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Specifications sif-zp21-o0od ( AAI afghan associates,inc. 7 /i1,3" S! N,PCvatvle.3 t rr ENGINEERING Kiddie Academ - Ti • ard STORMWATER REPORT & CALCULATIONS 16145 Upper Boones Ferry Rd Tigard, Oregon ED RAGe,v OTC 411411GE Carl' 1020 C1-iN(O pV S ON 5 l E. 1 o co I Pt ,:61301 Z-t Revised December 6th, 2020 Revised November 16th, 2020 May 21th, 2020 The information contained in this report was prepared by and under direct supervision of the undersigned: Craig Harris, PE AAI Engineering 4875 S.W. Griffith Drive Suite 300 Beaverton, Oregon 97005 PH 503.620.3030 FX 503.620.5539 johnm@aaieng.com AAI Project Number: A20043.11 iii fi I afghan associates,inc. ENGINEERING Kiddie Academ - Ti • and STORMWATER REPORT & CALCULATIONS 16145 Upper Boones Ferry Rd Tigard, Oregon PRoE �,-' . !� t N w= ,'i P\ 51 1 .J• al 40, »,.o Revised December 6th, 2020 Revised November 16th, 2020 May 21th, 2020 The information contained in this report was prepared by and under direct supervision of the undersigned: Craig Harris, PE AAI Engineering 4875 S.W. Griffith Drive Su ite 300 Beaverton, Oregon 97005 PH 503.620.3030 FX 503.620.5539 johnm@aaieng.com AAI Project Number: A20043.11 KIDDIE ACADEMY - TIGARD Table of Contents I. Project Summary ............................................ 3 II. Stormwater Design 3 III. Operations and Maintenance 4 IV. Engineering Conclusion ,,,,,, 4 Appendices Appendix A Existing Conditions Appendix B Hardscape Plan Appendix C Utility Plans Appendix D Conveyance Calculations Appendix E HydroCAD Calculations Appendix E Operations and Maintenance 2 w,kFf. i8dikttkidbb4kkxftkt6ts:.rte2+tsrEiMxi1zeA+sxEir ftHEa{aaNrMtMetsir#fzeupsrotua.sasaxsttserFrrsrrosnesrmxau;»nsek....eew*+nwrnsrmsmvmxas..smrro«.««....rw....:.>u....rsa,... .... ..., „».�..<............._... ._._„.._. .._, .__ ,_.._..... KIDDIE ACADEMY - TIGARD .rrr I. Project Summary The proposed project is located at 16145 SW Upper Boones Ferry Road in Tigard, Oregon. The total site area is approximately 53,810 SF and the existing site is predominantly hard packed gravel. See Appendix A— Existing Conditions. The onsite project will consist of the construction of a 10,682 SF building, 20,412 SF of AC parking with associated pedestrian pathways and utilities. The post construction site will contain 37,141 sf of impervious area and 16,669 sf of landscaping. Offsite public frontage improvements are planned on the northwest side of SW Upper Boones Ferry. The improvements include the relocation of a curb and a public sidewalk. See Appendix B — Hardscape Plan. Water quality systems will also be constructed to manage runoff from proposed building and proposed parking areas and sidewalks. The stormwater management required for this project will be designed according to the requirements outlined in the "Design and Construction Standards" by Clean Water Services, dated April 2019. See Appendix C — Utility Plans. Onsite stormwater management is achieved through Peak Flow Match Detention per section 4.08.6 through the use of detention piping and a flow control manhole. See Appendix D—Conveyance Calculations See Appendix E — Hydro CAD Calculations II. Stormwater Design The site is a medium sized project (more than 12,000 SF but less than 80,000 SF), is in Development Class "Developed" and Risk Level "Medium" as it ultimately discharges into Fanno Creek which is a medium risk receiveing water body at the point of discharge and for a distance greater than a 1/4 mile downstream. This project is a category 2 and therefore we chose to meet Peak Flow Matching Detention per Section 4.08.6.c. Stormwater management will be accomplished through the use of roof drains and catch basins that then lead to 600 LF of 48" CMP pipe and a flow control manhole. Through this method, runoff from the improved site will be matched to the same or lower rates when compared to the existing site. See Appendix C — Utility Plan. 3 KIDDIE ACADEMY - TIGARD III. Operation and Maintenance See Appendix F— Operation and Maintenance. tV. Engineering Conclusion Based on the requirements of the Clean Water Services R&O 17-05 "Design and Construction Standards", the proposed site facilities are adequately designed to manage the proposed development conditions 4 KIDDIE ACADEMY - TIGARD Appendix A Existing Conditions } } { . { } } . . . . . . 5 ( � \ } � � } � / SFEET NOTES //! l LEGEND NN EN/�\\ /y =SURVEY MONUMT *�' �+'. O -WATER VALVE Q -WATER METER / \ �i aJ iX • -aEAN OUT wow \ /' \ D I -IRRIGATION Format VALVE r ', '+'\ E \. A -OAS VALVE / 1 f e -GA.S IETER l!/ 1• �'„ . ,t�¢y � IS -MAIL BOX / 9.' I YJ * -LUMINAIRE /. ID -TV RISER / `� � / t \ +• C -SIGNAL JUNCTION BOX R.1.57.6B' / ' ri ` \ E*S^prSl• // "Sf '\ ../' E, .. . -ELECTRIC JUNCTION BO% R+�E15LT Jf - ``.f.A J/ t •R, -UTILITY POLE fM.156J5' i'/'t .N.' \ -GUT ANCHOR CB.N19°RB534 \ /, f/ / 1\ (y , E- -FIRE HYDRANT j /f . \ ff._ .. f/\'�4y rf ! .. � "Cr* _UN /j • /t fr-: f ';',/,r� / ,0. 4, \\ —e BM t -UND91EGR�SE TRIICUNKLINNI.OGTION jN LINE ,, ,..../:.,/ /`./ /. / ` x \\ / - ss—ST— UNDERGROUND SANITARY SEWER (fJ( r '/ , { /..." i / , —SS— UNDERGROUND SANITARY U EN U/@ �f yy ,T— -UNDEtGRWMD tEIEPNONE LINE //- If /l /f li VA —TY— i-v VNDPRGNORGNDCANEWUNE1 • d\ —W— UNDERGROUND WRIER UNE f f / F`j ^r// \ f/ / • Y \ \ - - VNDERGROIRRONANRAL6A5UNE/ f f " // If �, / i 'v...�`—'�^ �„`l _04— OVERHEM UtILT1YUNE010 (f/f •dam. / * .A + � _$ ems uHE / }:• I f f` .� • �\ \\. �\ \ 5MN ^SAMMIE,S[MEAMANODE -. N ✓, f / / \ .'1� $ D VV -STORM DRAIN MAWIOIE / •/" '.,. / / ••.I \ \ \\ RB •CATCH BASIN (/f f / �/ >` / f f �${ �---,.. aila'`, 44' \ FI -EIERn INLET wXA /f 1 ' // ff 1-..• 1 f/ / rr"��"" \ .. *'. \ CONCRETE ENGINE RINGI i �ffjjj///,11 y / /l i r fr1\414 —_ • v \` ,oEaou«>TREE I / /.j ., JY,�(\/ f t/ ,' \ , \ • j . ! -EVERGREEN 7REE AFAR) • fIyr /•.rw' fl f f y f \\ � ,Bhp \\\ EXAMPLE ` 61 ../ f /`Al/ V` i�. � i, �A\ Duren No.ov laEEs TYPE FROM OME EASE ' I 1 f` / C \,, N._ // 1 4. ... • / / \ ,t, ,\'' _ •*\ \\```i`\ Fe11nAw sw AR EeBx for '''.�1 ff ! r ( ' p: 1 i \ TEE: 501.111.11r1 /." -,..Y f ) ZE * `„jl:, w*'\ rA.Rc •ra.l a.Esr! {, r 4. a • \ •.41f. \ w'Ikt4 ` f v A:), /vim .' Ct in \ s\� \ 1 \/N \i!\\ICE '/J a 44\ J \\ \`AC-\ 1 \ \1 \\\ 1 ! ¢ 1-.• N . .-.... \ \ S-, \ . -"'w A )1111(,,, / / + l''»t wr \.\ 1,, : ///�,e e je. K , / Al:a d. Q �\ 04,/ Lll 5. J ,� #.. / # 4tq , /� Z lit 1— / 1 r / /,,//'✓` \I .0 ,/ �_ Y \ / /' ,ram Lo E . ' a\ \ ✓/7 /4/J fit. CD �/ NOR711 `t r ,II� 0 .-- \ \ 4 /! _ . , . l' ` .// II'R .ILL , ° \,,/ ' f ,, ' - B A / i 4 w w /♦ // /f (/! s GY. • y .% rt t \ 1 Lam //' / 4/f/f O tNT) NonPO E EXISTING, f I 5, t'4 / / ,, ' CONDITIONS S /, y ' /,i / CO.2,l. JOB NO.100142.01 KIDDIE ACADEMY - TIGARD tow Appendix B Hardscape Plan 6 i I i i SHEET NOTES \ 'P4/g. 1. SEE ARCHITECTURAL PLANS FOR ADDITIONAL SITE -t N. INFORMATION. 2 44 ^'k\ 2 URRENTTHE TAPPROVEDHCONSTRUCTION DOCUMENTSHAVE A FULL SET OFTME i INCLUDING ADDENDA ON THE PRO.ECT SITE AT ALL TIMES. L/r, .rYF,�q. \ 3. THE CONTRACTOR SHALL KEEP 1HE ENGINEER AND 9:4 Ho, \\, i11 vVA JURISDICTION INFORMED OF CONSTRUCTION PROGRESS TO [Looms y,; .I / 1'I .\,*, FACILITATE SITE OBSERVATIONS AT REQUIRED INTERVALS. � \ 24—HOUR NOTICE IS REQUIRED. / 0 le -- ' ' -',,, N. ....6e,„ C) CONSTRUCTION NOTES l Y , "/ A� �� BRA ''\\ t INSTALL CURB.PER DETAIL 3/C4.1 �° / , — / 'r/ Avg 2 INSTALL AC.PER DETAIL 2/C4.1 r s \ / �, y„ / \ ,\ / ] \ \ 3 INSTALL STRIPING,DESIGN BY OTHERS g % ' r. s �\ 4 INSTALL ADA PARKING,PER DETAIL 4/C41 / ��\ 5 INSTALL ADA RAMP TYPE 1,PER DETAIL 7/C4.1 AA '� \' ,� -v ", , 8 INSTALL ADA RAMP TYPE 2,PER DETAILS 8/C41 2 � F f ,e "N'N.,Ns:* 7 INSTALL ADA RAMP'TYPE 3,PER DETAILS 9/C47 "4 J/ 8 INSTALL WALL,DESIGN BY OTHERS `�' 'x '`'+.. I \\\ o 9 INSTALL TRASH ENCLOSURE,DESIGN By OTHERS K ' / ,' \ ; 10 INSTALL BIKE RACK,DESIGN BY OTHERS M d / �`'�.,� '* ,. / vv� 1y\'4, 11 INSTALL SIDEWALK,PER DETAIL 1/C41 1 gy / ._fa „'\d / �'� \V A,0 \�'b,� 12 INSTALL CONCRETE PAD.DESIGN BY OTHERS 9 a i if ,�rf r,{ \\\\ 13 INSTALL FENCE, DESIGN BY OTHERS / fj I { /f \. , \ k c LEGEND /k J Om*too rf@ /'J / ¢ \ Y t ' V "� t - l 0 '4\ \ N,6‹.),e, PROPERTY LINE ——— ---- / ', '", °z' SU fSURFACING DEWAUC ........,a.:", vvCONCRETE r. \ \ e / // ,, / 1f 1l1.: 11110 `\° 4,,, .`i\.,\� \4��\ ASPHALT SURFACING .1, " w \ , 0 R st l / // �, ,�vv �'"`-, "10,,,,, '4 �r // .. ,^' N.\ \ h+ \. 16••s»,Aa aft Mott xw • #�',e,-.,�/ E lf� / E� •;A V AV \\ roext�Mo, on¢aoe .ar. Ny,.,p /'r A / �1 v1 V�N. N. n••.canal.c.s an Ff ,+f A \N. 'R Y \" s. \ � \ `PROPOSED ;;+ \ , • ..*, a� tiBUILDING CK4# o \ ',,, 9/ '', /... / ., 1./... .0.. a 7"r N, ' ,4,,, , ... , , N v f 's.%��in s o rC�C 0 6T / m o f / z a LJ 0 ..,./ r go/ O / / w o -' / / G try x 0 //, may° O 2 5 PNr /. GRAPH°SCALE tl `may i t V Sri / : a • n f ° f £g Il /:: 'r ' I �Jo . f►' c r r 11 . 20 NM HARDSCA PEy /.T( PLAN// ;# / . 2 ' , ° C 1 .0 y JOB NO.190142.01 -' -- " ---------.....m•-.... ...... xannas+aerux.rnxtiaettn ii3UUa<n lIUUUIUkh4 4et1NUiUf! 4ir ea.tvlN i 1}S.vil4Uila3!{UUiwMlUHfliNl3seuUasN33Wab 1lasetxetaa fnfUwi�. KIDDIE ACADEMY - TIGARD Appendix C Utility Plans 7 SHEET NOTES 456.5) 't * \ 1. ALL SANITARY PIPING SHALL BE PVC 3034 OR APPROVED 4� \ EQUAL UNLESS NOTED OTHERWISE Y'Y4 • 2 THIS PLAN 15 GENERALLY DIAGRAMMATIC. IT DOES NOT i \\ SHOW EVERY JOINT,BEND. FITTING.OR ACCESSORY V ,1 REQUIREDA. FOR CONSTRUCTION. ^"'` t r \ 3. CLEAN OUTS SHALL BE INSTALLED IN CONFORMANCE WITH T ` \\ UPC CHAPTER SEVEN, SECTION 707 AND SECTION 719. I twwWw.6[13n3=1I THIS PLAN MAY NOT SHOW ALL REQUIRED CLEAN OUTS. / \ �` \ 4. 