~ X~3t5,li'i-\- . ~'" . ,.." "///// .." / ) ~ ...... ,"0 J 0 ~.. ('ll n rT CIl ...... 01 CD .I>. ...... 01 ( :4tPv [,'G~ fiR- CD ..:::.. "-' CIl ..... rT :::E: ('ll a. c.. c: ..... f'\) w 0 9? 0 9? w CD ..... r.o <.D -....J 3: 3: -< > -I .; .' ;-'" ...... ~AR~'Azo:A PAVING EXPANSION , DEVELOPEIf,SITE CONDITIONS " -', ~-._-' '-';':'> ~ ~~. T'I?!: 'C'r:llNf:f/AY P\!ll \,,1111 ~U,. i I.N~ ...,...,."" I"RO'tU T'Dt'OllMY CGlH&T. anKNa P\!ll DET.lI. tIIT.-% rOlt l!If'OIIARY aOIIaV 6m'!11TA1lCIl coma. ~I y ~} ~/. l Y WestSound Engineering Co> 217 S.W. 'HIla OrNe Port Orchlrd. VIa. ~ I'hcne 0;;0) &7!lr-3T10 r. 0;;0) &7~ ...,,,1,,,,,,.1 J06 Ho.~ ~...2.. rx 2 ~$ - - 1::1 -, o t,;. C"'l n- Ul - en CO A - en CO A Ul PARR MAZDA PAVING EXPANSION EXIS TING SITE CONDITIONS n- -N- , ~ C1J 0.. ~ c: ...... I"\) w o !J? .- ~ U1 co .- to to --J 3: 3: -< ):> --i GRAPHIC SCALE 1~ -. ~ ~,~ ..r -- (lN~ l_-T- WestSound Engineering ,I", I I" 217 SOW. Wba DMve Port 0rcIwrd. Wtl. ~ I'I1onls (.300) 81fir3170 l'lllt (.300) 87~ ,X)6 Ho.~ Sl1I'ia 2 Sl1T$ , , APPENDIX A Hydrologic Analysis -Existing Storm Hydrographs -Developed Storm Hydrographs -Level Pool Routing -Detention T ank:/Orifice Sizing -~sc. i\ttacbrnents , . '.?t1A'% L . 111'&.t:1L ~~ {;X\?i1N~ ~~O =-- -x ~ \ ~~ \Cj .:J'1 b8-t WESTSQ~~GtNEERtNG 217 fitI'I Wl......= DR. . I PuKf~WA ~741 (aeOl. 1Slf"F ~. /~.-r2~'0' [) \ C{).JO ~ 151>"L } G'~ \ Cll. <\,LI C\) .lL _ 5~BP -j:. -= {. Z J "'''- . , " lit " ~"1 n ...I.- S:>I L. "'" f' G - ..Art..DeR >Ntil>D gE.\ e;. " G" i g g _ _ b:",..M C N.f31>CeV-> qz..~ Jjj(l..b k;. ""'. \,;"Nc.. GOj'lO In ~.... . eN. e r; _ ~ .'-1'" ./6.s""'~ l.(.-s 10 <%' n\\'l>- srn; 6 "","j'I'tB.W ..h~ ~"D ~".1Y\ c..N 8 ~ \ ~~; ,_ A~'" eN, =: (.(o."3)(8f)+\..?$l!.1(..";;)] ! t...+1 '" 6 q.& ~ ~ ~ .,- ~u'Y ,rP,.'I'l;l'-' "toM"'A . . . -w~ ' 3.\)." v..~ "2"~, ~ ,O.~4 '1:". -- 0.11'I b.0~ , ');'\'1,.,.,)..) 4.'2. ,11\ ,r:;~ ~ ,~f'\- (:i}1:->;:;~), \ @ 2 ~Jt \ I~~IL: 160'11.- \lZ.~\...- ?~ L I -:;. ~ IF . L 1... -=> . ZZ4 \ F= <-1,.:;' g 2, \ F ~: 0 , :3 ';.8" It;, ~ I..c <;;nee?rFi.c. ,'f\l ,,::::__6,052.\_~ ff_..J - ' S.~ a . 0 5 Z'" PrSrtk-<"(;.;J C<.>-lc.- . ~. \ I" -;; 'Z. g . b \ f'J'. I~ \ .~ '€.Xl)! 2.- l(}. \,:>1 II:J \ ex<oT {C>o \ H\iD * - O."'H0 (,.tG Z..o3 \ ~'-i81 2 > :j-6-=f tfO ZG:b ,- \ \ \ \ l 2 g -pE~~ 2. yRf-e.tft1L t..'I.. /0 1\ 1/ .; ltD Ii ft G CcS.J ~ \! Cl L-, (<..-E) ~ \ \ -------- ------- -- -- . 7/22/97 7:15:3 am Existing Storm Hydrographs Calc. By: M. Myat ,r< ,; West sound Engineering PARR MAZDA page , ~ ltt --------------------------------------------------------------------- --------------------------------------------------------------------- BASIN ID: exist10 SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . . . : PRECIPITATION.... : TIME INTERVAL....: ABSTRACTION COEFF: TcReach - Sheet L: TcReach - Sheet L: TcReach - Shallow L: PEAK RATE: 1.26 cfs BASIN ID: exist100 SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . . . : PRECIPITATION.... : TIME INTERVAL....: ABSTRACTION COEFF: TcReach - Sheet L: TcReach - Sheet L: TcReach - Shallow L: PEAK RATE: 2.03 cfs BASIN ID: exist2 SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . . . : PRECIPITATION. . . . : TIME INTERVAL....: 2.71 Acres TYPE1A 4.20 inches 10.00 min 0.20 76.00 224.00 82.00 VOL: BASIN SUMMARY NAME: Existing Basin, 10y~., 24 Hour BASEFLOWS: 0.00 cfs PERV 2.71 Acres 84.80 23.61 min IMP 0.00 Acres 0.00 0.00 min 2.71 Acres BASEFLOWS: 0.00 cfs TYPE1A PERV IMP 5.80 inches AREA.. : 2.71 Acres 0.00 Acres 10.00 min CN.... : 84.80 0.00 TC.... : 23.61 min 0.00 min 0.20 76.00 224.00 82.00 VOL: AREA.. : CN.... : TC.... : ns:0.2400 p2yr: 3.00 s:0.3480 ns:0.2400 p2yr: 3.00 s:0.0520 