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HomeMy WebLinkAboutSWP272861(1) BAIMA & HOLMBERG INC. DRAINAGE REPORT FOR DUVALL COURT SHORT PLAT March 10, 2000 Baima & Holmberg, Inc. Job No. 1673-002 1 OY ti?i 1S;a� � O I13s2 4 Prepared for: Joe Pruss ExP!REs �t l39 od 21305 NE 61" Place Redmond, WA 98053 ,ITY OF RENTON RECEIVED JUN 0 9 2000 :;06 fOINM SERVICE LUACO -acHaL UOW4020-- 100 FRONT STREET SOUTH • ISSAQUAH • WASHINGTON • 98027-3817 • (425)392-0250 • (425) 391-3055 Ln 3S r r v ,SNOAI Id H1Si�I `J` A Iy < 4y�2x ti, N N 33 AV �� IS 9� 7s nv ti 3N 1aM�x ,'U ''' < " �� CD ,4M I wy noon s N s � ®,— N 3N'AY 3N ld WY lllon o zrt 3S W AV N ONE AV N aNz i 3N t Q YI�I(1�OH f AYF- I 1 N » <k acfi{ , ttl A a�dl Ol3I .._Snv-.. 1StvT �� �,1 .�; JN .. rii,-"t. S'. 'V }—17 T� N I N j g A y a ;. w v ra _ ,, '.• . �`� :r, �, I�lObI r;���_ UJIV,,l,. W W— — IS'AY NlEltii S I: s „ ! I c/•, ✓�/.': x N y 7� AV YA .m. W H18CT AMU _ + WN{✓�~ 3N...., /l Y w. 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Q� F F 1— QL Z �� �� r-' x � )Q` .t1U1NOlt<.N F� • 0. �J x ' � ry ��—{ r l ,r., 01 Pt)'1T C7 , :-1 N: t\ 1;14.,,;� ;; c'�-' ,c= C �`• '�'. 4� d, r 3N VONVW } If =` I�J.31Qt1M.rAi>i�.LLJ' LLJ.:`ii c) C-I,y r � .. 1 a J �V N N c�etl{Y/dkbc�'' V AV ° 1 to- p r �WqD AV uc 'V ./""'•.. ,.fry _ S • . ..,n-. 'n AI �---- ......__.,_ •� PROJECT OVERVIEW This project involves subdividing a 0.45-acre parcel into three single-family residential lots. The site is located along the east side of 138th Avenue Southeast in the NW '/4 of Section 3 of Township 23 North, Range 5 East. The existing conditions consist of heavy brush ground cover with underlying Alderwood soils. The site slopes east at approximately 2-6%. UPSTREAM TRIBUTARY AREA Approximately 0.06 acres of upstream area drains onto the site. The upstream tributary area is comprised of lawns in single family-residential lots located south and north of the site. There are no apparent drainage problems associated with these upstream flows. LEVEL 1 DRAINAGE ANALYSIS A shallow swale conveys onsite runoff east to the adjacent property. From the site's east property line, the runoff continues east approximately 300-feet (A) to a heavily vegetated drainage channel. The drainage channel flows south approximately 450-feet (B) to a 12-inch diameter inlet pipe. The drainage channel slopes at approximately 1-3% and has an approximate bottom width and depth of 6-feet and 1.5-feet. Along this drainage path, the channel crosses a gravel road in a 12-inch diameter culvert. Between the culvert and pipe inlet the channel flows along the bottom of a small ravine. From the pipe inlet, the runoff flows southeasterly approximately 15-feet (C) to a trash rack structure. Then, the runoff continues southeasterly approximately 500-feet (D) in an 18-inch diameter pipe to what appears to be a water quality\detention pond. Along this portion of the drainage course the runoff flows through two catch basins. A '/4 mile from the site is near the middle of the pond (E). The pond outlets at its south end crossing Sunsett Boulevard and discharges above Honey Creek. There are no apparent drainage problems along this downstream drainage path. The proposed storm system consists of collecting on-site runoff and conveying it to an onsite level spreader. Due to the small size of this project, it should not cause adverse problems downstream. Lu �, i � I I // EXIST. 1 N I BRICK SIGNAGE W x EXIST. I YARD DRAIN / I Q I E IST. I J I 50' CURB & GUTTER N EXIST. - II I �� �I POWER VAULT I I I � / 0 t I SSK H / MH I RIM = 47 0 / RIM = 427.65 I IN I = 41335 / / EXIST7 . FENCE RI INV = 413.05 S I / // I a� FND , NAIL &' :;•�. 