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HomeMy WebLinkAboutDetention Calculations - BLD Engineering / Geo-tech Reports - 10/10/1996 MACBROG DEVELOPMENT COMPANY INC. 231 WILKENS PLACE PORT ORCHARD WA 98366 RECEIVED 0 C T 1 1 1996 October 10, 1996 MASON CO. PLANNING DEFT. Mr. Alan Borden Planner Department of Community Development Mason County P.O. Box 578 Shelton, Wa. 98584 Ref Davies Project Clifton Lane,Belfair Dear Mr. Borden: Attached please find three copies of the revised site plan for the office complex on the referenced property. It has been drastically revised since our preapplication meeting to incorporate the guidance given at that time. Specifically we have: 1)Relocated the building and the parking to conform to the"Belfair Village" concept put forth in the new Comprehensive Plan guidelines. Further we have added sidewalks with junctions where we anticipate the crosswalks to be. 2. Engineered the detention pond and a possible bioswale in accordance with the guidelines given the engineers by Mr. Tahja. I have include a copy of the engineers calculations. 3. Increase the parking to meet the professional office requirements. Note the second floor space has been reduced and designated nonpublic to eliminate the need for handicap access. I would appreciate your review of the revised plans during the next two weeks. I will be away from the office until the 28th of October,but if you have any questions please contact Mr. Tom Brogan in this office. I wil tact you office upon my return for your comments. My thanks in adv Sin- rely, Dennis McBreen cc: Mr. and Mrs. Davies 30 560 TEL: (p<876-8319 FAX: ( 6) 857-3495 10I'0 /199E, 11: 03 3913055 BAIMA HOLMBEFG IHC PAGE 02 BAIMA & HOLMBERG, INC. J013 -F-t_C�►�� = - 100 Front Street South SHEET NO, ISSAQUAH, WASHINGTON 98027-3817 (206) 392-0250 CALCULATED 9Y -- DATE CHECKED BY SCALE i , ... .....�.............,.........,..........:,.:.:............,........._..,............. : :............_..._....................... .... ..... ..... ...... . ...... ..... ; , • IE , �` rsD tT t. .r .l i , , a, : i ; ,a i ...... ;........................... .... . ...............r.:..... ... �.......... , , ............ .. .... .... ............... ....... ...... .. .. , , i s w AS .. ...�.............:.........................................:..........::..........a.. ....:............;...lr..�...�;..�.C-'�. ... ,. _�..... ... ..... ...... ,.... .........,...... pTc. ..fir .... i 1 • N , , ;_..........:_..:........,.. :........._............... •� ® ,.1 .a4. .... ....;. u� i..Gr ..t, i... ; .. i1 .............:......... ...........y.,.........�............�....... :....................:........7....... ... :......... .................................... .�... ..... ...... ........A...........:...........................6.............,....... ...... : ... , ................................_.......,.............;.........................r.... ..q.c'.............,.. .....!. 