ks:9.00 s:0.0520 0.59 Ac-ft TIME: 480 min NAME: Existing Basin,100yr., 24 Hour ns:0.2400 p2yr: 3.00 s:0.3480 ns:0.2400 p2yr: 3.00 s:0.0520 ks:9.00 s:0.0520 0.92 Ac-ft TIME: 480 min NAME: Existing Basin, 2yr., 24 Hour 2.71 Acres BASEFLOWS: 0.00 cfs TYPE1A PERV 3.00 inches AREA.. : 2.71 Acres 10.00 min CN.... : 84.80 TC. . . . : 23.61 min ABSTRACTION COEFF: , TcReach - Sheet L: TcReach - Sheet L: TcReach - Shallow L: PEAK RATE: 0.70 cfs 0.20 76.00 224.00 82.00 VOL: ns:0.2400 p2yr: 3.00 s:0.3480 ns:0.2400 p2yr: 3.00 s:0.0520 ks:9.00 s:0.0520 0.36 Ac-ft TIME: 480 min IMP 0.00 Acres 0.00 0.00 min en en en """""" ......... ......... ::: en en en 000 11'I00 -('4 -('4" .,.,., --- , , , ('4('4('4 ('4('4('4 @ E>Ht\st _L. t P~JI ~yG~eo ~. :X 3~ \5 J I::'Y=+- / ~8'-t WESTSOUND ENGINEERING 217 SW WilKINS DR. PORT ORCHARD, WA 98368-4741 _. (380) 876-3nO ' ~ P At'l/2..NhZDA _ -- ~L <bIT ,~ --.::Ii1PGJZ.VI ~v.::. Nt€A- = 1.05"" + I.. 1 D . -:::: z." J ~ Of L ,_ '.- ,\)5<5 ~ ,.2 ,zr.,~ '08'. 83r:fo ~~v,' '--j> ~I..J C {~ SoF '. piLVI6\.J~ MeA:. <: Z;:~~\.- 2.Z:;- ::: (J. !JL6)' . _.. _ ,_ ~ c:: 8.$__.' b. ~-,J.Sa,~. \" ., . I\.J) c~c-~ . Y~\n) . \111~Js.. TME SJ M SL~.A;r1.G'A- f\-ND WIll ~fn rJ As' Is.. 0, '630.1..- /-AtJDswt176 ~=. &6 /" .' ' _ 8~1 ,~t: ' lUSL ~4, 9) l, &, OJ . I ,~ J _ .... FIL€ H'i~'f-. "- . ~c~) I NAMe. T)E~C ' I dev L' ,tr L \fpJ lJ.t ~ D~ 1:55"" cL~v 10 5 I\)' " ~ 2.2-+ I, , ci~v J~ 6 t ~"tl 1\ I, - 3.1,6 deJ (; - fY1C) 1- C^'~kv,n[L cell &~3 7/.22/97 9:41:56 am West sound Engineering PARR MAZDA Developed Storm Hydrograph Calc. By: M. Myat page f -'~ ======================================~============================== BASIN ID: dev10 SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. ...: PRECIPITATION. . . . : TIME INTERVAL....: BASIN SUMMARY NAME: Developed Basin, lOVE" 24 Hr 2.71 Acres TYPE1A 4.20 inches 10.00 min BASEFLOWS: 0.00 cfs PERV 0.46 Acres 84.80 10.00 min AREA.. : CN.... : TC.... : ABSTRACTION COEFF: 0.20 PEAK RATE: 2.24 cfs VOL: 0.84 Ac-ft TIME: 480 min BASIN 10: dev100 SBUH METHODOLOGY TOTAL AREA.......: RAINFALL TYPE. . . . : PRECIPITATION.... : TIME INTERVAL....: NAME: Developed Basin, ~OOyr., 24 Hr 2.71 Acres TYPE1A 5.80 inches 10.00 min BASEFLOWS: 0.00 cfs PERV 0.46 Acres 84.80 10.00 min AREA.. : CN.... : TC.... : - ABSTRACTION COEFF: 0.20 PEAK RATE: 3.16 cfs. VOL: 1.20 Ac-ft TIME: 480 min BASIN ID: dev2 SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . . . : PRECIPITATION.... : TIME INTERVAL....: NAME: Developed Basin, .2Y!. I 24 Hr 2.71 Acres BASEFLOWS: 0.00 cfs TYPE1A PERV 3.00 inches AREA.. : 0.46 Acres 10.00 min CN.... : 84.80 TC.... : 10.00 min ABSTRACTION COEFF: 0.20 PEAK RATE: 1.55 cfs VOL: '- ~ BASIN ID: dev6-mo SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . . . : PRECIPITATION.... : TIME INTERVAL. ...: 0.58 Ac-ft TIME: 480 min NAME: Developed Basin, 6mo., 24 Hr 2.71 Acres TYPE1A 1.92 inches 10.00 min 0.00 cfs PERV 0.46 Acres 84.80 10.00 min BASEFLOWS: AREA.. : CN.... : TC. . . . : ABSTRACTION COEFF: 0.20 PEAK RATE: 0.93 cfs VOL: - 0.35 Ac-ft TIME: 480 min IMP 2.25 Acres 98.00 5.00 min IMP 2.25 Acres 98.00 5.00 min IMP. 2.25 AcreE 98.00 5.00 min IMP 2.25 Acre: 98.00 5.00 min l?HkE I. t u: "?~<- f'J\ 'k7 pA- 3\.jL-'j 15,' '51- '5/l~ Dc-ftNn~ '9.jsTtM WESTSOUND ENGINEERING 217 SW WiLKINS DR. PORT ORCHARD, WA 98366-4741 (360) 876-3770 . Z.B TiS c..sr- = 18'8 -. ~~~ a ~~~ CJER-~'= r9s~ lit lit lit 000 lit 00 -~ -~.., .,..,.., --- ~~e:. ~~~ @D ~.<d_ PcvQ V~\'AG.€ ctO$ 0tU:~(M) -a.c-J_ ,..--.-'..,- . .. 2 ,e . -:ro f,~sr. 1~D .t?8 0' .~.9 Lf .'6d Ic9!-Z8 JD li;t' 2.. Ztt I~ I.~O \,2Lf S.8c /30.80 I~O ~.c~, 3.~~ 15 ';.~.b .?O'3, 3~c~ /9(.90 '-'" .} .- -, -. ....