00MESTIC WATER AND FIRE ONES AND ACCESSORIES t py .7"-L. \\ INSTALLED BY ABETWEEN THE AUCFPISSETER D PLUMBER EMPLOYED BY A/ /. R AND THE BUILDING SHALL BE x j* "�„�-f`' UCENSED PLUMBING CONTRACTOR. s '<� l 5. UTILITIES WITHIN FIVE FEET OF A BUILDING SHALL BE �` CONSTRUCTED OF MATERIALS APPROVED FOR INTERIOR # 14 IF- --1 . USE AS DESCRIBED IN THE CURRENT EDITION OF THE UPC. }� f `T1 ,, ,� 6 LF-6'SDq, 6. INLETS AND OUTLETS TO ON-SITE MANHOLES SHALL HAVE {f t \ '"D- r FLEXIBLE CONNECTION NO CLOSER THAN 12'AIC NO f/= .3,7) ^ W.-133.42 FARTHER THAN 36'FROM THE MANHOLE. 2 / `\ 60 LF-6^� • 7. CONTRACTOR TO VERIFY SANITARY AND WATER SIZING SO CB- AND INVERTS WITH APPROVED PLUMBING PLANS PRIOR TO / RAM-TAT ` 5-O.65X > ORDERING MATERIALS OR BEGINNING CONSTRUCTION OF E 6'OtUT-142.1J(SE)_ I 4� • C \'..\ SAID UTILITIES. t� fY! ♦ J t9 LF $'SD // 93 LF-.6D ♦ 5--4.5123 U-6'SDf jJ \ S-YT 24x'ti" SD FCMH-01LABEL..s RRA-13S.30 \ *SE 1/-12'SC N. \ $ 12"IN=134.30(SE) PPE LABELS\\ ,.� \\• `'t,• a\... 5+0. 16 12'OUT-134.30(NW) \ \ UTILITY LENGTH I fi SEi '` a N.N. bf t3-$-SD 1 1 UTWTY SIZE 1 - to �, 141.68 NE) 119,.., \ 0,, LC-6`5 s K C CUT>•141.$$jNE}✓ 1 \V s.aoaz Jff 3 3 9 Lf-12'SD 11 .�y .1{ \ XXLF-10('XX--UTILITY TYPE f \-T37.;/ \ +` 1 ... \ * 1,lF--S'5^w, S=X.XX% SLOPE(YRiERE APPUCABI£) �f ' S-2.OTTL ` ��SSSEN61w6EruNs 1L _ - ✓ !30 tF 5"SO - . !.-135.2$SS O CROSSINGSTRUCTIJFE U 7"siS0 SFCAi-Ot 11 \ FT f 5--Q95% 17 LF- Qom, 2=138.56 SD O CROSSING UTILITY TYPE(fP-FIRE PROTECTION,^rSANITARY, 5-O.76x"V -' 4 if- B"SD SD-STORM DRAINAGE, W-WATER) j R1iMt4Q5 { ni SO SFCB TO2 SD O CROSSINGS+-134.43 '^4�� -136,53 5+.0.655 STRUCTURE TYPE(SEE BELOW) IE 6"OUT-138.21 (SE)/ .. RIM 144 01 SS O CROSSING IE-138,34 -- $If-B'S0 \\\ .. IE 6"IN-141.71 (NW) 48"DETENTION'IE-154 43 4AL,• +t. Q6"J1L \\ P y/• {/ /- tE 6`OUT-147.77 (5£) 6'MANIFOLD IE=134.45.. . � •,+M`. f t•Nip, =TSB,44"=`N"a, v v �l \ XX XX-XX---ID NUMBER (WHERE APPLICABLE) J4 LF-8"SO { ` 48"DETENTION IE-134.43 / +� B LF- B"SO \\\ RIM=XX.XX-STRUCTURE INFO(WHERE APPLICABLE) Y t 5:O,65x y /' 'Ty�/f INLET PIPE IE-136.43 / ,//f5+0.63% \ STRUCTURE TYPES r i!- > > f r' � ' '" TE-134.44 48"DETENTION \. *� /{1 {1 /y l i // khil I 4 „ _ / / \ \ TYPE DESCRIPTION /T8 U"-B"50 A / / / 136.44 INLET PIPE `� ! JF' \ 5-5.3$k // •/ / �� l SF BACKFLOW PER DETAIL 4/C4.2 / { y / ` `� / -f- 41 LF-/6�Sr / /r'�� E,.ftE-\73f.S+t NB'DETENTION \\ \mac,\ FDC3 H FIRE DEPARTMENTMANHOLE NER OPER DETAIL 3 C4.2 O / �.. \ FIT FIRE HYDRANT PER DETAIL 542 C4.3 EK f�{> { \ 4 / y{� r' 67 LF 6"SLI 8-2,•• of"/,'.1"/ lE-f34,:541N1ET PIPE ,\ C4.2 I rcri c*ue ,y / y r r v s-2.72x / / CB CATCH BASIN PER DETAIL /}�* / �.„- tn. ,.+` SD VfOMH Ot h/�/f/ IE 734.54 LE PIPE •"\ 11lEERING a { / "7 RIM=144 69 • ffI y / \ \\ \ S / / r t r IE 6'IN-137.n ( - ��\ V ,{ /�/ v wv FV FIRE VAULT PER DETAIL 2/C4.2 N a N N I n G lc4 {\° / IE 6'IN-137.40 E) �IE-113:2439.37 - Of % / / .1/// '' \ \ �= \~ IBF IRRIGATION BACKFLOW ,uRtLARR, 01112.011ERIORs } - j f'{/� / <� II B'OUT-737.40(NE) S4 6"� / / �f \ 'w RD ROOF DRAIN CONNECTION / r'Y, .( / SID RD 1SD 4 toy / SFCB SINGLE FILTER CATCH BASIN PER DETAILS ON C4.4 Rw..»+e NW w1Tc 1m {�"" r t -.i� r E 143.20 JS t#r f t 4' K..,, > . .• / f / '*`• 1•• \\ WM WATER METER r c c.l e o a.a x..l xZ�a rfW1 !0,# `+ "i > f/ !fir RkM-OS- 02 ... j>// SD CB-03 \ `\ H WATER DETAIL 250ALAND 260 MANHOLE 0N SHEET W.3STANDARD _ / t / \ wfRr.c,641 RC.14RY `,/,,, 1 i IE 6'OUT-142.88(S) \'"` 7.. A // .''M-144.26 '+e 1! y �,. "1R 4 ....if / 6"CUT-142.34. \ .. 25 LF-6•SD ly r'r �' S.e3.05% SD RD ,. / ♦ 17 Lf-631/46. `SEy\. ly a E-1432O /J/5-0.95x 11 v\. E 134,90 46"DETENTION 1� � {y ( ( I \\, 75 LF�> SO RA / MM 1 12.•134,90'6"MANIFOLD Lf- B' �'. 1 \\ r,, SANITARY SEWER LINE SS SS \ E-143,20 ��O.99T / -\ \s \ rel. 1,// , \f ' \\\ WATER LINE --W W W 1 • v 35 LF- 6"SD y 1 ".6 A / f AWN `u� ' FIRE UNE --FP-FP-FP_.".FP--- 2B u $"+s ` // . f ''\L S. S-Q99x ''\ 5-19.73X /`N/ 1J`/ \ 1•.g,ryy � FDC LINE -FDC -FOC -FDC - Q `'` FF=145.70 � /I'// // 4 - '7A,t ''4• /' STORM UNE .woo } �� \\\\\\\ / .�/ 26 LF-1 Q �'\ 83LF-6-SAi31 lF-6"SD 1r+' W'fV-01t. r,.. W1 v s=2.7sf1 5..3.052 SO SfcS-Q3 � / IF--IM_anis dR \J STORM NOTES Oj IN' SO RD RIM=144.97 '40 �' WBF-011 \ 24 t INSTALL 600 LF OF 48"DETENTION PIPING. DETENTION u_ / W N\ E-143.20 IE 8'IN-147.67{NW) ^' t 1„\ PIPING TO BE INSTALLED WITH APPROXIMATELY 0.3%OF Z Z r ! y,I \ IE 8-OUT-141.67(SE) { 41,./0 -4.-ttok .n� �' •• > (�,�•: ' :N.` SLOPE O �' r� Q7 !}� r f J 26 LF- 1© t. 2 CONNECT TO EXISTING STORM UNE ? �-' COO 0 L ! 1E.143,220 '` - /SANRJIRY NOTES a < LU cc o jy` U) U 0_ 0- .r 141E-61 7LFf2'Mf '' W' -t / .1/ ,r ,-' 1 CONNECT TO EXISTING SEWER LINE a_ Q '� 9 Lf-4'W'' r` Y 2 SANITARY SEWER POINT OF CONNECTION TO BUILDING. W Q C.� Q , .. w 4. , - 34 IF-8'W 17 r. -6`. ¢ 7.LE 2.W CONTRACTOR TO VERIFY INVERT BEFORE INSTALLATION. Z W y5 F- • !� ‘ I ; , . ! r Ell WATER NOTES p ,,• , in $,, „ "• - : 4 1 CONNECT TO EXISTING WATER MAIN 2 y • ,• • ' ' y - �,7 2 FIRE PROTECTION POINT OF CONNECTION TO BUILDING Q0 3 - ++ ` • f, 4 3 DOMESTIC WATER SERVICE CONNECTION TO BUILDING 1- t •+! R 4 RELOCATE EXISTING PUBLIC FIRE HYDRANT §, . a - _ .0 vtft' f t✓` 4 MIRTH • + '7- CO r ~ s1+ .• - �I t... ,.�, } ,r MANIC 0CAl8 UTILITY PLAN gggggK. ,r t`1j' - 1actl-III/4M i JOB NO.190142.01 CONCRETE COLLAR. oS.UP. ir NOTE 1 3000 P51 CONCRETE fis OMIT IN NON-TRAFFIC HEAVY DUTY 28' MIN AREAS OR WHERE ; SQ. TRAFFIC GRATE. CONFLICTS WITH CURB t FE 6"MN. RIM-PER PLAN µ REBAR LOOP jj' vx"' RESURFACING MATCH ,ea - FLOW "' EKrSTING PAVEMENT PAVED UNPAVED TYP. f r SECTION AREAS I AREAS J? /"-PAVEMENT �G fir, EXISTING AC-N SAIWCAIT- I DETECTABLE - I F. 1 r� '" , ,} .1. ( mots 4,rxe'Tam I PAVEMENT \ LINE WARNING TAPE PLAN '` \ 1 -ems DU PORT IET € HINGED .Z UDPf1ThIR tt h- ,\h.•" $i '� . 't"Yi* '. vr.=,,L.y5 . C' -, NOTE 1 hN15N GRADE �,.±r �J a ..ilirf 4*.., .... �'. yvt t t> s 1RACE WIRE141 SS iiSEE �.}/� SQUARE a"ca. 12. '�Y' 'y? 4i*t,S'Z''` .: :. g R _j "--' \�h h .. .ti p.T."*" .tV' ,,Av�x ,'a yi' t ;;• j 66 ENGINEERED FILL D/2 }, v"x'1s:. .41.1..+Y' •4%e,'ez ' ?4 e-J-,' sf, �pI.1101 # '. t 1 a �, ,..�:: O"e t. - +4 .- „ k, THRUST BLOCK ,ry k FLow SECTION ' '",I ,J 1 TO VALVE NOT �x AND BOX 1. CONTRACTOR TO WIDEN EXCAVATION AS REQUIRED TO OBTAIN COMPACTION WITH 6 CONTRACTORS COMPACTION EQUIPMENT. at 6' 0 B' ICAiN61 gr�halr MIN. MIN, 2. 174"STEEL PLATE,BITUMINOUS COATED. AS MANUFACTURED BY GIBSON STEEL SECTION BASINS OR APPROVED EQUAL. 6A4'vEERttNG C) BASINS CATCH BASH "- „ TYPICAL PPE AND BACCFiLL �w ,e SCALE: NTS NOTES; SCALE NTS- 1. CONCRETE ANCHOR PAD TO BE 12"x12%6'THICK,UNLESS NOTED OTHERWISE. ELIMINATE IF INSTALLED IN CONCRETE PAVED AREA. 2. USE FLANGE OR THREADED FITTINGS. wy* .... 3. CONTRACTOR SHALL PROVIDE SINGLE CHECK VALVE AND BALL DRIP VALVE IN HARD SURFACE I LANDSCAPE AREA I=m, ' ti-O : £LE CONDUIT ACCESSIBLE LOCATION INSIDE DDCV VAULT. COORDINATE PATH PLUMBING. (' T sutE E PROVIDE TAMPER SWITCH,WRING TO Qi CAST IRON FRAME AND I MECHANICAL PLUG _ ' .E1111111MINIIIIMMISIi=c) . HEAP TO / FIRE DEPARTMENT CONNECTION (FDC) COVER TO FINISHED t WITH GASKET _ FIRE DEPT. Ca DUAL Per' GRADE IN PAVED AREAS RISER 0.D ON FRAME a; � NFPA 13 �O,N fl.S,H.A. t SCALE: NTS AC PVM'T OR CONC. PAVING + MIN, .. COIN.PER1 SET INT RCONCRETE F.e 24" SPOOF.FIG. x OR OTHER SURFACING 1 I LADDER 1 MW_ P£_ �� 3'.. 4"D_LP_ I 1 c4--wvf_.'. !'TL RETAINER GLAND j } l_' U -et` L i tow z'MIN. ,{ Ai'��3�� a_' 1 MAX. '.-r'irnizi r�t, "' _tit ti,= Ii + r� --Gw /Jr \til 6•MIN M /4 HOOP r``as.TEkEO 1N SONN1 RETAINER —._12•_. 6"MIN :... Qi FILL IN LOCATION ,� CUSTOMER SIDE ...::CONCRETE PAD. :arwLsu rngrc DAIMON AIN �111791. CLAM) MIN Q BILCO DOOR ONLY METER SIDES .,,+,�,,�42' 1.I1I •- _) - USED BY T V.WD& '��, k T�.N 7iCARD.BEAVERTON. 4"MIN. » s: t'FFOVIOE}#MIN. FAA: r a e.a s e.I r:r PLAN DELETE IF NOT IN I '_ ,r CLEARANCE FOR r r:,r 1 N a1 r e.COY �^-FINISH GRADE ----- VARIES.6'MIN. THIS AREA \\' .J}J CONCRETE PAD ♦I �/^ WHEN RAISED \ AND RISER PIPE I fi T` ! i PLAN RISER PIPE GASKET F, SEALS p CARSON METER � 'L "--WRING CONDUIT BOX(OR EQUAL) TRENCH BACKER./ TO 40 MIN. RETGI.ARAINEEI ..c.11� r.`` ' w..._ 4f i `� RETAINER GLAND a,e r"' WYE BRANCH L:�� { C i{ IKI0` `"'�� 2'FEHCO MODEL 8505 hUll, 24'MIN. / 45'BEND Q FLANGE NONSHRlNK COUBLE CHECK VALVE CLEARANCE CARRIER :.` �. COUPLING iZ' GROUT TAP SUPPORTS . ASSEMBLY FOR EQUAL) PIPE Q ADAPTOR MAN ,F SUMP W 2' .» INPLCWI UNE VALVE " -®..�"" 2DRAINOR1CU, 'n i (n'fir ii . — am` LL f ANCHOR TYP. SECTION `� SERVICE CONNECTION W ' i.74; + v ;; IF REWIRED Z Z (\ UTILITY VAULT OR EQUAL BILCO DOOR r)'s s , ,av 6'MIN. '•- O (� D.D.C. SIZE CRUSHED RACK CLEARANCE BEDDING MATERIAL U cc O WITH F.D.C. WITHOUT F.D.C. OR EQUAL = G d' BASE 6"MIN. 4 676- WA 577- WA J- SAL ELEVATION 1.CAST IRON FRAME AND COVER SHALL MEET H-20 LOAD REQUIREMENT. W CO Q t 6" 687- WA 676- WA J- 5AL ROTE; Z �' Q B' 5106-LA 6B7- WA JD- 3AL INSTALLATION SHOWN IS ONLY A SUGGESTION THE DISTANCE FROM BOTTOM OF 2.FOR CARRIER PIPE SIZE 6"W AND LESS,PROVIDE RISER PIPE SIZE TO MATCH Q DEVICE TO FINISH GRADE,FREEZE PROTECTION,AND CLEARANCE FOR TESTING& CARRIER PIPE. Li U d Q Y 10" 5106-LA 5106-LA JD- 3AL Lt s it INST REPAIR ARE ALLED Pt TEST CAS E MAJOR ��BELOW GROUND INSTALLATIONS(HO DISSAALAR 3.FOR CARRIER PIPE SIZE B'A AND LARGER, RISER PIPE SHALL BE 6"S.ATIONS FOR INSTALLATION. PLUGS TO BF ZED METALS).If FREEZE PROIECTIQN IS PROVIDED THE 24'MIN CI FARAN F MAY RF 1.-- DOU3LE DETECTOR CHECK Rr1NICETI 4 RISER PIPE MATERIAL TO MATCH CARRIER PIPE MATERIAL Q L5. n a C FIFE SERVICE VAULT W/ DRAIN TO GROUNDO DOUBLE CHECK BACKFLOW ASSEMBLY j�+T STANDARD CLEANOUf (COTG) CI Lr) k J SCALE: NTS SCALE: NTS SCALE: NTS .. CD k ) s 5 f r DETAILS C4.2 JOB NO.19014201 r i1 ►�t, ADJUSTABIF LOCK HOOK !