16" IWASHE \ 6' \ / `-----427- PROPOSE 6' \\ I // C NCRETE SIDEWALK «; / j LOT 1 SLOT 2 /� 3_,6 /// LOT 3/ / PROP, SED VERTICALS C RB &GUTTER EXIST. I / EDGE OFF ;; ; I\ PAVE EN / } ;L•.; ,a" \ `�► y SC��14/,/-/r �p 20' I ,,..E ''.f •\ I \\ I PROPOSED I ` 'r I 20' �URB CUTI ! \ \ _ _ I I \ / _ /ter�6" ROOF DRAIN'J �'� — � — _ _ © 0.50% MINI TYP. � I I / 26' ACCESS & + ----J 10.. UTILITY.EASEMET�'1+I0-0 �\ ?+}2 s.,. _ •, \ 4.5'-12'SD-@ 0.4?4s%Nb 20E ' 0+7 ROAD ue 6.. //, / 5' EVESPRADER x so, \ / INV = 422.00 0 I g imol --�� I I 1 TO BE EDI ATED I I I x 30" 3°,,r _1 I TO TH CI Y OF RENTON I I ti� / I 20' GRAVEL DRIVE / C '- FOR R AD AY PURPOSESI i � / / CB 1 TYPE-1 STA 1+61, 7'RT I I - --------- // RIM = 424.70 I I I TAPER TO HOUSE INV = 422.20 N 1 I I EXIST. ASPHALT i O 5:1 r'� tA SE 9 t 1'• (/ �'C -III 9 71 '• ♦ '\`1� �'�`` •♦ Otr1�S-� \ �:',♦. r ff '1 pill 1 14 11 ;� y t �-1 `' Pl�911. •9ti-1°•\ .'i� `'`1\7.G��F 9,6/-iy,' ;; ,` ,♦ 9�'C 9�G1-32 1 l 434 r � \ JI 1) \ `••\. V 226 !f ..GLM♦ r I .E •, 9J3-8, ,ES-11� 3-7 � J � �9=S: �`•\, 9l3-3 ,•.l \ ..\ •\', , ! , \ ;. f 1 NA ', ! 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"< ,:°U • < 1 t'1••1 w a. r:A l l 'C ? r>.. •� C•R , i�2" p `II£I s 'cc. a� ^a ■ ` iG�.ix / t:- •'i .. "� •: .'... rr_ xr. Cx 3x _` ■ ; gy^1�5.k �r t f1x .'. �9.� _., / ..4'.. 1 c ° } ■ .> r 1'..�' ,` ...i Y °rz_'• rF .0 °Yxt cyr AgC ..�nx R7� / •. f y,..• x pp >. �, ■ .� • ym • R� ! � :. df5 a�� .: . EV i.� ; /'� � � `C •• i .5 KF .� is ? T � . • � .^���ny._ 3 � x<; .lx.t`.. r /,w�-` 1 1 S e • ..; r c is j. � T j$T'r" !f-.: ; y .R d O ■ Y tJ 1 • 1 A��77'D ,■ :, x Q i Cr �s . ■ � F > ■ 1 1,.• ! lJ . _.o ." ;• O • 4 Esc.. s--. ° d A ttC. -'i > d v � O � r w■ • to S dt ••%• R rvr1r, ���� (-• _, Traile Bt 7,7-77 - • 1 FVC g r MIND (vjI%A O • 4/7 I 11 1 l •■ t a X433 1 • �I e. r —�� i e t a • I a f`k • ; c ,y T 1 a S `� it�I � .F�' � LJ EXIST. BRICK SIGNAGE L1J / \ x EXIST. / 1 1 YARD DRAIN E IST. I 50' CURB & GUTTER J Q I c Exlsr. > I I 1 `� / POWER VAULT I / ❑ I SS6 H / SSMH I RIM = 427. 0 / RIM = 427.65 I IN I = 413. 5 / / EXIST. FENCE INV = 413.05 I -42s- FND I ^--aa NAIL IWASHE \ I 6.. G_vb PROPOSE 6 C NCRETE SIDEWALK I / / / i ` / LOT 2 / 3_15' // LOT 3/ j LOT 1 / PROP' S�D VERTICAL \6 g' C RBr GUTTER I / F I / / / ry. I y i�4? EXIST // l EDGE OFF — foop PAVEMEN ` _ ';ir1�o / 20' Iiz•:._ PROPOSEDI 20' URB CUT I \ � I I @ 0.�0% M NAB TYP. / ~ 'LE ACCESS _ 0+0�0 _ / 0+ S_ / O Fo rUTILITY EASEMENT +60r.�.��s 1+25_'NEW 20' }' 45'-12"SD�p 0.44y, f ROAD I / 5' LEVEL SPREADER x TOP = 423.00 INV = 422.00 / ` \ x 30 \ I 1 TH Cl Y OF R�NTON I I 30,11, 1 I R AD AY PURPOSES I 20' GRAVEL DRIVE I / � i" // / CB 1 TYPE-1 i I v — ---------—J L / // / STA 1+61, 7'RT I I / RIM = 424.70 En I I TAPER TO INV = 422.20 HOUSE � " EXIST. ASPHALT o I / 3 @ 5:1 �" r .k JOB /G 7 3—ay2 BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE ... .... ... ........._........... .... . ... 103 z, ........ . S�.�L _ lac �9/�/e.%. d��1 ./rS.p/r�/vs, Cu. A � o =..3- 9s ..... ........... . ....... .. ... .... ..... .....:...... ° : ...... .... ..... ...... .. .. . .... .... ...... ...... y{... ........ .... ....:.. �¢ G.. ..S. G .°...... .... ...... ...... ........... _L /.. � . _.. ... ..... .._. P �s�, .. f' .............. . ..... ...... .. .. .... _. ..... ..... v- . .. . .....c /O t`9' �t/ ... St�f� 2Y A _ Grp d/ �1✓= - .r% . q2 ^ m, vG c�S PRODUCT 204-1(Single Sheets)205-1(Padded) "�TXW A 1673.hyd ---------------------------------------------------------------------- ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 2-YEAR 24-HOUR STORM **** 2.60" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .4 81.0 .0 98.0 40.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .4 81.0 .0 98.0 40.0 4� --PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) 06 8.00 1646---A�----------------------------------------------------------- ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 10-YEAR 24-HOUR STORM **** 2.95" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .4 81.0 .0 98.0 40.