-' -. .' -," . ' ! . .' ,. ..._"..>~."", - - ~~"",,_"___" _'.n _".,~....._ _,.,....._. . 7/22/97 Westsound Engineering pARR MAZDA page 9:21:24 am Level Pool Routing Calc. By: M. Myat ===================================================================== LEVEL POOL TABLE SUMMARY MATCH INFLOW -STO- -DIS- <-PEAK-> STORAGE <--------DESCRIPTION---------, (cis) (cis) --id- --id- <-STAGE> id VOL (ci) ==~a~$aa*a__._=._..3-~.a====a.==a=.._..-.--=----=..=.-.==a__....a._____~._.a_ 2 year storm ................ . 0.70 1. 55 PIPE-1 ORI-1 190.78 17 3256.55 cf 10 year storm ............... . 1.26 2.24 PIPE-l OR!-1 191.90 18 4878.56 cf 100 year storm .............. . 2.03 3.16 PIPE-l ORI-l 193.76 19 6873.38 cf "/(, 7/22/97 9:38:25 am Westsound Engineering PARR MAZDA Sizing page 1flf Detention Tank/Orifice Calc. By: M. Myat ===================================================================== STAGE STORAGE TABLE UNDERGROUND PIPE ID No. PIPE-l Description: 72" DIA. DET. PIPE Phase-I&II Diameter: 6.00 ft. Length: 245.00 ft. Slope...: O.OOOO~t/ft upstr: dnstr: STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ftl ---cf--- --Ac-Ft- (ftl ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- - -Ac-Ft- =as======.==~=__=_._.=_=__=_.__=__._..==_...=._=======_====_===__=_~S_=__==_====___=_=================== 187.92 0.0000 0.0000 189.50 1457 0.0334 191.10 3728 0.0856 192.70 5917 0.1358 188.00 18.033 0.0004 189.60 1588 0.0365 191.20 3875 0.0889 192.80 6034 0.1385 188.10 60.554 0.0014 189.70 1721 0,0395 191. 30 4021 o . 0923 192.90 6146 0.1411 a~ 1.8 188.20 116.88 0.0027 189.80 1856 0.0426 191. 40 4166 0.0956 193.00 6255 0.1436 ~ c:. \, -rB.30 183.83 o . 0042 189.90 1994 0.0458 191.50 4311 0.0990 193.10 6358 0.1460 188.40 259.62 0.0060 190.00 2133 0.0490 191.60 4.455 0.1023 193.20 6456 o . 14 82 188.50 343.01 0.0079 190.10 2273 0.0522 Hl.70 4597 0.1055 193.30 6549 0.1503 188.60 433,11 0.0099 190.20 2415 0.0555 191.80 4738 0.1088 193.40 6635 0.1523 188.70 529.19 o . 0121 190.30 2559 0.0587 H1. 90 4878 0.1120 193.50 6714 0.1541 188.80 630.68 0.0145 190.40 2703 0.0621 192.00 5016 0.1152 193.60 6785 0.1558 188.90 737.06 0.0169 190.50 2848 0.0654 192 .10 5152 0.1183 193.70 6846 0.1572 189.00 847.91 0.0195 190.60 2994 0.0687 192.20 5286 0.1214 193.80 6894 0.1583 189.10 962.84 o . 0221 190.70 3140 0.0721 192.30 5418 0.1244 193.90 6925 0.1590 189.20 1082 0.0248 190.80 3287 0.0755 192.40 5547 0.1274 194.00 6927 0.1590 189.30 1204 0.0276 190.90 3434 0.0788 192.50 5674 0.1303 189.40 1329 0.0305 191.00 3581 0.0822 192.60 5797 0.1331 .... &:. DeT ?w€ ~ (; S- If' / , ~ ,'cp t==UL ~f)1 'Pt17ts trJ 'jL) ~MP L.j -AA 1711 AJe6b froD/T\~NrtL . '18~ LF ) .... DOt:.. SID . Co~6vn6N ~ ~ ~G6.u'fLep w I u.... NcSf' 'lSe:. I\fP '- LC'D s (No::. ~€C ~^i.P .-;t. . - 15 7/22/97 9:38:25 am Westsound Engineering PARR MAZDA Sizing page ~(Iy Detention Tank/Orifice Calc. By: M. Myat --------------------------------------------------------------------- --------------------------------------------------------------------- STAGE DISCHARGE TABLE MULTIPLE ORIFICE ID No. ORI-1 Description: ORIFICE FOR Phase-I&II Outlet Elev: 188.28 Elev: 186.28 ft Elev: 190.80 ft Elev: 191.90 ft Orifice Orifice 2 Orifice 3 Diameter: Diameter: Diameter: 4.0000 in. 3.8000 in. 3.0500 in. STAGE <--DISCHARGE---> STAGE <uDISCHARGE-- - > STAGE <- -DISCHARGE- u> STAGE < uDISCHARGE- -- > (ft) - ucfs-- ------- (ft) ---cfs-- ------- (ft) u-cfs-- ----_..- (ft) ---cfs-- ------- ====================._=z==_=.=__._._=._._=~=.._8_______.__________.=...._____...=___._.=__._========...= 188.28 0.0000 189.70 0.5174 191.20 0.9898 192.70 1. 6788 188.30 0.0614 189.80 0.5353 191.30 1. 0316 192.80 1.7168 188.40 0.1504 189.90 0.5526 191. 