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JOB 100 Front Street South SHEET NO. OF ISSA UAH, WASHINGTON 98027-3817 (206) 392.0250 CALCULATED BY �L - DATE,��7 CHECKED BY __ DATE SCALE ...:..._.............._;................................._....:..................................._.........................................1..............:..............,..........:..,........._.......................................i.....................................................i............:..........................i....................... .,:............y.......:.:.. .................,.........................•........ ........ cA ' a �r...... .. •. ... .j , , 1 7 i i �r ........................a.............;............,..........: .�........,_..... ... .. .•......... ... .. ..... ...... ..... ...... ..... ..... .. r .......... ..... ..,.. ...... ... i , i , ' ' i i i , i , , . . 1; .'C .... ro..nj i i • i i , , , i ; ...,.,.:.,...................r....:.........._:.............:..._.......,...........:....................... ...., .... .... ..... ...... ..... ..... ..... ........ ..... ..... i ; ...... ..... i..........................i.............:.............. _.......... ............i.............t..........1..............:............. ... ................... ..... �... v"�.. { .... ....{... , ! , • i Uri L . fit? ..... 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W/ASH|NGTON 98027 38l7 —^� �------ (306) 392'0250 o^Lc«wrsoa' '--___--' o"rc O°rn^:on,__ v^,* � � ft 1-00 pev 1O108!1996 11: 06 3913055 BAIMA HOLMBERG INC PAGE 06 lowly All tx«r, �tiD< rcon%s +l+t+r�ktiktxt� *s• 24—HOUR 'STORM 4 .00" TO TA& PR .�I P . . .-- -------•-------------- ----_— --------------------------------- I QTA PRINT—OUT; AREA 5 ACMES) P ERV I GU9 IMPERVIOUS 1`C': 1 N I NU EW A PEAK-OWE) F--PEAWNS) VUL (CU--F T iv 7.67 9401 Q_ --------------------------------------------------------------------- 1 � . xxsRs.x#six ,� :x �,e `s.C .S. TYPE-lA Dl i'RIPUT'IOiV 1 0r.1'Lkk 24-HOUR STORM *t** 5.50 TOTAL FREC I i- . -------------------------------------------------------------------- AREA {ACRE S) PERYAUS IMPERVIOUS TC (M I NUTES) A RCN A CN .�J .; w5. .C) .1 "K .0 i,:Ef-K-O`r.r.L) T -PEAK (H i S) VUL QU-•i'"` ) �f a --------------------------------------------------------------------- s� �� �r+ixitsFs# xiE S.C .S . TYPE- W D'1'STRIBUTION a x *x 1 i i 0-SEAR W-HOUR STORM **** ? .5U" TOTAL P EC I P . --------------------------------------------------------------------- A T A PRINT- OUT t AREA (ACRES) PERVIOUS I MPERY I QUG TC (M I NUTEG) A CN A Chi PEAK-O WS T-PEAK(HRS) VOL (C:U-•F-T ) 7.67 �too- 10!08;'1996 11:08 3913055 BAIMA HOLMBERG INC PAGE 07 �•.��r�������r��r�-���r�4 S 5 .�: c� �_';�W�'-lip u:i;�l-F�:l"�Si.JT-.,----------.._.._ .__._-_..._._. .------ • • I O N 7t dk 7###f�F i.iF•!F a 7t t �t if-+k#aF tF ** 2-YEAR K--HO► R sw oRm **** 4 .is 0 TOTAL PREC i F = - ---------.---•------_--.....-------...---_.__...------ .._-_------__------------- ..-- --.