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .4 81.0 .0 98.0 40.0 Mt -PEAK-Q(CFS) T-PEAK(HRS) VOL(08 2070 o ---- ---------------- ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 100-YEAR 24-HOUR STORM **** 3.95" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .4 81.0 .0 98.0 40.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .4 81.0 .0 98.0 40.0 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) .14 8.00 3372 own ft 00 Page 1 /111 /// Lf� EXIST. BRICK SIGNAGE W 1 x EXIST. 1 I YARD DRAIN Q i 1 1 E IST. --� I 1 50' CURB & GUTTER I i I co - EXIST. 1 i� POWER VAULT 0 I SS H I SSMH RIM = 427. 0 I RIM = 427.65 I IN I = 46. 5 / EXIST. FENCE i INV = 413.05 S I I / _.._............... / I _428' FND NAIL & IWASHE \ I a6 \ 6' 1 I -427--� /�i� /� PROPOSE f� 6' \ / / C NCRETE SIDEWALK I �/ / LOT 2 3-16" LOT 3/ LOT 1 pp' S VERTICAL C RB &\GUTTERIV EXIST. N EDGE OF\ PAVE EN � / a: �, to" p?A I 20' I / J, / :\ / _ i I �o'z5-\ PROPOSED I I f ROOF DR A4I N20' �URB CUT T YP�.50% MIN. �I I u6s I I LE ACCESS . � � � � to.. o+00 / 0+ 5 OJI, U 'U t+co 1+25 t 45'-12 5D ® 0.44% NEW V /� n \ f 75 � sZs�6" / 5' LEVEL SPREADER x TOP = 423.00 >F_ = s.ot I INV = 422.00 1 I � I I 0 TO BE EDI ATED I I I x 30" TO TH CI Y OF R�NTON I ► �� j 30"°�r I I 20' GRAVEL DRIVE / ' 'l FOR R AD AY PURPOSESI I / / / CB 1 TYPE-1 -----—� STA 1+61, 7'R7 I I i RIM = 424.70 I I TAPER TO HOUSE INV = 422.20� I I I EXIST. ASPHALT 5:.1 �' JOB BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South ISSAQUAH, WASHINGTON 98027-3817 CALCULATED BY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE . fG fir» /- ,_ .. .............f1C4 -SS_..�v/�. ....... .......... .. 4.. vC Z— .................._ . . .......... t .....°...................... / vv F- ... ... ... .. ... Grr! ..........' .......... ... .. —7 .SUf�I`�f2 ..... a . 6 ... ... 05 l/Ski✓6 . Zov ............. S�.�rj2< ✓TGvl .. ,........ :..... ram_. . O,3gcF3 PRODUCT 204-1(Single Sheets)205-1(Padded) AWAIT 1673.hyd ---------------------------------------------------------------------- ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 2-YEAR 24-HOUR STORM **** 2.60" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .2 86.0 .2 98.0 5.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .2 86.0 .2 98.0 5.0 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) .23 7.67 3037 ------ ----------------------------------------------------------- ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 10-YEAR 24-HOUR STORM **** 2.95" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .2 86.0 .2 98.0 5.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .2 86.0 .2 98.0 5.0 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) .27 7.67 3563 40-----J�------------------------------------------------------------ ******************** S.C.S. TYPE-lA DISTRIBUTION ******************** ********* 100-YEAR 24-HOUR STORM **** 3.95" TOTAL PRECIP. ********* ---------------------------------------------------------------------- ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1 .2 86.0 .2 98.0 5.0 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .4 .2 86.0 .2 98.0 5.0 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) .39 7.67 5099 maim Page 1 JOB BAIMA & HOLMBERG, INC. SHEET NO. OF 100 Front Street South ISSAQUAH, WASHINGTON 98027-3817 CALCULATED BY DATE (425) 392.0250 FAX (425) 391.3055 CHECKED BY DATE SCALE �e T�i-�.. .v!-,,. .... ��a.. D•3f :.................... .......................... :...... �S SS.....�s/ral' -h<� Z'/1� ', / ...., .... ........ .. Z �T,... . ,7�r1TG ..........:...... .. . . PRODUCT 204-1(Single Sheets)205-1(PaMed) i` �. 1 � '✓ � � f� '