40 1.0705 192.90 1.7536 188.50 0.2037 190.00 o .5694 191.50 1.1070 193.00 1.7893 188.60 0.2456 190.10 0.5858 191. 60 1.1416 193.10 1. 8241 188.70 0.2814 190.20 0.6016 191.70 1.1747 193.20 1.8580 188.80 0.3131 190.30 0.6171 191.80 1.2065 193.30 1. 8911 188.90 0.3419 190.40 0.6322 ~CU"~ 1.2371 l~~ 193.40 1.9235 189.00 0.3684 190.50 0.6469 192 . 00 1. 3465 193.50 1.9552 189.10 0.3932 190.60 0,6613 192.10 1.4083 193.60 1. 9863 I 'J3 ~'- 189.20 0.4165 190.70 o . 6754 Z .. G.. 192.20 1.4616 193.70 2.0168 t ~ 11L <:l. 3t.L~ 190:8~ - 189.30 0,4385 0,6893 i 192.30 1. 5101 193.80 2.0468 189.40 0.4595 190.90 0.8267 192.40 1.5555 193.90 2.0763 189.50 0.4796 191. 00 0.8913 192.50 1. 5984 193.92 2.0821 ~\IEiL fi.o'a\l 189.60 0.4988 191.10 0.9438 192.60 1. 6394 ~/)/ " STORMWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN reason SBUH overestimates the peak flow rate for pervious areas is because the actual time of concentration is typically greater than what is a.sumed. Better flow estimates could be made if a longer time of concentration was used. This would change both the peak flow rate (i.e., it would be lower) and the shape of the hydrograph (i.e., peak occurs somewhat later) such that the hydrograph would better reflect actual conditions. Note that it is not necessary to make corrections to the curve number ("CN") for modeling runoff from pervious areas when using SBUR. The other major weakness of the current use of SBUR is that it is used to model a 24-hour storm event, which is too short to model laroer storms in the Puget Sound basin. The u.e of a 7-day storm is a more correct choice for Puget Sound, in conjunction with the u.e of a continuous .imulation model, such a. HSPF. The SBUH model may not be adequate for modeling '-day event. and it i. anticipated that it will be ev.ntually replaced by the HSPF model. Note that the u.e of the 7-day duration storm will apply only to streambank ero.ion control BKP. and not to runoff treatment BMP., a. the 24-hour duration event is the correct one for runoff treatment purpo.... When designing a runoff treatment BMP, the primary concern with u.ing SBUR i. modeling of the inflow hydrograph to the BMP. SBUR tends to underestimate the time of concentration, thus the peak flow rate occur. too early. Thi. can create problem. for d.t.ntion-type BMP., such a. pre-.ettling ba.in. and dry vault., becau.e th..e BMP. are d..igned to achieve a 24-hour residence time. calculation of the re.idence time is .ensitive to the shape of the inflow hydrograph. The inflow hydrograph i. al.o of fundamental importance wh.n d..igning an infiltration or filtration BMP as the.e BMPs are sized based on a routing of the inflow hydrograph through the BMP. The best solution at this time is to try to account for subsurface flow when e.timating the time of concentration. For sites with low impervious cover, this will increa.e the time of conc.ntration, thus reducing the peak flow rate and shifting the peak rate to a somewhat later time. Note that for BMPs which maintain "permanent pools" (e.g., wet pond.) then .D2D.a of the above concern. llpply since the perman.nt pool volume is adequately predicted by SBUR. ~(When designing streambank erosion control BMPs, it will be necessary to apply a ~ ~ correction factor to the design volume of the BMP when using SBUR to model 24-hour . storm events. Ecology currently recommends that correction factor. of 20 percent and 50 percent apply to re.idential site. and commercial .ite., respectively. Figure 111-1.1 is provid.d which graphically illustrates the correction factor based on site impervious cover. This correction factor is to be applied to the volume of the BMP