� ��O♦ntY7�� _ WITH LOCK SCREW f+ 1 /�/ 4/0*, 4I 1, 54. i)k . k. owv AM Y pA.R00 yam ± I0CuRATION MIAs .. `•!,'/ OR TUBING (> TIL A way 1 D NTION FACILITY LIFT HANDLE •, F"1wM'[ 6 1 �ii�+'�� ATTACHMENT KMMtI/lj 7 1 l f:KPM€S.ej36/7071 MANHOLE ACCESS ELM[ itD Manz Mar FROM ABOVE ' MA DIA. LIFT HANDLE M Oarli Mwo ELAtl. t ^ Wjo SM$KE$Eoaun i O MANHOLE Mia y p 00,se) "' arEMMa1aM1$R+Eaa oM Ma DETAIL:a 1MiM.Ca Mans M$SasA°o EMmM sM1Ei Marta+�� _ WN-msx.OW)a7+aoe ._ _. ro M W N o• a.TMN B°'i00a MRODWecgl j �ra�s` E Mi tralt O it0•0,Mi ii ILI MAXIMUM OPENING • 9I0 _ IM OAF-N0010 OM. 0u11[fMMtlim MI Falt NION NAM -°' W WC o tlM OUThIT IiOLEC E 10 46' EEaI[MMAW aa1tT {-- *of 4-r rf0a' FRONT VIEW SOF VIEW Mlt .E.T+t 116 a>MEI `0 FT ' as. 1MI ,K Kam. SNOUT OIL—WATER—DEBRIS SEPARATOR WILT KU Pi ( - ancr anal asw>tat DPW N �+...-.l I. AIL Naas AM TOPS FOP ur W MM MI fum+EMU,s1M,cIUM9 41 I A :.. — I11661.S M Of AS en MEW MMuaocrr wa++crs.ow OR pA Ml M rLOAYAMS- ]EOM.SEC CLOSED Sara.,W al I. ALL Nac s MALL I[OaNKr6im OF MASS anMOIMD REM O$AMNIO OD A PLAN 0W^s Sr OM/M.Mut w (AMMO is Mk too CEL COAT O001011 not Wm A war a17a 7r 1 g FRONT SIDE /._I +0'wA SHEAR GATE DETAILS " MOOS A Lam"` 1 A M+�MW w Mm 040 liaTTMSwwa n 13 I $E On s.TN OYL4�T l IK S MO POWWOW w TIE WOOD BULL EC a1EMMID WY MOM PBS T; o .... !AS rut IMOJFACROWS IECO MRWA11aA e FRAME AND COVER man _ a loriaM a'DE HMO sail alas mWnw A O61AK£a 1S MT*.n�-LOCATION PER PLANS 460 STRUCTURE gt I VM.1.0mm SET IN MORTAR REFERS TO CENTER OF STRUCTURE L.ALL YMMM£=IONS MAL COIMMM TO THE.Ea NOIE OF EtNb:!:E£RBNG WO 0 MO APALWAI E MAI MOTO a s16 644 0LE 016166 a A 0 Al11FNNat son OVAL COM MOW HOOP WY NM.a T MO IMI.O0. wnAea-�e..^r.-,...n.,n,,� � RIM PER FINISHED GRADES A wlEWr a as`AOcas$N TO snac7aE Ca1M1a1111AMaN .,wp...,-_�_�^�-^,^^ mom. E O WW MO MI MEW ro yarn Tr GA 7. 1K swots a SC 31I606E NONE OE 1M00 6 oa*m sail 16 w-am.an ON GRADING PLAN 'HMO firma MO a¢a LOOK MON. OM WMM0Orr#61000E1 Ma ...x S YMO AK MOM.DEEM n0 iMKrt,ER®a1I Tr Ill 6110 ANON @ i -'I .._i am mime AVOWALS FM oust w a We mom Simi,K MbIIE0Y mama 10 SNOEPME M U.Mil Milt,CJ KafwA�aM.MNs 1. a ME SZE MO Panai a UE N M M A L aE IEIIMSMD KY THE AV :La MOOD EM{iplD.4a1�� ~7� v c l2-CONCRETE COLLAR swam s101 MLn MO CL-AosTMlr awn. 4, 6"NON THICKNESS MAU erf MI M re WMIFACTI EKS MOXAMOOASOM 37-MOM so'MAiMM } PD•MIA- ono a Pala a imams Man awl ME mama,ono sm C0gM1E a THE 'J AROUND FRAME.OR a MIMOMM NAIOMME rat'AC MOW aMI.sr pNAOm am 7S Y!L- MI.M a ia.a A SIWKTUIES MAIL par MTMM M1IOT) slol Ola$$K wary►71E a11M1t1111[ CAST INTO CONCRETE MOMS iW° I SIN OJT M NOT M'AM.WM a TTL4 a M Mal SE 11000 1u t ATTMM$ : WALKWAY a Its MMAw a SR MUM"mat Mt.mop M ammo awl M AME$RM&OETAL FM Vasa. IS Tp1 040E a P11ga®Ms M UFACI Samain raTAILAWS Oa MAT OK Io5O. N IMrN$MOM MO fart w 1COM MA1OSM. IMMIMMln Maxe+N m4 a III swl MUM: ` PROVIDE LIFT H AIDLE 1F'S/S BOLT.TTP T.Menu MR�MAca00 suMMm3Oa. a roc MA. meramiAllal Ms>Vn MO SOMIER 1-DIA.ROD I "m a AIL WAGE RAT TIPS Lail COMM ro Milli a4n MO ME Ma O YMIAE 1Ear snowMEMS C. as-I T4411 Matra atl RIM ar1Er six PSI MOM] b a/Y,¢OS a snow a SK St21EII.soils ' maws TO MEET N-10 lI1MRC lAtO•N Ma a 1MIMLY aEM�m001 L ANOMSIC)SECONDARY ORIFICES GO 7 —OVERFLOW RESTRICTOR PLATE AT IE-SEE BELOW i Lt lv WATER QUALITY WATER QUALITY 1v.,,,,t,N;, ENDS OF DOWN-TURNED r ORIFICE ELBOWS. SEE PLANS FOR „ IE-SEE BELOW AKt.1TAt. ORIFICE SIZES- MANHOLE (SNOUT) A Cr ScEvicles MANHOLE (SNOUT) B C3eanN�6eE SezviaEs ' DRANING NO.250 REVISED 10-31-1s .-—10-31-M ':STC-LraYJfiS - l- 12"DIA. (DG"A-) DRAWING NO.260 --_--J FABRICATED SOUD WALL so Tom AYE wt1E 100 HOPE TEE PER 00+1tAe0.0+E40e 1171E4 SD PIPE FROM— ASTM D-1246 SDR 26 TEL. so 7.Taa.,7++ DETENTION FACILITY PIPE SIZE - 1 raw. s 0 7 0 r+..s T a �. 3' + SEE PLAN _.-_.},Try ` s�M.a t e A l w 4.A a rt (} FLOWarill FLOW ♦' SIDEWALK ADJACENT TO CURB ( IE 1N.SEE PLAN ( E OUT-SEE PTAs _.1 _.0 1 Air FFMN2 FRESNO SERIES 8SC70 � �" `; ,y 3 ��pp��,, '� SHEAR GATE �;1,i� #' £'lXAS» r1, M: ttX"dt OR APPROVED EQUAL, •r }.... TO BE WATERTIGHT i ile. >f!a$'"�carnrmm IN PLACE. F. , .� COUPLING tti`y�lt`*�,!r� * v �"t �..�..1y`3' TrrE hr�*' yF. RESTRICTOR PLATE e+ 1!i l,�A • M piti ,' *` rt'. «_ WITH PRIMARY ORIFICE, \� JJ� NON SHRINK #� Wart(, is j�J,,�4.,:r/j g - f' fY SEE PLAN FOR SIZE 'Y A ` GROUT(TW.) 44.; ;F'-tAk�YAP`,e--, izeni T'1FWN` ,-,, P. i B"SMai MIN.-1 r ENGINEERED FlLL k•�.I z * �< ,licit - DR .4 I \ y il X r\ cr ir_ +V CV 1 .. 4 ,T y' 1 ` ,• y „4„, 'Ay 4"1 4V y yy* 6-MIN. BEDDING ,.... •`yrn} Yt K+s� . j,.,fir r, G44C ( [r ji O � Ct- E W �' w ,4, r ,„-N4s,Y „A ,, A � SECTION A yd4C1t PJ $ } 0 Ma M f its."-EF. 2YR ORIFCE=1.1"DIA HOME.O 134.30114 --- La OD 0 n 10YR/10YR/EMERGENCY OVERFLOW ORIFICE= 12" DIA HORIZ.0 138.05 STRIP AT-CURE its 1I.'. .,- O _E'DCTIYSSfs;a .‘? 0 FLOW CONTROL MANHOLE ..p ` .FaA AFE,`t U F Loi CC SCALE: NTS ' fit 1 E ;, 4IYD2AT4 O TO DE ASJI]AC 3SI,FIID`L , R^4+t34CR Ats.W GUAL}s'MCt s,T/ 0 (I) p two 3€YTT—'Rea 3 X p TAGON OPERATICM4 ISMPt#SETS NITW E L _ is)$. PPPON C AGx oe TUAl1A1 NUT` 0 is$ K C. QRONZE SEA-R=1K€, Y EL WEATHER SNR$,L CCU Ca E. SAFETY SIEGW t t ,. Y. INVADED WOETL€E TKOS q . RATIQNS[STA?. TTWAADS`i g 2; SAFETY CANS TO B 31 OTTES. a 3, WIVPANTS TO BE5WiricA.139WFJOY QN AN rLTLINArz.. tOWE 4. WYWA'W)BC E s: No soswrocnoto ' � 3 TO !MOVE° �E '9. YAM BOX TD BE IN r riNON•t War Atiidio 6 aR AS f :o SL+ii 6. THRUST9. D4:4TALL A S'm45W NOT'BE.. �M f1i1f0RAWT t�pl;JVWIBE( ILO=SNAIL, ;. 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N tact PM yrxf A.a4f4tw (tYT anti r • am icit..r /1 ' '1t ammo, r \ a.TLTr `aATw44 k\ oar rirr r 40.4* a3nN4A. Mauna, ' L.otnn Ono q4 j; R Were. 0011,100 1 Met. a MOW nJ.aa fats4a l>a Ap"` Flamer F '4 ' Fxw newar 01.1.24 F. ►tCtett CA-CSONrFOIT • 0-or-- ACCat PL. I7+' '. ...mat.ROOT �i1M+,,n�rs'Nr'-%t +fi_ t3[ ute+tw oor ? i MAIM �� y 4aaa%dib y: ;rr'.aai Mum*.i /" ••`a.-r.Jry 4rYf1.FKw Maa++llkiRi.T3 } ..✓ B+- ' Auaa>AJIa MDR L. 'bweaim' KT*S0e,0ia. en , mot SECTION A-A *ECTIONB•6 t SECTION A-A B-B • C/�1� i iINTECH' ,CARTRIDGE CATCHBASN ,„�.�a �4'�(,7/' • III !Metalline SO/Ueda La STORMFILTER �d4ia aaa"._, � Etoes ate STORMFE CILTER BASIN .�: 4aaCwTta> N�aSwirroe STANDARD DETAIL mr...t.,. • , ... x 4t.rz�xaTs ...1.'44,4 110.4 STANDARD DETAIL r STORMFILTER STEEL CATCHBASIN DESIGN NOTES a/###a rxro one fort:sal 4441.4,411./ trn;N*CatV t 144T4FT4a40`444. 1wat4fla4f.7.0.1.4.alarm Orr....A.mmera 4nooer. 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Q F rAIt13merrta-4 •Mai ri4a40 Nar(ICaOMmflen onto ut Ma xal N. . 4.y oYLtR'TMJ.'J¢o%IN "CMDe�iND'IwaLmG L J a a PPNOM4A0 *5*4 4 WMX0014*4 k'F 4F1t0iWKKSaNO 10 aTK NYK Lone Krone Ile caner rna on neterteine ere /a/ C+T^4at*,,,a- nl'#mama Earn M Fr W O* Ot 4r a.T elaart kr44AAa4 Y� LX it s:ttasvw'rtf-rsana1 tent e WtOUR. Mar[rlw '4M 4ANM7t'Ra Aa+amK.Tw445W.TRR 41..Ia4Juaatrt R4tan41DY6#MONYR9t 4MMR"r0.1%gnpaNNc',W pfV#CNI:pE ytpp . W aa44 a.fatrw T.C4,It4NdTe 4rtLYJT 06.401.0 aar a V.NCX Vat.,It G*It4*ttaR*Aarmlat 4t tent IC alOt4 lea:tw MOOW4000.1f !at-AtAla%tfR Aa..isiw Nl4:a WFda[a1,k0a000A4.1t OVUMIVYia aaartepCayM4 MOO O*014ia mom "Ok n PLAN VIEW F.Fat44At40000„w.ta++0wa*is,rwwrnama.A . wo 1 .rux ROMAN Vatr aN.N. a may.*1Da.44.1.4aw4V 0 �r. 441.4,4 4COa44T 14e Tot.* a t60.6e 0 Cr) ft4 C.-.Ir w4rrw.a Amos ar WM e .a a.9a urn rrareta.T00**Tr ae.to0nutteowT-may.4Ac,wt-a.45Nusae 3 w N. AR•aNA+rrwaapts 4.4fw5MCaa•t4 WV.4.41..Tract4.144w.1 MO let OM nc 4a0..<04r+a.1+0C 3*42VOLOr intele+n srr O �r' f C77 x .ternr1Canterr Mr tt*Or r OpW10**00ti m 4M wbpp Gilt Ornerier trert awn et U Jr Q LX LLI 1D O eaa*AC00*10tNANat#nva.CtaACaa01001010100a040111 t,atioa'aa.ra.'aatotaw+ Q i L. r.-FFOM tF Pt.-oatt-CARTRIDGECATCF ASIN to / .r w .r, .., lelleEVE Wi STQRTArILIu(RATA p• cc1 _ ��- root a_T max t\� / QYRJFai qInfIrCebew Y U 0-} n*4455 nauc aw-:. 1 rest t4I*tSik.14N 9* • Q D 0 Ci_ lfeng [' #Wn ` f `"f>Li'xA'tiNn a rr,Nwa _ill ra.ara nett µ py,4 Rif Q 4+Twmlwr reran. *wars w a4.....;-� }TY.ixTA ( rt! G44rT61 en It,bl { -_0 Nt III TAW 914k.�7 6" KV MN ` r i!4 itr alit 1 4k R7 fi' PDeRte.!a f4.fl6aA A tfah Nlf hN�J a4`k4T . wint rall 'fflrvatl a W IIUr1ai rt'*� r#4r 4 i 011i PIY Nat P. 0400007 I 04$0.R t . 4444401W le #y' _ Ct'cN4P#N1tR'�,r g r ( '.s aWOW ..P 7a29 RA.Rr+M'f 5( 0+a. - •�'. .. i%t. ON Ma te.1 SECTION A-A SECTION B-8 NTECif 1 CARTRIDGE CATCHRASIN _,..�� g ttrano "` STDRMFILTER DETAILS a tz>arT=e.. an 4 '+�„`.. y'r"u'r' STANDARD DETAIL C4.4 JOB NO.190142.01 4. KIDDIE ACADEMY - TIGARD Appendix D Conveyance Calculations r 8 Project Name: Kiddie Academy Tigard Design Frequency: 25yr Designed By: NWS Date: 12.04.2020 Project#: A20043.10 Checked By: CNH Time of Total Total Time Average Min. Capacity Velocity Upstream downstream Runoff Equiv. Concept. Design Pipe Flow Area Area Drainage of Rainfall IE(in) IE(out) Invert Pipe Size Flowing Flowing Structure Structure Coeff, Area Time Area Or Flow Content. Intensity Discharge Length Slope Full Full Time (A) (A) (c) (cA) (cA) (t) (T) (I) (Q) (L) (s) (D) (Q) (V) (t) sqft acres acres acres min min in/hr cfs ft ft ft % in cfs fps min SFCB-01 212 1655.28 0.038 0.90 0.034 0.034 5.0 5.0 3.40 ',0:116 138.21 136.89 202.63 ,.,0.7%: ' 6 0.45 2.31 1.5 CB-01 SFCB-02 1437.48 0.033 0.90 0.030 0.030 5.0 5.0 3.40 `',0.10t 142.13 141.71 44.00 1.0% 6 0.55 2.80 0.3 SFCB-02 212 5270.76 0.121 0.90 0.109 0.109 5.0 5.0 3.40 ..370 * 141.71 136.89 21.66 22:3% 6 2.65 13.51 0.0 212 DETENTION 6926.04 0.159 0.90 0.143 0.143 5.0 5.0 3.40 0.487 136.89 136.44 70.12 0.7% 8 0.98 280 0.4 RD-01 195 1810.17 0.042 0.90 0.037 0.037 5.0 5,0 3.40 0.127 ' 143.20 140.95 82.73 2,7% 6 0.93 4,72 0.3 .1 RD-02 195 1810.17 0.042 xi 0.90 0.037 0.037 5.0 5,0 3.40 '. t_127 143.20 140.95 2.00 !. 