___-- J;A a A PRINT—W AREA C ACR;ES) PERVIOUS IMPERVIOUS 1'W M I i!lU T ES) A f 14 A l-N PEAK-Q (CFS) T-PEAK (Hr;5) OL CCCU-F"T ) 11902 r� :F4�fYift4aFA�f#�k1Fle�4 E .C .S . TYPE—IA DISTRIBU"T�t�'1}�1— _ s R* 1 i1-YEAR 24-HOUR STORM **** . ('C1fAL. PhLC it kxt•:� t� *xx ----------------------------------------------------------------------- QTA PRINT-OUT , AREA i ACRE'�) PERVIOUS IMPERVIOUS T-C (M I NUTES a;LFlK-Q (CFS) C—PEA K o = V 1.,, „, 1 .51 7 .67 : ,.r�:� -. S .C .S . TYPE—!A DISTRIEUTION k x x +r ?r 1 UU-•YES=R c4-HOUR STORM **** 7 .'0" TOTAL F'F2u 1 F' . t•�*�r��r ar --------------------------------------------------------------------- :,+A P INT- OUT AREA WERES) PERVIOUS &,PERV I OUS •1'C: t rs I NUTES) A EI'4 A L N 1 .s% .4 86 .0 .6 961.0 ,ti P EAK-G (C S) T.-PEAK i HRS; VUL W-FTT ) 2.1.4 7 .r r 24218) �B Fj E. 001 1..:1—�1? �t!r = H? .`�1�i3,:a—.i (SJZ)) Q—:;1"'.?•:I P1:3 y (saimJTW) Di f1(111 T snoi i��•f 1' �l?7.�M' Ma-!;aN >Rx#•>Fxxxx# • �5,3-4K-i"A IV.C.QJ_ 4nOH...172 ' acx *?Fx�cxlc;�� �s* � 4)� tiTP.0T L._a. L SYHH) L—NO3"i N_J tl N ti (S3.l.nNTW) 0 9no.TA jwrL Cifio!AP33d {sa Ili 0%,11 H u �fa:j :#{f • .�?.�3;:i�i 1�,1.�.1.. ut7!�"t� >Ess.x Lf�.f©.1.� �r!l,tN—*7� ;�hi�;,-�'sT k##i#::R+r•* ��x��y-�•�####�+f�*##m��# ha�t7 � fi!�.T.`�..1�I+7 t�T..._�;�!.,L, ` �` :i" �• •�#Y#aYa{.:�Y; ir•��••k�#+�*#� i.i_a--(!"J) -1CY, + tiH i ;:aH: ,:a C.;13)0,—tH3,;a W'l F1 i•l;l M Y i•rtrJ—i.!i I,.i,-1 1J.J..;-4 ;:+*.�:�..,. aT 1 ?i•:-i -1"9.1..i�..t. t;1rs" t� r, tt•x.x fl;iG,i. :�lfjtlH....fi� ':jH A iF # ## #+ts is# IF1 x3f•YYY} yFn9[ ##aF ,cs 3`JCJ'.1CJ?8I»!.. ;jl� HT-- .a.l.i `�•� itlE*IF�tX* r. � KYaRxi i:iiiF Quo f �2 80 3O�d ONI 0a3EW-1OH dWIy9 SSOET6E 60:TT 966T/80/0T 10/08/1996 11: 08 3913055 BAIMA HOLMBEPG ItlC PAGE 09 ( vo) open NA Iq C T. _DP vaZ-621J;�b / 7 t ******Rx�r**�r«*�►,rt�t S .C .S . TYPE-IA DISTEtIOUTWN xx*#***** E-•YEAR 24--I-lllUR STORM **** 4 .00" TOTAL PRECIP . �����«�r*�►� .-_.__-.--.__.__--_--_--.__----_•--_.__.--_-.-.-.-._._.--._------------.-.------._._--_--------- DATA PRINT-OUT : AREA(ACRES) PERVIOUS T MPE RV I OUS TC (MINUTE W .4 .2 56 .0 ,2 0 " PEAK-Q (CF S) T--PEAK (HR E) OL (C,WFT; L4 ---------------------------------- S .C .5 . TYPE-1A Di TRIBUTlOhi 10-•YEAR E4-HOUR STORM **** b .0t," TOTAL PREC:I F'• . ---------------------------------------------------------------------- +ATA F-'R'I N T-OUT . AREA(ACRES)ES) PERVIOUS IMPERVIi7PS TO (MINUTES) A CN A CN f'k:AK -0 0 T-PEAK (HRS) ` OL (C:i-l--P T: 6I r r.0 I . �i� r .3 l� S .C.5 , TYPE-!:A DISTRIBUTION 100--YEAR X-HUUk STORM **** `r .`0" TOTAL PREC I P, ---------------------------------------------------------------------- .!ATA PRINT-•UUT AREA (ACRES) PERVIOUS IMPERVIOUS W (M I!`JUTE;:;? A CN A cKi .4 .2 26 .0 ■2 '.48 .C) 2 .0. PEAK-•0 0FE) T- EAK YRS i '.COL (CU-FT� WeerI 10/08/1996 11: 08 3913055 BAIMA HOLMBERG INC PAGE 10 OEHFORMANCE: INFLOW TARGET-OUTFLOW ACTUAL-OUTFLOW PK-5TAGE STORASL DESIGN HYD: 2 . 14 1 .80 .79 4 .00 2319 TEST HYD 1 ; 1 .51 �8­? S .6i i8so KST HYD 2 : 1 .05 2 .04 alitj I 3TRUCTURE DATA ; R/D-POWD 0 .0: 1 SIDE OLDREY PISER-HEAD POMD-BOTTOM-APEA YOP-ARE004 .S . ) STOP-DEPTH 3TORAGE-VOLUME 4 .00 FT 454 .5 SQ-PT 1424 . 1 SO-FT 1 .00 FT . 2B15 '.U-V - DOUBLE ORIFICE RESTRICTORs 01A ( INCHES) HT (FEET) 0-HAXVCFG) Th BOTTOM ORIFICE ; 2 .7al .&('! .4 1z" TOP ORIFICE : 2.77 3.55 TOUTING DATA ; 3TAGE (FT) DISCHARGE (CFS) STURAGECC(..J-FT) FERN-AREA (SO-FT) .40 0 1 .60 .25 306 .4 2 .0c, .213 b50.3 0 2 .40 .31 2 .GO 3.20 1494 &l 3 .5.5, lsa5 .5 !:) i .50 .85 i oar_ 0 1 .0"') 8321 .5 E.R6 24S7J.