without changing it. depth or the design of the outlet structure, thus an increase in surface area will result. Appendix AIII-l.2 di.cu.... this is.ue further. Also included in another appendix are the i.opluvial maps for the 2, 10, and 100-year, 24-hour storm events. lII-l.3 IURIJIDIC ~IORAx. S'rAHDAltDS The min~um computational standards required depend on the type of information requi~ed and the .ize of the drainage area to be analyzed, as follows: 1. For all computations, except for basin plans or equivalent, the minimum' standard .hall be the Soil Conservation Service Unit Hydrograph (SCSUH) method (-],) with the level pool routing method, or equivalent hydrograph techniques, .~iect to approval of the local government. The Santa Barbara Urban HYdroqraph (SBUH) method is a180 an acceptable method. 2. . If ~ ba.in plan is being prepared, then the hydrologic analysis shall be per- formed u.ing a continuous simulation model such as EPA's Hydrological Simulation proqram - Fortran (HSPF) model (2), or EPA's Stormwater Model (SliM) (3) ,.. or equivalent, a. approved by the local government. III-1-2 FEBRUARY, 1992 <( ~ " J. ! .!l ~ ~ f1 ~- t\J ,. J ~(P .+ 1'$ . \D 'c:t '>:'. ."" " lJJ ~ .. VI(/~ STORHWATER MANAGEMENT MANt1AL FOR THE PUGET SOUND BASIN Table 111-1.3 ses Western Washington Runoff Curve Number. (Publi.hed by ses in 1982) Runoff curv. number. for selected agricultural, suburban and urban land u.. for Type lA rainfall distribution, .24-hour storm duration. LAND USE DESCRIPTION CURVE NUMBERS BY HYDROLOGIC GROUP ABC D cultivated land 1 : Mountain 0 n areas: M.adow or asture: i Wood or fore.t land: Wood or forest land: Orchard: .winter condition low brush & raselande undisturb.d young ..cond grOwt~ or brush with cov.r crop Open spac.s, lawns, parks, golf cour..., cem.t.ri.., landscaping. Good condition: Fair condition: on ~75\ of the gras8 cov.r ar.a gra.. cover the area on 50-75' of Gravel road. G parking lot.: Dirt road. & parking lots: Imperviou. .urfac.s, pavement, roofa .tc. Open wat.r bodies: Single family re.id.ntial(2): Dwelling unit/Gross Acr. 1.0 DU/GA 1.5 DU/GA 2.0 DU/GA 2.5 DTJ/GA 3.0 DU/GA 3.5 DU/GA 4.0 DU/GA 4.5 DU/GA 5.0 DU/GA 5.S DU/GA 6..,0 DU IGA 6.5 DU/GA 7.0 DTJ/GA POD'., condo., apartment., commercial bu.in..... & indu.trial area. lak.., w.tland., pondS .tc. \ Imperviou. (3) 15 20 25 30 34 38 42 46 48 50 52 54 56 'imperviou8 mu.t be comput.d 86 91 94 95 74 82 89 92 65, 78 85 89 42 64 76 81 55 72 @ 86 81 . 88 92 94 68 80 G 90 77 85 90 92 76 85 89 91 72 82 87 89 .. 98 98 @ 98 100 100 100 100 I S.parate curV. number .hall b. ..lected for , pervious & impervious portions of the ai t. or basin (1) For a more d.tailed de.cription of agricultural land use curv. numbers r.f.r to National Engine.ring Handbook, Sec. 4, Hydrology, Chapter 9, August,1972. (2) AssUme. roof and driveway runoff i. directed into street/.torm .ystem. (3) ~h. remaining pervious areas (lawn) are con.idered to be in good condition for the.. curve numb.r.. III-1-12 FEBRUARY, 1992 , Fia 5-1 ISOPLUVIAL MAP - 2 YEA. I\...." /1 3W I 2W I IW IE 2E r;- DATA SOURCE: ~! 28 28 <i":sa :> COU n -:y-- 2- YEAR 24-HOUR PRECIPITATION - 27 @~@ ISOPLUVlALS OF 2-YEAR 24-HOUR PRECIPITATION IN TENlHS OF AN \lICH 27 .... -26 25 @ 25' ~ -I 24 li " ,I 24, . , ~ . @- .. ~'~-~-4----- ~ - ----.--....-- tor , . 23 ~ 23 u.s. I)f.'PNmlOIT 01' CClUU!JlCt DeJ'f<JlIlI.'tU&.....c:a....... ........... , u.s. IlD'NmIENT OF AGRICUl.1UflE I Dill Al_ _ ... __ IDI'CIl: - -- . e lrT'rr ': .~ ;1 r.3'E' "22 3W , 2W 1W I IE 2E REV 10121/96 S-6 FIeRE 5-3 ISOPLUVIAL MAP - 1 0 YE~ , -"j /1 3W I 2W 1W 1E 2E 28 _<i.~saJ Coun":y 10-YEAR 24-HOUR PRECIPITATION =- 27 @)...--...