12 5% 6 5 tii5 ; 30 37 I 0.0 195 198 3620.34 0.083 : 0.90 0.075 0.075 5.0 5.0 3.40 0 254 140.95 138.93 74.55 2.7% 6 0 9 4 71 0.3 RD-03 198 1810.17 0.042s 0.90 0.037 0.037 5.0 5.0 3.40 0 127 143.20 138.93 2.00 1213.5)/b 6 8.22 41 84 , 0.0 198 WQMH-01 5430.51 0.125 0.90 0,112' 0.112 5.0 5.0 3.40 0.381 138.93 137.11 66.93 4 2.7-4) 6 0.93 4.72 0,2 RD-04 206 1810.17 0.042 0.90 0.037 0.037 5.0 5.0 3.40 r 0.127 143.20 139.21 130.72I3.1% 6 0.98 5.00 0.4 RD-05 206 1810.17 0.042 0.90 0.037 0.037 5.0 5.0 3.40 .'0.127` 143.20 139.21 2.00 499.5% 6 7,94 40.44 0.0 206 207 3620.34 0.083 0.70 0,058 0.058 5,0 5.0 3.40 0.198 139.21 138.45 24.65 31% 6 0.99 5.03 0,1 RD-06 207 1810.17 0.042 0.90 0.037 0.037 5.0 5.0 3.40 ; 127 143.20 138.45 2.00 237.5% 6 8.66 44.13 0.0 207 WQMH-01 5430.51 0.125 0.90 0.112 0.112 5.0 5.0 3.40 0,381 138.45 137.11 13.47 g s9 6 1.77 9.03 0.0 WQMH-01 DETENTION 10861.02 0.249 0.90 0.224 0.224 5,0 5.0 3.40 0.763 137.40 136.43 18.04 5.4% 6 1.30 6.64 0.0 CB-02 214 4617.36 0,106` 0.90 0.095 0.095 5.0 5.0 3.40 ; 142.88 142.18 70.83 1 0% 6 . 0.56 2.85 0,4 CB-03 214 3397.68 0.078 0.70 0.055i 0.055 5.0 5.0 3.40 o, ,- 142.34 142.18 16.79 10% 6 0.55 2.80 0.1 214 SFCB-03 8015.04 0.184 0.90 0.166 0.166 5.0 5.0 3.40 i * ' 142.18 141.67 52.01 1.0% 8 1.20 3.44 0.3 SFCB-03 DETENTION 10323.72 0.237 0.90 0.213 0.213 5.0 5.0 3.40 Y7 141.67 136.86 25.53 18 8% 8 5.26 15.06 0.0 DETNETION FCMH-01 28110.78 0.645 0.90 0.581 0.581 5.0 _ 5.0 3,40 p T`: 134.43 134.30 18.11 0,7% 12 3.03 3.85 0.1 FCMH-01 MAIN 28110.78 0.645 0.90 0.581 0.581 5.0 5.0 3.40 4).kteit 134.30 133.92 76.48 5 0 5% 12 2 52 3.20 0.4 Page 1 . 1111111111111111111111 SEESI-EET NOTES a 1. ALL SANITARY PIPING SHALL BE PVC 3034 OR APPROVED , Q • EQUAL UNLESS NOTED OTHERIYISE. [i4 ff ,r..°`y 2• . THIS PUN IS GENERALLY DIAGRAMMATIC IT DOES NOT ° 4. SHOW EVERY JOINT,BEND, FITTING,OR ACCESSORY f'J6'4 y L / REQUIRED FOR CONSTRUCTION. y7 �4@+ '+. 1" �.! ..• 3 UPC CH. CLEAN AP R SEVEN,BETS SHALL INSTALLED 07 AND SECTION 719 CE m t E s C. {s fy, i I t\ 1. '- +� Y• THIS PLAN MAY NOT SHOW ALL REQUIRED CLEAN OUTS. J < \ • 4. DOMESTIC WATER AND FlRE UNES AND ACCESSORIES BETWEEN THE WATER METER AND THE BUILDING SHALL BE ''COX UCENSEDD BY A PLUMBING�CONTRACTOR NSED PLUMBER EMPLOYED BY A ft ,1 ,~''° t \ 5 CONSTRUCTEDUTTUTIES WORN OF FIVE MATERIALSS APPROVED FOR INTERIOR if LF-6`St! 13?.3i4 ( ,4 USE AS DESCRIBED IN THE CURRENT EDITION OF THE UPC. $ , 41 ,,,, /-1a.5 S46365.16��s:'\ 5 IF 6.''V 6. INLETS AND OUTLETS TO ON-SITE MANHOLES SHALL HAVE $ dj 7!' , f44,„ 0'95% . FLEXIBLE CONNECTION NO CLOSER THAN 12'AND NO .�' 1.33,=824 FARTHER THAN 36'FROM THE MANHOLE. ,a ,� r_ i4 '.,� 7. CONTRACTOR TO VERIFY SANITARY AND WATER SIZING r / RIM..T43. :, a .,5.Q-6 ' AND INVERTS ION APPROVED PLUMBING PLANS PRIOR TO `8"OUT..142.13(SE `4¢ y�.,* L SAID INLI11ESG RIALS OR BEGINNING CONSTRUCTION OF " f. 93 LF-850 w \4.51% T , ,,,,,\ eS0 ,S. 5.065% r N , S- SD FC MH-0 1 LABEL LEGEND i / , tip°sI>` ..F \ J 12"S0 .. R€M1-1'3I5N.J=31.J0 SE PPE LABELS s F S+ t 12'OUT-734.30(NW) ig‘54/ 3t - 'TUTILITY LENGTH •-64 \� . . 51if=...,,,,/,- '9%044 6• *4 - 0h 6S t UTUtt SIZE % // ° It 6OUT-141.68 OW)r I ` \ $ 16.06.33 LF $'STJ 19 Lf - 12`SD \ `.. - /' s 7134.950 XXLF-XX'XX-UTILITY TYPE // 5=0.65A �� 5=R50A N. ' AAI+M.�Ir+le `I � /°8 '6 10 gE'S� 5X.XX% SLOPE(WHERE MPUCABIE) liti /; tE-137.97 F>'I£.E134.• / f,, 5.�2.03% t. t F / � ". •. sF yB Li 8"5b '+, ,/ IE.135,2655 O CROSSING STRUCTURE LABELS A=»N$INEERIN6 T `' • S.0.95% 17 is.- 12'S0. j \�1E.F36.5fi SD O CROSSING i!T#,(TY TYPE{FP=Fd2E PK0TEC11ON.S-SANITARY. `• • . \45T0RM DRAINAGE.W=WATER) •••• ••••• SD SFQB-01 •. / x 5-0.78% ", -4 LF-B`SO C81fwM0. �* SD 5FC8-O2 SD O CROSSING E-134,4 "_'� )'4136r53 5+0.65 IE 8'OUT-138.21(SE)j/ 't IRU-1#4.0F SS 0 CROSSING .138.54 •-. 6 6'c �N' F-�SIRDCTLNtE TYPE(SEE BEi.O'ri� f ! 1E 6 IN-141.71 {NW) 48'OETERETON'tE.w 134.43 Ml4•. S-Q65% \., 1 . ! ! IL 6'0UT-141.71 {5E} XX XX-XX---S NUMBER(WHERE APPLICABLE) j ! 6"MANIFOLD 1E4134,43 / :•-136,49'-"",A s SY �� RIM=XX.XX---STRUCTURE INFO(WHERE APPLICABLE) , 1 0 ! Li tf- 8/SD ti <lF-E'S6. ! 48' DETENTION -134.f3 a..... / l 5+O"65X/ /'` , ' qq f7 INLET PIPE tE-136.f3 $, / /!// '. STRUCTURE TYPES 1 / // ` � � / / ,/� 1E+134,44 48'DETENTION •;.� F t// ! j/ / 18 LF- 8"50 A +y / J ++' •1 ##INLET PIPE 1 TYPE DESCRIPTION ` fig...!�'- / / \\ '•` BF BACKFLOW PER DETAIL 4/C4.2 /!* j/jj ,!! , ,, �,' 11 IF S-6"501 �\ `1•. '!r //j' x '�iE .'Ji 48"DETENTION • ��3, C8 CATCH BASIN PER DETAIL S/C4.2 CI / / ! t 6J LF-8'SD 5.2AO7L / / !. 134.541NLET PIPE \ N. FCMH FLOW CONTROL MANHOLE PER DETAIL 1/C4.S ,.f ! / ! I 5-2.72% /'_+'- \ ,.� /f /1V'f 'E'.a.Y11:8418'DETENTION �, FOC FIRE DEPARTMENT CONNECTION PER DETAIL 3IC4.2 `7/, /! //j! fA SD WOMH-Oi /�/\/ ..=134.54 WI.ET PIPE / / ! �`� RIM=144.69 A / "!/ ,V,`• FH FIRE HYDRANT PER DETAIL 542fC4.3 IIIII `Y / 7 / t IE 6"IN=137.11 ( /'l I� ✓ / ♦ '* •`+ v, FV FIRE VAULT PER DETAIL 2/C4-2 /X / / j 'P IE 6'IN-137.40(5) � .-139.37 _ '`' r / / `' \ I8F IRRIGATION BACKFLOW ! / '`�j!! d} / ! 34 LFS- OSD ' ! I� ,,,,:".„6// titi, •t. ! fE 8'OUT-137.40(NE) /' / ` A ., RD ROOF DRAIN CONNECTION .e4N S.HM.K RMR iee I14 rr 1 .{ f SO RO SD RD "'55 Lf 6 • 1�/ / t'Y. SFCB SINGLE FILTER CATCH BASIN PER DETAILS ON C4.4 rasxca►e"ostaor 4T33K /' ff J" 6..14120 ' ..4: 00A.2Ao.ioxo ! s< \ / 1 [-14320 <, 5••0.49% / ✓ ♦ WM WATER METER �T"f7 d --.,< /f,, r SD CB-02 �. !/j / / ', \ •:� WQMH WATER QUALITY MANHOLE PER CWS STANDARD �,. , /! RIM-144. Y Y ! ''!/5D GO-O3 " DETAIL 250 AND 260 ON SHEET C4.3 .s.4 v s•14 4.4 4 4 �. �. Y IE 6'OUT-142.88(S) ,"",// ,y .144,28 ..`.so. /1 5 p / /.1 6'0.0.142.34(SW). �♦ .0./ ;1 25 IF- 6'S0 i2ri � vVz \�v .•.,t S43.051C SD RD /�/5 9556SA • •, ,„ LEGEND • 75 U'- B'S'O IE.4141 20 �/ ,e.� �.\ �, 104134/0 or DETENTION ! Y 5-2.72% SD RD 8'52 LF- S0 tEr13f.9O�6'YlW6F0LA SANITARY SEWER UNE Ss is •• ., E..143,20 5-0,99% / \ \` \ \. WATERLINE W W ..W ` i 35 LF_6"50 .I.IJ6:6 tr` /�'�/ /ti N. A� FIRE UNE FP-FP-FP-FP- 0 * S-O.81Ct 26 LF- 8r50 '! f / cC 5'09.73% s� / FDC UNE s , !f�f///// •a .. / -FDC -FDC -FDC Q fFs145.70 ! // #LF-6 4 / STORM LINE �.rarao.yuus. r. C' �� _ a. IF-12"W r Q CC p 83 LFS� 131 LF-$'SO � W L9P-Ot ✓ X t3 L� ti S•3.OSR SD SFCB-OJ 1 / IF__ p 4 r. '\ " STORM NOTES F� CV SO RD RIM=144.97 �4' jjj W F_OI "W� 4 t °ja`� 1 INSTALL 60D LE OF 48'DETENTION PIPING.DETENTION L. I LL,.J N iE-143.2O IE 8'IN-141.67{NW) . `=�`' PIPING TO TIE INSTALLED PATH APPROXIMATELY 0.3%OF �. f� IE 8"OUT-141.67(SE) � �n / a}, SLOPE O �CC" CA 1 , 26 lF- 12`W' I1l� Nit 3 2 CONNECT TO EXISTING STORM LINE U G 0 K _1S4D RD 0 SANITARY NOTES Z Di 0 w s .( r „ # 3,20 19 is - �i• - " 7 LF 12'b1.�` o Q CC e W• �: l// , r 1 CONNECT TO EXISTING SEWER UNE V a_ Q 'R' 9 IF- 4"W" , - 2 SANITARY SEWER POINT OF CONNECTION TO BUILDING. W Q D 0 g .{ • .,'. * 3#LF- 6'W 17 IS 6 f / CONTRACTOR TO VERIFY INVERT BEFORE INSTAU.ATION, Z W F- 2 .. * * *. . ., .i. - ;E.T-12'W ! • f i X WATER NOTES r , fLn A f"` I, ,, �fj 1 1 CONNECT TO EXISTING WATER MAIN Y •d- A ,r` m 2 FIRE PROTECTION POINT OF CONNECTION TO BUILDING LO ' r , �.i ` ,r'/i 3 DOMESTIC WATER SERVICE CONNECTION TO BUILDING '- 8 *+` . \ l r f/7 4 RELOCATE EXISTING PUBLIC FIRE HYDRANT # .1". .!' f /f NORTH F , CO M • - UTILITY PLAN ' i t� >e . anamc WALE /IF siiesi! lkili ' , \ �� (IN TAT 1 C3.0 JOB G.19014201 KIDDIE ACADEMY - TIGARD Appendix E HydroCAD Calculations qa1( 9 Pre-developed Conditions < 2S > > P Post-developed 4811 CMP Conditions Subcat Reach on Link Routing Diagram for Kiddie Academy Tigard vi4,4$ Prepared by AAI Enginering Inc., Printed 11/17/2020 HydroCAD®10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Kiddie Academy Tigard Prepared by AA! Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 1.235 75 Ex Conditions (1S) 0.355 98 Existing roof (2S) 0.989 98 Roof, Paved parking, Concrete HSG B (2S) 2.580 87 TOTAL AREA Kiddie Academy Tigard Type IA 24-hr 2yr Rainfall=2.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 3 Time span=0.00-25.00 hrs, dt=0.05 hrs, 501 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-developed Runoff Area=53,810 sf 0.00% Impervious Runoff Depth=0.65" Tc=5.0 min CN=75 Runoff=0.13 cfs 0.067 of Subcatchment 2S: Post-developed Runoff Area=58,557 sf 100.00% Impervious Runoff Depth=2.27" Tc=5.0 min CN=98 Runoff=0.79 cfs 0.254 af Pond 1 P: 48"CMP Peak Elev=138.05' Storage=7,100 cf Inflow=0.79 cfs 0.254 af Outflow=0.06 cfs 0.096 af Total Runoff Area= 2.580 ac Runoff Volume=0.321 af Average Runoff Depth = 1.49" 47.89% Pervious= 1.235 ac 52.11% Impervious= 1.344 ac Kiddie Academy Tigard Type IA 24-hr 2yr Rainfall=2.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 1 S: Pre-developed Conditions Runoff = 0.13 cfs @ 8.00 hrs, Volume= 0.067 af, Depth= 0.65" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 2yr Rainfall=2.50" Area (sf) CN Description * 53,810 75 Ex Conditions 53,810 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 1S: Pre-developed Conditions Hydrograph 0.14- !9 Runoff 'aa«s 0.13," :.._a.. Type IA 24-hr 0.12 2yr Raifal1=2.50"- Runoff Area=53,810 sf 0,-. 0.09- Runoff Volume=0.067 af 3 ._.m ._-.a_.. - Runoff Depth=0.65" 0.07- . Tc LL O.O6w .� 0.05 ,Fj� ,�. ., *d�, �N-75 0.04-'. 0.03:' 0.02 .: iff 0.01 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) Kiddie Academy Tigard Type IA 24-hr 2yr Rainfall=2.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 2S: Post-developed Conditions Runoff = 0.79 cfs @ 7.86 hrs, Volume= 0.254 af, Depth= 2.27" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 2yr Rainfall=2.50" Area (sf) CN Description 43,075 98 Roof, Paved parking, Concrete HSG B 15,482 98 Existing roof 58,557 98 Weighted Average 58,557 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 2S: Post-developed Conditions Hydrograph 0.85: ®Runoff 10.Ta ds 08: 7 Type IA 24-hr 0.7 .. _.o. _2yr Rainfall-2.50,E a6- Runoff Area=58,557 sf 0.55- Runoff Volume=0.254-af 0.45= Runoff Depth-2" 2 0.4 1 T =5 0 min p0. 3 0.25 0 22i. 2/010 0.1? /06 0.05 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) Kiddie Academy Tigard Type IA 24-hr 2yr Rainfall=2.