*.- 4 .21) 2.9E. 2555 .3 nU 4 .40 4 .74 2800 .51 .0 4 .5(:.i 5 . I Z-1 )YERAGE VERTICAL PWRMEABILITYi .0 MINUTESiINCH 11:08 3913055 BAIMA HOLMBERG INC PAGE 11 5 T PERFORMANCE : !NPLow TARGST-OUTFLUW ACTUAL-OUTFLOW PK-STAOE AURASE: DESIGN HYDc 1 .05 1 .05 4 .00 1175 TEST HYD it .74 .55 1 .5i TEST HYD al 05 STRUCTURE DATA : R/D-POND (2 -031 SIDE SLOPES; RISER-HEAD POND-BOTTOM-AREA TOP-AREA (El "F .It 0 STOR-DEPTH STORAGE-VOLUME 4 .00 F1' 6 WC .5 s Q__F'r 015 .5 00-FT 4 .00 FT ii7n CU-PT 500BLE ORIFICE RESTRICTOR : DIAVINCHES) HTWEET) Q -MAX &FG) ( BOTTOM ORIPICE : 2 .35 .0 C. .WO 77P-q TOP ORIFICEs 6 .25 754) �O L ROUTING DAIQ 3T AGE (FT) DISCHARGEWS) STORAGE4CU-FT) P&M-AREA CSO-FT) 00 X, 09 Q 20A) .16 14l zo . 1,9 2210; 320.0 2 .40 4402. 2 .01 2 55 584to 5 .0) .27 755 .Z; 0 .62i ?50 .1 .Cl 4 .00 .0 15* 1176 .9 0 4 . It) 1 .4S 1288 .Q 4 Wil) 2 .07 1301 .1:3 4 .40 3 .71 1435 .2 4 .50 4 .05 1505 .c.'j iVERAGE VERTICAL PERMEABILITY : .0 MINUTES/INCH HONI/sunm o, ; AlMleV2w53A MUNI& XV924f WELS1 UO2 09, t! MOST G91 --2. OW 11 COWT 981T 02"t, V MUST ST * T 021t 0" PURT 9st N ' t •01 OWN GO 00' t L, 354 W OVE Vb6c... 22' ONE l'L P? TT' 072 0" POE W , ON El TILEC-1 91 , ONT YEN tV 02-1 0Q,TY 60' ON 00" 004 W-MV38VAM w-n3mmus (SAM398WHOSIG (1039VA o -7011 wivo swino: "W * l -via 1ADIOTAITA? W13190 WONY in-no SOOT is Wt W-0s VtM 10-05 G* qL 13 0M., nwn!0A-39VAQ15 HIATC-dWS ( 103MMAM-401 V351-WOWDS-IN04 C9TH-AlTh 03dOIS 30TE T:0* 2) 9NOI-C/A ;Vivi sun ionyi;.. WE 0 * 2 ET ' Y " P t-I : � GAH lSJJ.. 001L 00" :E� 6b, T9, IT WH 191A 2EET 00" 1- 12" 92, ;aAH NOTSM 30UH01S RMIS-Ad momino-win mmll no.nsuvi MANI 133NUMAM3. ZT 30Vd DNI 9d3aW-10H VWIVS SSOCTSE 80 :TT 966T/80/OT • 10/08,11996 11: 08 3913055 BAIMA HOLMBERG INC PAGE 13 �1) FG k)L) AL% rkj7-t 2t�' Travezoidal Channel Analvein & Open Channel •- Uni form f loa► Woi"ksheet Namet Comment Solve For bottom Width Given Input DAtA ; Lent aide Slope . . 3-001 NO) kight ride Slope . S .00: 1 . (H ;V.j CCta:'iyl.'eL SlCoe . . . . J .11200 ft/i't 4.}P.pi'.1 I . . ■ . . . . . . . . . 0 0 a f I_ D i%charge ■ . . . . . . . 0 .15 5 C fir jamput ed Results : bottom Width . . . . 3 . 75 ft. Velocity 005 fps Flow Area . . . . . . . . 1 .56 V Flow Top Width . . . 1.71 rt Wetted Forimeter . n .28 ft Critical Depth . . . 0 .07 ft Critical slope . . . 4 .40 0 ;.t i"-'T0 df-- ti!:.Mber . . . . 0u08 Mow is SwUritical ) '- p5�v�tLt� c goon Channel f- Low Module , Yervion 2 .01 (0 199t; I-Saestad Methods , ink.: . * 27 IrGokside Rd * Waterbury , Ct 06702 4E 4 " Dul MOMW Oel%awH UQTS160 "alnpoW Moll JaUUSq; Ueog I ah VjfDTjTJnqM0 St . - - aqQls jewilla-D rno" t7 ' Wa lain ilay PaJIMN) 00A moh- ..i . . . . . . . long mol .? sdy sr- 0 ;7 * * , qjplm WQI;oq :Slinsay Paindwo-., qloacl . . . N . Pu WO- E lacals aws 101:!� (AIM) TAWE m "mmols opts ;+07 : vivo Incul UaAzip IS 7L-0 WIPIM W0110q SOP : juawwan 1SWUN Moll WJ017un . 1quuwu3 man ubisau I mwjeuv jauuv4j lVDIOZOUNm "rr,yPrx7 J�' a,v ci(V(5 1 (--i) 0 T 39Vd OHI gal ]&q-10H VNIVIE SSOETSC 80 :TT 966T,.--'80,/0T