@) ISOPLUVlAlS OF 1o-YEAR 24-HOU ~ PRECIPITATION IN TEN1l;S OF' AN INCH - ~26 @ I -25 i~ :24 /: I DATA SOURCE: ., . I, u.s. DEPAR1IoIOIT at CXlIoIIIERC[ ~23 ------ --~_..--.....- .. , , , . u.s. DEPAIn'UENT at AtlRICUI.lUllE t at> u- -. .. __...-..at ~ -- . 22 @ 'r" ',... - ~ 3'W. .~ 2W 1W 1€ 2E , 3t ~ I r:;- 28 - 27 - 26 - w.- 25 - 24 23. 22 ~ REV 1001196 5-8 - , tilt Figure 5-6 ISOPLUVIAL MAP - 1.EAR T 3W I 2W 1W 1€ ~ 2€ r;;- 28 <i-:sa) ~@ 28 - Coun':y @ .~ - 100- YEAR 24-HOUR PRECIPrrA TlON ,@ 27 @~ ISOPLUVlAlS Of 100-YEAR 24-HOJR 27 a PRECIPITATION IN TENTHS OF AN INCH @ --~ -~._---- -23 u.$. OO'AlIl'NtNT or CCIAIEJlCt .. 0. _--=____ ___..rICE ._. WIo__ .. u.s. DEPM'11IlOlT OF AliAQJl'lUllE __ -.... __1GMClE ..-.- - 26 ~ -26 25 ~ -- (fj \ @ L;/"" ~'(;. c 25 - 24 24 I / (@ tJ )} -----: 1'rJ.,.f 23 DATA SOURCE: -- =22 @ 8 - '. = 3W , 2W , 1W 1~ I,.. ..,... 22 ; 2E - I 3E ~ REV 10121196 S-f1 ., -, WestSound Engineering, Inc. q l - 044-:;) Phone (360) 876-3770 Fax (360) 876-0439 217 SW Wilkins Drive Port Orchard, WA 98366 September 2, 1997 Project No. 684 r Rein I ;1: ~: I, \1V ;rJ"~ ;;"~N \ f ,'" , '. . .- I '\~ 1 ~ 1:'1\ '. .!. ~(~ . , DA rt:. . :......1 ,. .... .'" ... '.- ,-.'. " ".. .......: i '..." '""t' .... ...- ,,,a ~'l"' . .---... . ... . . ... I~J ; .~/ ~ '! :_f":>'_;~ :; "~";: = .J Mr. Ned Lever,.J?E: City of Bremerton Department of Public Works and Utilities 3027 Olympus Drive Bremerton, W A 98310 RE: Parr Mazda 2nd Submittal - Dear Ned, Enclosed are three copies of the revised site plan and attachments for the storm drainage calculations for your review and approval. Two additional catch basin are proposed with the revised site plan. All new storm pipes will flow to catch basin # 4 prior to entering the detention system. Catch basin # 5 is added at the north end of the entrance to intercept sheet flow. Cement concrete extruded curbs has been called out along the edge parallel with Kean Street and the parking lot has also been re-graded to allow for sheet flows to be directed to CBs# 2 and 5. At this time we do not know the location of the new building. Therefore, the gravel parking will be remain as sliown and flows will be intercepted by a v-ditch. Additional catch basin may be require to collect storm runoff once the location of the building is known. / We have modeled the upstream off-site drainage basin and calculated the peak 100- year/24-hour runoff rate to be 0.77 cfs. The 15'~ diameter riser has as shown on the plans has a capacity of 6-cfs with a foot of head. This riser section is capable of conveying both the on-site and off-site 1 00-year/24-hour storm events. Also attached with this letter is a flow splitter calculation and a conveyance capacity calculations. The flow splitter calculation documents that the water quality storm event of 0.93 cfs will be achieved prior to the water level reaching the overflow elevation. The 12" dia. smooth wall pipes as shown on the plan will be able to convey the 100-year/24- hour peak runoff rate in a uniform flow condition. .' Yo Weare still in the process of finalizing the details of the monitoring plan with the Deparunent of Ecology. We will forward you a copy of the final plan once we have Ms. Deborah Helstrom approval. Thank you for your assistance and please give myself or Maung Myat a call at 876-3770 if there are any questions. Sincerely, / ~~ Craig T. Baldwin, P.E. encl. cc: Barry Brunette -' ., .'8/18/97 2:25:52 pm .Westsound ~ngineering PARR MAZDA Off-Site Storm Hydrograph Calc. By: M. Myat page 1 ========~============================================================ BASIN ID: 1000ff SBUH METHODOLOGY TOTAL AREA. . . . . . . : RAINFALL TYPE. . .. . : PRECIPITATION. .. .: TIME INTERVAL....: BASIN SUMMARY NAME: 100-yr./24-Hour Off-Site Basin 0.90 Acres BASEFLOWS: 0.00 cfs TYPE1A PERV 5.80 inches AREA.. : 0.90 Acres 10.00 min CN.... : 85.00 TC.... : 15.12 min ABSTRACTION COEFF: 0.20 TcReach - Sheet L: 200.00 ns:0.2400 p2yr: 3.00 s:0.0750 PEAK RATE: 0.77 cfs VOL: 0.31 Ac-ft TIME: 480 min j ~ IMP 0.00 Acres 0.00 0.00 min .. ",,,,.,,, ......... ......... ......... xx:; "''''''' 000 "'00 -C"l -C"l'" ......... --- c-4~~ C"lC"lC"l @D -.. 