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 6 Summary for Pond 1 P: 48" CMP Inflow Area = 1.344 ac,100.00% Impervious, Inflow Depth = 2.27" for 2yr event Inflow = 0.79 cfs @ 7.86 hrs, Volume= 0.254 af Outflow = 0.06 cfs @ 23.98 hrs, Volume= 0.096 af, Atten= 92%, Lag= 967.0 min Primary = 0.06 cfs @ 23.98 hrs, Volume= 0.096 af Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Peak Elev= 138.05' @ 24.00 hrs Surf.Area= 1,487 sf Storage= 7,100 cf Plug-Flow detention time= 526.2 min calculated for 0.096 af(38% of inflow) Center-of-Mass det_ time= 225.9 min ( 897.8- 671.9) Volume Invert Avail.Storage Storage Description #1 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #2 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003'I' #3 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #4 134.54' 1,508 cf 48.0" Round Pipe Storage L= 120.0' S= 0.0003 '/' 7,540 cf Total Available Storage Device Routing Invert Outlet Devices #1 Primary 134.30' 1.1" Horiz. 2yr C= 0.600 Limited to weir flow at low heads #2 Primary 138.05' 12.0" Horiz. 5yr, 10yr, Emergency Overflow C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.06 cfs @ 23.98 hrs HW=138.05' (Free Discharge) -1=2yr (Orifice Controls 0.06 cfs @ 9.33 fps) 2=5yr, 10yr, Emergency Overflow (Weir Controls 0.00 cfs @ 0.11 fps) Jl4tt3'.. b Yiataderliith.114011 . tii, dili344.44lt# o nd io.. .. l biIaitata£ ttt.: 0it,. fevt3ft!#h.tfa4a Kiddie Academy Tigard Type IA 24-hr 2yr Rainfall=2.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 7 Pond 1 P: 48" CMP Hydrograph d ®Inflow os5; [079cls 1 III Primary 0.e: Inflow Area=1 .344 ac 0.75 .__.: ,.. �...._r ,__._ _ Peak lev=138.05' 07 , 0,65 .. _ .. Storage=7,100 cf 06 0.55= .� .. _ . • u 0.5- 0.45;. 3 0.4: 0.35i 0.25' 0.2-:0.15 �f., 0.1 ir 0.05 //%i //�'ff.71//17 / '„ Rid°'//'+ `/./'/ 'l./}%.in++'.r,... yf 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) .r3fNY}iHJUFN}i>'ExffilJliNtilliF3ViMNYiiliAH4/N}FiN+FIIfR '.3rtia}ti f i tf'rx ibiN{I "+ia}krVl.. r re .rfe.. .uMrfri}Jx ilHd}ti}Fii>fJe&Jf Y/tatiJlbfia"re luu..r r :+_s:+rr r lNfNx+Ns iN}}t.tw n xtl x>rt. )M,xiN imiA t } <t1iNYN! rslus.ax, +r v. Kiddie Academy Tigard Type IA 24-hr 5yr Rainfall=3.10" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD4 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 8 Time span=0.00-25.00 hrs, dt=0.05 hrs, 501 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-developed Runoff Area=53,810 sf 0.00% Impervious Runoff Depth=1.03" Tc=5.0 min CN=75 Runoff=0.25 cfs 0.106 of Subcatchment 2S: Post-developed Runoff Area=58,557 sf 100.00% Impervious Runoff Depth=2.87" Tc=5.0 min CN=98 Runoff=0.99 cfs 0.321 of Pond 1P: 48" CMP Peak Elev=138.09' Storage=7,161 cf Inflow=0.99 cfs 0.321 af Outflow=0.16 cfs 0.163 af Total Runoff Area= 2.580 ac Runoff Volume=0.427 af Average Runoff Depth= 1.99" 47.89% Pervious= 1.235 ac 52.11% Impervious= 1.344 ac !raft sifN' Kiddie Academy Tigard Type IA 24-hr 5yr Rainfall=3.10" Prepared by AA! Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 1S: Pre-developed Conditions Runoff = 0.25 cfs @ 7.99 hrs, Volume= 0.106 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 5yr Rainfall=3.10" Area (sf) CN Description 53,810 75 Ex Conditions 53,810 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 1S: Pre-developed Conditions Hydrograph ....: . _ ....; . ._._.._, ®Runoff 0.26- 10,25 _ ..#024, Type IA 24-hr 0 5yr Rainfall-3.10" Runoff Area=53,810 sf 0.187 Runoff Volume-- 0:106 af H 0.16 s�i�. . J Runoff Depth 1 A 0.14 0 0,21 c- min o.,, w .- _-N75 0.04-' 0.021 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) Kiddie Academy Tigard Type IA 24-hr 5yr Rainfall=3.10" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 2S: Post-developed Conditions Runoff = 0.99 cfs @ 7.86 hrs, Volume= 0.321 af, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 5yr Rainfall=3.10" Area (sf) CN Description 43,075 98 Roof, Paved parking, Concrete HSG B 15,482 98 Existing roof 58,557 98 Weighted Average 58,557 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 2S: Post-developed Conditions Hydrograph Runoff ow* Type IA 24-hr 5yr Rainfall=3.10"" Runoff Area-58,557 sf Runoff Volume=0. 21 af Runoff Depth=2.87" Tc=5.0 min CN=98 0 � . . .,, ..� ,2,-. ,�,,�,.,, ,,;...,e� .,. +,. .�.�. ,. � _ r/! or 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) *1100 Kiddie Academy Tigard Type IA 24-hr 5yr Rainfall=3.10" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD+? 10.00-26 sin 01638 0 2020 HydroCAD Software Solutions LLC Page 11 Summary for Pond 1 P: 48" CMP Inflow Area = 1.344 ac,100.00% Impervious, Inflow Depth = 2.87" for 5yr event Inflow = 0.99 cfs @ 7.86 hrs, Volume= 0.321 af Outflow = 0.16 cfs @ 12.55 hrs, Volume= 0.163 af, Atten= 84%, Lag= 281.4 min Primary = 0.16 cfs @ 12.55 hrs, Volume= 0.163 af Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Peak Elev= 138.09' @ 12.55 hrs Surf.Area= 1,421 sf Storage= 7,161 cf Plug-Flow detention time= 516.5 min calculated for 0.163 af(51% of inflow) Center-of-Mass det. time= 253.1 min ( 918.5 -665.4 ) Volume Invert Avail.Storage Storage Description #1 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #2 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #3 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #4 134.54' 1,508 cf 48.0" Round Pipe Storage L= 120.0' S= 0.0003'/' 7,540 cf Total Available Storage Device Routing Invert Outlet Devices #1 Primary 134.30' 1.1" Horiz. 2yr C= 0.600 Limited to weir flow at low heads #2 Primary 138.05' 12.0" Horiz. 5yr, 10yr, Emergency Overflow C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.15 cfs @ 12.55 hrs HW=138.09' (Free Discharge) -1=2yr (Orifice Controls 0.06 cfs @ 9.38 fps) -2=5yr, 10yr, Emergency Overflow (Weir Controls 0.09 cfs @ 0.68 fps) Kiddie Academy Tigard Type IA 24-hr 5yr Rainfall=3.10" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 0 2020 HydroCAD Software Solutions LLC Page 12 Pond 1 P: 48" CMP Hydrograph • Ei Inflow I099d Ps nmary 1 Inflow Area=1.344 ac Peak Elev=138.09' Storage=-7, 61 cf U. .. 0 1 2 3 4 5 6 7 8 { 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) Kiddie Academy Tigard Type IA 24-hr 10yr Rainfall=3.45" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 13 Time span=0.00-25.00 hrs, dt=0.05 hrs, 501 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre-developed Runoff Area=53,810 sf 0.00% Impervious Runoff Depth=1.27" Tc=5.0 min CN=75 Runoff=0.33 cfs 0.130 of Subcatchment 2S: Post-developed Runoff Area=58,557 sf 100.00% Impervious Runoff Depth=3.22" Tc=5.0 min CN=98 Runoff=1.10 cfs 0.360 of Pond 1P: 48"CMP Peak Elev=138.11' Storage=7,191 cf Inflow=1.10 cfs 0.360 of Outflow=0.24 cfs 0.202 af Total Runoff Area= 2.580 ac Runoff Volume= 0.491 af Average Runoff Depth= 2.28" 47.89% Pervious= 1.235 ac 52.11% Impervious= 1.344 ac ierF.tuF. tleuf4M/!dt <itlkiFtUtueviixNNtli#tiNHlfllM:sGiOFtW itilainsits4dilaul3awad(M3et3iWN 3+af;.urisWNtfFµ"='•, uru.e.=p..yyt r. r i .,e.. .utw.srtaii afelfr.vsfrtMsfsuititsbuutHAAWSH3JrtiulHH4Uaktltr!/1H[Nrlf}iiNWi!{iANtuduruwrt3w3Mbbllr.... Kiddie Academy Tigard Type IA 24-hr 10yr Rainfall=3.45" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD 10,00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment 1 S: Pre-developed Conditions Runoff = 0.33 cfs @ 7.98 hrs, Volume= 0.130 af, Depth= 1.27" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 10yr Rainfall=3.45" Area (sf) CN Description 53,810 75 Ex Conditions 53,810 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 1S: Pre-developed Conditions Hydrograph • 0 367, , . �.p_.. ®Runoff 0.34 l 0 c l _ ; 0:32. Type IA 24-hr 0.3 � „ . ;_. 10yr Rainfall=3.45" 0.28 fl.26 _ ;._,_:... .. ; ..,._ Runoff Area=53,810 sf 0,24 Runoff Volume=0.130 of fl.2 Runoff Depth=1 .27" ;.....i. Tc-5.0 min 0.14. z 0.12- 0.06 0.04 0.02 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) .. ,. m Kiddie Academy Tigard Type IA 24-hr 10yr Rainfall=3.45" Prepared by AA! Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 15 Summary for Subcatchment 2S: Post-developed Conditions Runoff = 1.10 cfs @ 7.86 hrs, Volume= 0.360 af, Depth= 3.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 10yr Rainfall=3.45" Area (sf) CN Description 43,075 98 Roof, Paved parking, Concrete HSG B 15,482 98 Existing roof 58,557 98 Weighted Average 58,557 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 2S: Post-developed Conditions Hydrograph U Runoff 11 Type IA 24-hr... 1- 10yr Rainfall=3.45" i Runoff Area=58,557 sf Runoff Volume=0.360 af Runoff Depth3.22 • Tc=5.0 min 1 CN=98 vo- L,f/ de 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) wig" Kiddie Academy Tigard Type IA 24-hr 10yr Rainfall=3.45" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 sin 01638 ©2020 HydroCAD Software Solutions LLC Page 16 Summary for Pond 1 P: 48" CMP Inflow Area = 1.344 ac,100.00% Impervious, Inflow Depth = 3.22" for 10yr event Inflow = 1.10 cfs @ 7.86 hrs, Volume= 0.360 of Outflow = 0.24 cfs @ 10.07 hrs, Volume= 0.202 af, Atten= 79%, Lag= 133.0 min Primary = 0.24 cfs @ 10.07 hrs, Volume= 0.202 of Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Peak Elev= 138.11' @ 10.07 hrs Surf.Area= 1,385 sf Storage= 7,191 cf Plug-Flow detention time= 472.7 min calculated for 0.202 of(56% of inflow) Center-of-Mass det. time= 226.9 min ( 889.4-662.5) Volume Invert Avail.Storage Storage Description #1 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #2 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #3 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #4 134.54' 1,508 cf 48.0" Round Pipe Storage L= 120.0' S= 0.0003 'I' 7,540 cf Total Available Storage Device Routing Invert Outlet Devices #1 Primary 134.30' 1.1" Horiz. 2yr C= 0.600 Limited to weir flow at low heads #2 Primary 138.05' 12.0" Horiz. 5yr, 10yr, Emergency Overflow C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.23 cfs @ 10.07 hrs HW=138.11' (Free Discharge) T.