'J .".'~ ~ t~;~ .1 -. ~,..~~-. ..-..---.~- ~.,.~:,~,..:-~;..-1_ - ~ '~" ~ .i.-.. WESTSOUNO ENGINEERING 217 SW WILKINS DR.. : PORT ORCHARD, WA 98366-4741 (380). ~76-3~O G::Nj"(tc)\.. ~~~. - fi.co..,;) .~L\~ .. ;<.. . - fl\.' . .. - ....-.. -_... .. .. ~Q""",':: ,() .'53 ~ ..,- :--. -~----_. -''''''-''- -... ... ~ ._-_._-~_.__.__.. ~.._~ ..-.~ - ..., . . ; 8" CM~ ~ .....j ~. 5C'~' ~ ~\nce .J:'e.:! ~~ ,-28. ..._....... .'. ". ._ _ ~I(e:ru;.~ eL -. L 93.9 e. . h c: /9';.9 Z - (8a.2.9 :. S _" 't I. . .. __. . 1/. G.. C.). t.;. ., = c..A . e9~ ,- .. G= - ~:6Z. 3' . . .... . , '(. . ~c c:::. -<:;)a .. \ = ~-_~_~~~'~~~)_,~}~?x. ~JLfJ .~.. ..' ., "".____",0...,,, :.:. ~ - 6S"ltot. C' l ~ .csa) in ~ C. C:J g c..fs. . .- ., -.-... ~ -'.~ '---.-- <) 0..... Q -= t:1~ ~8 1..Fs. ~ Q~; . ,..... . ~ ~I(~ er... / , . .._.- -.- .,. """'-" . "~'-)...- ..' . .' .... STORKWATER MANAGEMENT MANUAL FOR THE PUGET SOUND BASIN ~J Lj \-t~:) (i..) I e 1.5 I \,0 Figure III-2.38 Riser Inflow Curves Weir Flow Orifice Flow ----- 100 , , . I. .,. . , ; . . "', r;T " .,11I'> ...... '~' H I I " . . " .. ... I .~ -. I ,,. ~ '" - -, ~ . - -~~/, 7' 'TT I TIT 'If .f 1111 7 77 I I I . - ~ c o u u .. ... u a. - u ~ u '3 ::J .::. o 10 ::s s -::1,2..1 1 0.1 1.0 HEAD IN FEET (nw~sured from crest at risarl Cd. c..<.r:.) ~ -:r.t. SOURCE: USDA.SCS r:; " :~ OW1EA :: 9.739 OH:Y2 OQAIPlC~ '" 3.782 02H112 G1f:>O::" "$ ',I~) $.93> 01__ <.:fF~\re = ~.::t.::t} . Q in cis, 0 and H in feet 36 33 30 27 en 24 cu .r::. u 21 ~ .... cu cu 18 E (tt 0 15 .... cu U) a: 12 10 10.0 t:>....... i<.lS.'5t.. WL(.J." ~ ~ oJ.'"!.lf<;: ~D <:lfI"o-s.,;c: Fi..D~. III-2-~6 "" FEBRUARY, 1992 .~ i)) .> Conveyance Analysis Rating Table for Circular Channel Project Description Project File Worksheet Flow Element Method Solve For c: \ha esta d\proj ects\684 \684. fm2 12" CPEP (Smooth Wall) Circular Channel Manning's Formula Discharge Constant Data Mannings Coefficient Depth Diameter 0.012 1.00 ft 12.00 in Input Data Channel Slope Minimum 0.005000 Maximum 0.010000 Increment 0.001000 ftJft Rating Table Channel Slope Discharge Velocity (ftJft) (cfs) (ftJs) 0.005000 2.73 3,47 0.006000 2.99 3.81 0.007000 3.23 4.11 0.008000 3.45 4.40 0.009000 3.66 4.66 0.010000 3.86 4.91' '> G\~... Q /00 ~ -&.tnn.~ "DEX. -est\SJN ) ~ '6. If. c.f'''b ' 08/18/97 02:03:25 PM Haestad Methods. Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755-1666 FlowMaster v5,13 Page 1 of1 A'tJ~ 1 ~ '''5'7 B.: a. PH - BREHERTOH D.e.D. 3aB 4785282 Page CITY OF BREMERTON BUILDING DEPARTMENT (97-201 ) PRRMlT APPLJCA TION DATE: July 23, 1997 TO BE COMPLETED BY: August 10, 1997 / 97-0442 ROD PARR OWNER 4949 KEAN ST LOCATION OF JOB FOR: GRADING ENGINEERlNG COMMENTS REVIBWED BY & APPROVED_ DENTED X B." '''7 WESTSOUND ENGINEERING (C. Baldwin) CONTRACTOR C;7~ () cft{-J "" ilpte-~.r SY'f1fi'M 0 /IIu .~f'aUJtt~ t l3MP. IAI ~~~~ USE 7ff1S 8Nf p T1'/E ttJ~€7l /'J1tJ rJ:, IMPI..f-II1&:t..rf A MW~AJ~ F7~IlA.II' 7?> e'VA t VI4Tfi 1r'J fIrF6'f7:(,/eJe:~J J.?.tdV/t1E A t<~~}"'AI,v~5 ..tl./1E.()tI~!=' --ri1"/~rr=. WH,ttfr At..re;/A/AT,f/E.!5iAI' 1U1U-.~' wtr;ilUJEJ::;> ~V~ 7f1'e ,VfJ/<pfGHS ~~~ f!a:Zh1 ... 1-~t1~()q .B6AP~Ss.s:~/r}/...