-1=2yr (Orifice Controls 0.06 cfs @ 9.40 fps) 2=5yr, 10yr, Emergency Overflow (Weir Controls 0.17 cfs @ 0.83 fps) Kiddie Academy Tigard Type IA 24-hr 10yr Rainfall=3.45" Prepared by AAI Enginering Inc. Printed 11/17/2020 vispo HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Pace 17 Pond 1 P: 48" CMP Hydrograph ,//f •Inflow I�.1oas ®Prima Inflow Area=1.344 ac Peak Elev=138.1 1' Storage=7,191 cf a.2+dsr 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) Kiddie Academy Tigard Type IA 24-hr 100yr Rainfall=4.50" Prepared by AAI Enginering inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 18 Time span=0.00-25.00 hrs, dt=0.05 hrs, 501 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Pre-developed Runoff Area=53,810 sf 0.00% Impervious Runoff Depth=2.05" Tc=5.0 min CN=75 Runoff=0.58 cfs 0.211 af Subcatchment 2S: Post-developed Runoff Area=58,557 sf 100.00% Impervious Runoff Depth=4.26" Tc=5.0 min CN=98 Runoff=1.45 cfs 0.478 of Pond 1P: 48" CMP Peak Elev=138.22' Storage=7,332 cf Inflow=1.45 cfs 0.478 af Outflow=0.82 cfs 0.319 af Total Runoff Area= 2.580 ac Runoff Volume= 0.689 af Average Runoff Depth= 3.20" 47.89% Pervious = 1.235 ac 52.11% Impervious= 1.344 ac fftf#N3k6tltl#& .,..._ WYdKx#liC�tt .-.-. .... ..,kY+iNeurwiiatt+iFWaarlJaB.AtH . Kiddie Academy Tigard Type IA 24-hr 100yr Rainfall=4.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 19 Summary for Subcatchment 1S: Pre-developed Conditions Runoff = 0.58 cfs @ 7.97 hrs, Volume= 0.211 af, Depth= 2.05" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 100yr Rainfall=4.50" Area (sf) CN Description * 53,810 75 Ex Conditions 53,810 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, 5 Subcatchment 1 S: Pre-developed Conditions Hydrograph �Runoff 104. 0.6 0.55-� Type IA 24 hr _ r._ . - _- -- _� 100yr Rainfall=4.50". - 0.5" p 0.45 o Runoff Area=53,81 Q sf 0.4;- Runoff Volume=0 1I af 0.35 Runoff 5"Depth=2,0 0.3au. Tc=5.0 min 0.25: i i t CN=75 0.2i 1 0.1 r iii I ' Pi . . 0.05-: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) 1.re€xa!lxnaHKNrvaaH.nt FlbtWiNY.eLN33 NNAHnN„ tdi N af3;a [I'fxN1» rnsntra ::. r , n,uH{aldlJl[NN/ldkfNsUMaitr{often.»..al,... ,,..,. aunseuu a.,ltnNanntl'i.eumuutdNw.su if#lalKJnln,JnJ1U,Ur+rn: u »..,r,,e., Kiddie Academy Tigard Type IA 24-hr 100yr Rainfall=4.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 Uc 2020 HydroCAD Software Solutions LLC Page 20 Summary for Subcatchment 2S: Post-developed Conditions Runoff = 1.45 cfs @ 7.85 hrs, Volume= 0.478 af, Depth= 4.26" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Type IA 24-hr 100yr Rainfall=4.50" Area (sf) CN Description 43,075 98 Roof, Paved parking, Concrete HSG B 15,482 98 Existing roof 58,557 98 Weighted Average 58,557 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 2S: Post-developed Conditions Hydrograph Liniiar.of Type IA 24-hr 100yr Rainfall=4.50 Runoff Area=58,557 sf Runoff Volume=0.478 af Runoff pepth=4.26" Tc=5.0 min CN=98 I r _ _ ..� _..y..�el• a, . . f t...' .,rzr,.r ,..r r b, 0 1 2 3 4 5 6 7 6 9 10 11 12 13 14 15 16 17 16 19 20 21 22 23 24 25 Time (hours) aru,. Kiddie Academy Tigard Type IA 24-hr 100yr Rainfall=4.50" Prepared by AAl Enginering Inc. Printed 11/17/2020 HydroCAD© 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 21 Summary for Pond 1 P: 48" CMP Inflow Area = 1.344 ac,100.00% Impervious, Inflow Depth = 4.26" for 100yr event Inflow = 1.45 cfs @ 7.85 hrs, Volume= 0.478 af Outflow = 0.82 cfs @ 8.18 hrs, Volume= 0.319 af, Atten= 44%, Lag= 19.8 min Primary = 0.82 cfs @ 8.18 hrs, Volume= 0.319 af Routing by Stor-Ind method, Time Span= 0.00-25.00 hrs, dt= 0.05 hrs Peak Elev= 138.22' @ 8.18 hrs Surf.Area= 1,176 sf Storage= 7,332 cf Plug-Flow detention time= 370.0 min calculated for 0.318 of(67% of inflow) Center-of-Mass det. time= 167.6 min ( 823.8 -656.2 ) Volume Invert Avail.Storage Storage Description #1 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 'I' #2 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003'/' #3 134.44' 2,011 cf 48.0" Round Pipe Storage L= 160.0' S= 0.0003 '/' #4 134.54' 1,508 cf 48.0" Round Pipe Storage L= 120.0' S= 0.0003 '/' 7,540 cf Total Available Storage Device Routing Invert Outlet Devices #1 Primary 134.30' 1.1" Horiz. 2yr C= 0.600 Limited to weir flow at low heads #2 Primary 138.05' 12.0" Horiz. 5yr, 10yr, Emergency Overflow C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.81 cfs @ 8.18 hrs HW=138.22' (Free Discharge) L1=2Y' (Orifice Controls 0.06 cfs @ 9.54 fps) 2=5yr, 10yr, Emergency Overflow (Weir Controls 0.74 cfs @ 1.36 fps) Kiddie Academy Tigard Type IA 24-hr 100yr Rainfall=4.50" Prepared by AAI Enginering Inc. Printed 11/17/2020 HydroCAD® 10.00-26 s/n 01638 ©2020 HydroCAD Software Solutions LLC Page 22 Pond 1 P: 48" CMP Hydrograph Inflow I (tASdY I Primary Inflow Area=1.344 ac Peak Elev=138.22' St rage=7 332 cf } u 08?#s LL t4040 /4.;;;„ V-r t...e{. x ej r'ei,... 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Time (hours) ne 4A.t.. a ,.of elOW.v a ,Ya , KIDDIE ACADEMY - TIGARD Appendix F Operations and Maintenance fi z` a+ prr dz 3f 3 Vile 10 F' Kiddie Academy - Tigard STORMWATER OPERATIONS & MAINTENANCE PLAN Kiddie Academy - Tigard December 06, 2020 Prepared by: Craig Harris AAI Engineering 4875 SW Griffith Drive, Suite 300 Beaverton, OR 97005 Responsibility The Catchbasins, Conveyance Piping, Flow Control Manhole, Water Quality Manhole and Water Quality Filter Catchbasins are to be maintained by the owner. These facilities have been designed for ease of maintenance outlined herein. Contact info: Primary: TBD Address: Tel: Email: Department of Environmental Quality- (503)229-5696 Oregon Emergency Response System- (800)452-0311 Description The runoff from the roof and new asphalt/concrete will be collected in new downspouts(Roof) and catchbasins(AC). The runoff from the roof and paved surfaces will be routed through a 48" detention pipe facility prior to Flow Control and then to a Water Quality Filter Vault for treatment. Kiddie Academy - Tigard Niaio Facilities Description Table Facility Name Type Size(SF) Area Treated * IA Treated Discharge Point (SF) 48"Detention Detention 48"Dia. N/A N/A Existing Storm CMP piping Piping Flow Control Flow Manhole N/A N/A Existing Storm Manhole Control piping WQ Filter Water 3x Asphalt+ 17,2508SF Existing Storm Catchbasins Quality (1 cart ea.) Concrete (Total) piping Water 60" Roof 10,682SF Existing Storm WQ Manhole Quality W/3' sump piping * IA=Impervious Area The Water Quality Filter Catchbasins will filter the runoff as it flows through engineered media cartridges. The Water Quality manhole will filter the runoff as it has a built-in sump to catch particulates and a baffle (snout)to trap floatable. There is a flow control riser installed in a Flow Control Manhole that restricts the release rate of the facility to jurisdictional rates. An emergency overflow is provided in the structure to allow the larger flow storms to drain out of the Detention Piping to avoid ponding or surcharging the upstream piping. Once treated the runoff is conveyed to an existing public storm main. Inspection/Maintenance Schedule Each part of the system shall be inspected and maintained quarterly and within 48 hours after each major storm event. For this O&M Plan, a major storm event is defined as 1.0 inches of rain (or more) in 24 hours. All components of the storm system as described above must be inspected and maintained frequently or they cease to function effectively. The Facility owner shall keep a log, recording all inspection dates, observations, and maintenance activities. Receipts shall be saved when maintenance is performed and there is record of expense The following items shall be inspected and maintained as stated: Kiddie Academy - Tigard Catchbasins,Water Quality Manhole,Flow Control Manhole and Pines(Conveyance and Detention): • Sediment shall be removed biannually,more frequently if site produces a high volume of sediment. • Debris shall be removed from inlets and outlets quarterly, or as necessary to maintain free flow of runoff. • Quarterly inspections for clogging shall be performed, or if"ponding" is observed at Catchbasin inlets. • Grates shall be tamper proof. Water Quality Filter Catchbasins: • See manufactures specific O&M manual (attached) Source Control Source control measures prevent pollutants from mixing with stormwater. Typical non-structural control measures include raking and removing leaves, pavement sweeping, vacuum sweeping, and limited and controlled application of pesticides, herbicides and fertilizers. • Source control measures shall be inspected and maintained quarterly. • Signage shall be maintained. Spill Prevention Spill prevention measures shall be exercised when handling substances that can contaminate stormwater. Virtually all sites present dangers from spills. It is important to exercise caution when handling substances that can contaminate stormwater. Activities that pose the chance of hazardous material spills shall not take place near collection facilities. • The proper authority and property owner shall be contacted immediately if a spill is observed. • A spill kit shall be kept near spill-prone operations and refreshed annually. • Employees shall be trained on spill control measures. • Shut-off valves shall be tested quarterly. • Release of pollutants shall be corrected within 12 hours. Insects and Rodents Insects and Rodents shall not be harbored in any part of the storm system. Kiddie Academy - Tigard • Pest control measures shall be taken when insects/rodents are found to be present. Standing water and food sources shall be prevented. • Holes in the ground shall be filled. • Inlets and outfalls shall be inspected and cleaned regularly to ensure no rodent activity, which can clog or decrease the efficiency of the storm system. • Pest control measures shall be taken when insects/rodents are found to be present. Standing water and food sources shall be prevented. Access Access shall be maintained for the Catchbasins, Detention Piping, Flow Control Manhole and Water Quality Vault so operations and maintenance can be performed as regularly scheduled. f f{; Kiddie Academy - Tigard Stormwater Facility Monitoring Log Pollution prevention • All sites shall implement best management practices (BMP's), to prevent hazardous wastes, litter, or excessive oil and sediment from contaminating stormwater. Record Time/Date,weather and site conditions if site activities are found to contaminate stormwater. Maintenance • Record date, description and contractor (if applicable) for all structure repairs, landscape maintenance and facility cleanout activities. Date: Initials: Work performed by: Work performed: Details: Date: Initials: Work performed by: Work performed: Details: sxr.txrnrre.�.�t+rrstta:�. xts�ea++e'uixaax.-*, .a.x.-�.+xr+.uxserurrnvrewrv.reruar€e.wRsemraeurenwr....,vr-,: _.. CONTECH® OPERATION AND ENGINEERED SOLUTIONS MAINTENANCE CatchBasin StormFilterTM Important: These guidelines should be used as a part of your site stormwater plan. Overview The CatchBasin StormFilter" (CBSF)consists of a multi-chamber The concrete and plastic units operate similarly minus the steel, concrete, or plastic catch basin unit. The steel CBSF is presence of the inlet chamber or deep sump. offered both as a standard and as a deep unit for additional internal overflow and sediment capacity. Once in the cartridge chamber, polluted water ponds and percolates horizontally through the media in the filter cartridges. The CBSF is installed flush with the finished grade and is Treated water collects in the cartridge's center tube from where applicable for both constrained lot and retrofit applications. it is directed to the outlet chamber and discharged to the outlet Steel and concrete units can accept surface and piped influent pipe on the downstream side of the overflow weir. for roof leaders or similar applications. When influent flows exceed the water quality design value, The steel, concrete and plastic CBSF units have capacities of excess water spills over the overflow weir, bypassing the 4, 8 and 2 cartridges, respectively. Internal overflow capacity cartridge bay, and discharges to the outlet pipe. varies by system type from 0.5 cfs for the plastic, 1.3 cfs for the concrete and 1.0 or 1.8 cfs for the steel unit. Applications The CBSF is particularly useful where small flows are being Design Operation treated or for sites that have little available hydraulic head. The The CBSF is installed as the primary receiver of runoff, similar unit is ideal for applications in which standard catch basins are to a standard, grated catch basin. The steel and concrete CBSF to be used. Both water quality and catchment issues can be units have an H-20 rated,traffic bearing lid that allows the filter resolved with the use of the CBSF. to be installed in parking lots, and for all practical purposes, takes up no land area. Plastic units can be used in landscaped areas or other non-traffic-bearing applications. Retro-Fit The retrofit market has many possible applications for the CBSF. The CBSF can be installed by replacing an existing catch basin The steel CBSF consists of a sumped inlet chamber and without having to"chase the grade," thus reducing the high cost cartridge chamber(s). Runoff enters the sumped inlet chamber of re piping the storm system. either by sheet flow from a paved surface or from an inlet pipe discharging directly to the unit vault. The inlet chamber is equipped with an internal baffle,which traps debris and floating oil and grease, and an overflow weir. While in the inlet chamber, heavier solids are allowed to settle into the deep sump, while lighter solids and soluble pollutants are directed into the cartridge chamber through a port between the baffle and the overflow weir. New Page 1 www.ContechES.com/stormwater 1800-338-1122 0)2020 Coniech Engineered Solutions,a Quikreie Company OPERATION AND C NT C ENGINEERED SOLUTIONS MAINTENANCE CatchBasin StormFilterTM Maintenance Guidelines Mosquito Abatement Maintenance procedures for typical catch basins can be applied In certain areas of the United States, mosquito abatement is to the CatchBasin StormFilter(CBSF). The filter cartridges desirable to reduce the incidence of vectors. contained in the CBSF are easily removed and replaced during maintenance activities according to the following guidelines. In BMPs with standing water,which could provide mosquito breeding habitat, certain abatement measures can be taken. 1. Establish a safe working area as per typical catch basin service activity. 1. Periodic observation of the standing water to determine if the facility is harboring mosquito larvae. 2. Remove steel grate and diamond plate cover(weight 100 lbs. each) or plastic grating. 2. Regular catch basin maintenance. 3. Turn cartridge(s) approximately '/a turn counter-clockwise to 3. Use of larvicides containing Bacillus thuringiensis israelensis disconnect from pipe manifold. (BTI). BTI is a bacterium toxic to mosquito and black fly larvae. 4. Remove cartridge(s)from catch basin by hand or with appropriate hoisting equipment. In some cases,the presence of petroleum hydrocarbons may interrupt the mosquito growth cycle. 5. Remove accumulated sediment via vactor truck from all interior chambers. 6. Rinse interior of both bays and vactor remaining water and Using Larvicides in the CatchBasin StormFilter sediment. Larvicides should be used according to manufacturer's recommendations. 7. Install fresh cartridge(s), by rotating 1/4 turn clockwise,taking care not to damage cartridge connectors. Two widely available products are Mosquito Dunks and Summit B.t.i. Briquets. For more information,visit https://www.amvac, 8. Replace cover(s). com/products/summit-4ti-briquets. 9. Dispose of accumulated debris and spent media in The larvicide must be in contact with the permanent pool.The accordance with local regulations. larvicide should also be fastened to the CatchBasin StormFilter 10. Return used, empty cartridges to Contech for refurbishing. to prevent displacement by high flows. A magnet can be used Media may be removed from the filter cartridges using the with a steel catch basin. vactor truck before the cartridges are removed from the catch For more information on mosquito abatement in stormwater basin structure once the top cap and hood are removed. The BMPs, refer to the following: https://anrcatolog.uconr.edu/ vactor truck must be equipped with a hose capable of reaching pdf/8 25.pdf. areas of restricted clearance. Empty cartridges can be easily removed from the catch basin structure by hand. Empty cartridges should be reassembled and returned to Contech as appropriate. Refurbished cartridges are available from Contech on an exchange basis. Contact the maintenance department of Contech at 513-645-7770 for more information. Onsite maintenance is estimated at 26 minutes once setup for a single cartridge unit.Add approximately 5 minutes for each additional cartridge. Page 2 www.ContechES.com/stormwater I 800-338-1122 C 2020 Contech Engineered Solutions,a Quikrete Company C''1'NTECH* ENGINEERED SOLUTIONS StormFilter Inspection and Maintenance Procedures g k f e ..m \ t r ( .'''''',.;.1'*" ,1.-*I-tr,,,,:, t The Stormwaler Manageme StormFilter Maintenance Guidelines In addition to these two activities, it is important to check The primary purpose of the Stormwater Management the condition of the StormFilter unit after major storms for StormFilter®is to filter and prevent pollutants from entering our potential damage caused by high flows and for high sediment waterways. Like any effective filtration system, periodically these accumulation that may be caused by localized erosion in the pollutants must be removed to restore the StormFilter to its full drainage area. It may be necessary to adjust the inspection/ maintenance schedule depending on the actual operating efficiency and effectiveness. conditions encountered by the system. In general,inspection Maintenance requirements and frequency are dependent on the activities can be conducted at any time, and maintenance should pollutant load characteristics of each site. Maintenance activities occur, if warranted,during dryer months in late summer to early may be required in the event of a chemical spill or due to fall. excessive sediment loading from site erosion or extreme storms. It is a good practice to inspect the system after major storm events. Maintenance Frequency The primary factor for determining frequency of maintenance for Maintenance Procedures the StormFilter is sediment loading. Although there are many effective maintenance options,we A properly functioning system will remove solids from water by believe the following procedure to be efficient,using common trapping particulates in the porous structure of the filter media equipment and existing maintenance protocols.The following inside the cartridges,The flow through the system will naturally two-step procedure is recommended:: decrease as more and more particulates are trapped. Eventually 1.Inspection the flow through the cartridges will be low enough to require • Inspection of the vault interior to determine the need for replacement. It may be possible to extend the usable span of the maintenance. cartridges by removing sediment from upstream trapping devices on a routine as-needed basis, in order to prevent material from 2. Maintenance being re-suspended and discharged to the StormFilter treatment • Cartridge replacement system. • Sediment removal The average maintenance lifecycle is approximately 1-5 years. Inspection and Maintenance Timing Site conditions greatly influence maintenance requirements. At least one scheduled inspection should take place per year with StormFilter units located in areas with erosion or active maintenance following as warranted. construction may need to be inspected and maintained more 44101 often than those with fully stabilized surface conditions. First,an inspection should be done before the winter season. During the inspection the need for maintenance should be Regulatory requirements or a chemical spill can shift maintenance determined and, if disposal during maintenance will be required, timing as well.The maintenance frequency may be adjusted as samples of the accumulated sediments and media should be additional monitoring information becomes available during the obtained. inspection program.Areas that develop known problems should be inspected more frequently than areas that demonstrate no Second,if warranted,a maintenance(replacement of the filter problems, particularly after major storms. Ultimately, inspection cartridges and removal of accumulated sediments)should be and maintenance activities should be scheduled based on the performed during periods of dry weather. historic records and characteristics of an individual StormFilter system or site. It is recommended that the site owner develop a database to properly manage StormFilter inspection and maintenance programs.. /4 • 2 Maintenance Decision Tree r € : The need for maintenance is typically based on results of the ' v inspection. The following Maintenance Decision Tree should be used as a general guide.