- ,-"A) ""'~YI~ J4 MfiJrlMJ ~~.. ~Y/~ UPS~i'l1 ~I re (::~I M~ 7fftJ A...Ot:.tJ. . \~' ~F(.,tJ~.. sPu~. ,t:A(.w~s ~, I!Itr;L ~IZtF/'-E/~'E:tt. r<-tJw CAlLtJlApONS _ __-WA~~E P/~ _~L.Ctl047.1(jAJ ~_ ~ M~ Uf..KJgq7<J1..U 7?>. &f~~L. ~/Tff U?vV6<qt~ f/PIN(!,. 11M ,J, ~c-7UJte Aut m.4J^'fe~~ fitJ!/~S'~.s. ~)1?ltAvlQ.~ 'Foi? .MrJ1tE ~~/ptl€ cSP,4.JlIAM. 7?:J c;. (3. '.1 IAJ 7 ~ ..~.. As;PMLT A-/l.M.. ~J~ PA~~ S~77OV Ai d~ --- --- . ..... - ..... ....- 1;') \klt.IFV J/6HT 01 s,-MCfi i9J1G P /?u t 0/lq I f'1 7) WILl. ~v 1R./<.~('...qJJJ>~ I' ~t 8 f?_ f.Ft:J b 7 PHRMIT ,', I o I . , , ~el 3, 1~ RlM"'1'\5.~\ If :0: 1 Bf>.23 ....JCOO1RACia 10 \itR1f1 t\V 'f~\OR 10 COO51RlJC1\otO .... ',' ",. ~'''''' cett 2.1 . , ~ .~' ll'I1.\q~.o ________, '. ' \f(I\}:'\l1L ',. ' . . '. ". \[{outO:>l' ", " '\ , ", J:r:t ., /' '..(' , " , .. " ........ ('.I (l) ('.I III (l) r-- .... " IS) . . (l) ;;>lc..'f~ t. 2. . (')~/"J ..., iIlIYC. \ , '. t' ~7' ~Y' . ~<f' i ,', l)~~ B\ li1.~ R:M~1 '\4 .f>O If=\,\l.f)O lj Z; ~ <( ~ 1('\1' r. ~ TOf=lQ3,Q2 I I i KEY f A6RlC tHO EXISTING GRot.ND WITH (;" BY G" DfEr TRENCH f BACKFU IN TRtNCH WITH 3/4"-11/2. l'XA. wASHED ROCK. BRie rl::NCE Dt:: 1 AIL N.T.5. " 72"0 eMf 3(0.0 DElE NTlON TANK eMf , BOTT.::: 187.C\2 'I \ 72"0 TYPE -II MANHOLE II I ,n u '[~lB~.2B I I :)> ~ , ... Ul ~l -.J 2r~ VENT PIPE. .Ty al ... al m "1J :E: . . m , III J .~ t O.3G)' T YP; I n a ALL PROPOSED DeTENTION TANKS AREA SET'AT r_o,,"1 :J- ,Vf~ " PROFILE 2" tit COMPACTED DEPTH ASPHALT PAVEMENT. CLASS B '1, " - ~ MIN. COOP AG rED DEPTH /CRU91fD SURFACING lJ,lb L ,.. 'lI' ~ . TOP COURSE:. /_ 'fllPtIk O\WIJ~- v;t:Jd ~O,J \I->b , uJ ~. ~. COMPAGTm BASt: OVER, SUT ABU~' -SUBGRAO[ ~ W III CD ... '-.J m S.TOAM .'IE N. "1J D 00 III N ; . "" . . ~ . WestSound Engineering, Inc. 217 SW Wilkins Drive Port Orchard, WA 98366 Phone (360) 876-3770 Fax (360) 876-0439 September 2, 1997 Project No. 684 R EV I SIO'N DATE 3 Mr. Ned Lever, P.E. City of Bremerton Department of Public Works and Utilities 3027 Olympus Drive Bremerton, W A 98310 RE: Parr Mazda Entering Sight Distance Dear Ned, On August 19, 1997 we measured the entering sight distance for the proposed entrance for the Parr Mazda Expansion. The access is onto Kean Street which has a posted speed . limit of 25 MPH. Looking south, to the right, the sight distance is clear for more than 350 feet. Looking north, to the left, the sight distance is restricted by the parked cars located on the Mazda site. The sight distance was measured at 275 feet which meets the AASHTO criteria for case B-1. Attached is Figure IX-40 from th~ AASHTO manual for your reference. Thank you for your assistance and please give myself or Maung Myat a call at 876-3770 if there are any questions. " Sincerely, h~ Craig T. Baldwin, P.E. encl. [EXP1RES 4/4/9<=] cc: Barry Brunette ~ ;:. \ >:e "" \ "" \ \ "1 \ \ '= " "- \ " ~ !. w \ u "l ~ i'-\ ~ , 9}.. " -'.'~~ " 9- ~ ~ "- II> "" \ \ ,4~ \ ~ \ " r,... uCIP&w \ " \ '" _ _ +lilJOrl> - ---- """"~'{ \ _ ;.:':! ~ t""'-- " ~"O7 ~~1 -9= - " '\ ::-- -<: :::u.u. ~ -- - ' , ,- = - - ; -- \ \ \ ____r \ \ \ \ " \t'l " I " \t'l ... .. ~ '" '" -------- -- . .; Hi hwaYs and StreetS ""saro-G'''''''triC DeS,gn 0, g 162 <.:J~ ~ <:) 000 'is;::.-";::' o..g~ ~v>o.. CG~~"f2 'Z 'C...... 'C 0::. 06 0 ~u.~~ <::> ?' <::> ~t;;4.~ .....0:),...<.:J d~d)5 3-"'Zc::l ?'..-~B ':<.-,,0::. 0.. ,... e ~~~~~ 'cl~<.:JS~ ~!;e-'E? ..- ~C:I:l \:!::!. 0 ~ ,......... Ou.l~""'<!S >:::~-;:5~ G..Jr-.a::.~ Vi~~u-dJ B o~ ,...... ;0 -" ,...0 ;::.<% -'~ <.:J-" -;,..... ~d =,"'" .,....;:::, .....'" do.. ~"",'3. .....v>-" ",0<% <%<.:J o..<.J-" ~~~ e,...~ 4. v> .....~- ~G"; ............ ,~~"j o2~ ~-rg <.:J"'u. r;:; <.:JO ~..... 00- ..... 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