(Other factors,such as Regulatory Requirements,may : ---„ need to be considered). g't ', z, Please note Stormwater Management StormFilter devices installed downstream of,or integrated within,a stormwater storage facility h , • , typically have different operational parameters(i.e.draindown time), In „. a ." these cases,the inspector must understand the relationship between the retention/detention facility and the treatment system by evaluating �, ,+r` . 2.i "= site specific civil engineering plans,or contacting the engineer of record, . `` ..,.'' "a and make adjustments to the below guidance as necessary. Sediment ''' 4 deposition depths and patterns within the StormFilter are likely to be quite different compared to systems without upstream storage y "" -.._ and therefore shouldn't be used exclusively to evaluate a need for i4Fr s, •' .[ i -�R .� � �7T ttA ate maintenance. Inspection Procedures 1. Sediment loading on the vault floor. a. If>4"of accumulated sediment, maintenance is The primary goal of an inspection is to assess the condition of the required. cartridges relative to the level of visual sediment loading as it relates to decreased treatment capacity. It may be desirable to conduct this 2. Sediment loading on top of the cartridge. inspection during a storm to observe the relative flow through the a. If>1/4"of accumulation, maintenance is required. filter cartridges. If the submerged cartridges are severely plugged, then typically large amounts of sediments will be present and very 3. Submerged cartridges. little flow will be discharged from the drainage pipes. If this is the a. If>4"of static water above cartridge bottom for more case,then maintenance is warranted and the cartridges need to be than 24 hours after end of rain event, maintenance replaced. is required.(Catch basins have standing water in the cartridge bay.) Warning: In the case of a spill,the worker should abort i. inspection activities until the proper guidance is obtained. 4. Plugged media. *441110 Notify the local hazard control agency and Contech Engineered a.While not required in all cases, inspection of the media Solutions immediately. -. within the cartridge may provide valuable additional To conduct an inspection: information. Important:Inspection should be performed by a person who is b. If pore space between media granules is absent, familiar with the operation and configuration of the StormFilter maintenance is required. r treatment unit and the unit's role,'relative to detention or 5. Bypass condition. retention facilities onsite. a. If inspection is conducted during an average rain fall 1. If applicable,set up safety equipment to protect and notify event and StormFilter remains in bypass condition "3 surrounding vehicle and pedestrian traffic. (water over the internal outlet baffle wall or submerged 2. Visually inspect the external condition of the unit and take notes cartridges), maintenance is required. '' concerning defects/problems. 6. Hazardous material release. 3. Open the access portals to the vault and allow the system vent. a. If hazardous material release(automotive fluids or other) t 4. Without entering the vault,visually inspect the inside of the is reported, maintenance is required. unit,and note accumulations of liquids and solids. 7. Pronounced scum line. ' 5. Be sure to record the level of sediment build-up on the floor of the vault, in the forebay,and on top of the cartridges. If flow a. If pronounced scum line(say a 1/4"thick)is present is occurring, note the flow of water per drainage pipe. Record above top cap, maintenance is required, all observations. Digital pictures are valuable for historical ,4 documentation. 6. Close and fasten the access portals. °; 7. Remove safety equipment. °3 8. If appropriate, make notes about the local drainage area relative to ongoing construction, erosion problems,or high loading of VINO 3i. other materials to the system. r 9. Discuss conditions that suggest maintenance and make decision fzA as to whether or not maintenance is needed. r "f 3 Maintenance ; ►` , Depending on the configuration of the particular system, ,i , maintenance personnel will be required to enter the vault to , perform the maintenance. . A Important. If vault entry is required, OSHA rules for confined space entry must be followed. .: , NIAp Filter cartridge replacement should occur during dry weather. It may be necessary to plug the filter inlet pipe if base flows is ik occurring. ` Replacement cartridges can be delivered to the site or customers '/ facility. Information concerning how to obtain the replacement ' cartridges is available from Contech Engineered Solutions. — •.1. t taw. Warning:In the case of a spill,the maintenance personnel --�- ' i ' !_ �. should abort maintenance activities until the proper guidance ' is obtained.Notify the local hazard control agency and Contech Engineered Solutions immediately. a 4 . ' 'r`,, To conduct cartridge replacement and sediment removal —.' ,. . . .y. r y, , maintenance: 1. If applicable,set up safety equipment to protect maintenance 4 #,, ,,,.,�. personnel and pedestrians from site hazards. i 2. Visually inspect the external condition of the unit and take rt.. I notes concerning defects/problems. 7 '— F': 3. Open the doors(access portals)to the vault and allow the system to vent. 4. Without entering the vault,give the inside of the unit, Important:Care must be used to avoid Damaging tiiiTTN7 iiiitimit including components,a general condition inspection. cartridges during removal and installation.The cost of 5. Make notes about the external and internal condition of repairing components damaged during maintenance will be the vault.Give particular attention to recording the level of the responsibility of the owner sediment build-up on the floor of the vault, in the forebay, C. Set the used cartridge aside or load onto the hauling and on top of the internal components. truck. 6. Using appropriate equipment offload the replacement cartridges(up to 150 lbs.each)and set aside. D. Continue steps a through c until all cartridges have been 7. Remove used cartridges from the vault using one of the removed. following methods: Method 2: Method 1: A. This activity will require that maintenance personnel enter A. This activity will require that maintenance personnel enter the vault to remove the cartridges from the under drain the vault to remove the cartridges from the under drain manifold and place them under the vault opening for manifold and place them under the vault opening for lifting (removal). Disconnect each filter cartridge from the lifting(removal). Disconnect each filter cartridge from the underdrain connector by rotating counterclockwise 1/4 of underdrain connector by rotating counterclockwise 1/4 of a turn. Roll the loose cartridge,on edge,to a convenient a turn. Roll the loose cartridge,on edge,to a convenient spot beneath the vault access. spot beneath the vault access. B. Unscrew the cartridge cap. Using appropriate hoisting equipment,attach a cable C. Remove the cartridge hood and float. from the boom, crane, or tripod to the loose cartridge. Contact Contech Engineered Solutions for suggested D. At location under structure access,tip the cartridge on its attachment devices, side. B. Remove the used cartridges(up to 250 lbs.each)from the E. Empty the cartridge onto the vault floor. Reassemble the vault. empty cartridge. 444 F. Set the empty, used cartridge aside or load onto the `�+ hauling truck. G. Continue steps a through e until all cartridges have been removed. 4 8. Remove accumulated sediment from the floor of the Material Disposal vault and from the forebay.This can most effectively be The accumulated sediment found in stormwater treatment accomplished by use of a vacuum truck. and conveyance systems must be handled and disposed of in 9. Once the sediments are removed,assess the condition of the accordance with regulatory protocols. It is possible for sediments vault and the condition of the connectors. to contain measurable concentrations of heavy metals and 10.Using the vacuum truck boom, crane,or tripod, lower and organic chemicals(such as pesticides and petroleum products). install the new cartridges. Once again,take care not to Areas with the greatest potential for high pollutant loading damage connections. include industrial areas and heavily traveled roads. 11.Close and fasten the door. Sediments and water must be disposed of in accordance with 12.Remove safety equipment. all applicable waste disposal regulations.When scheduling 13.Finally,dispose of the accumulated materials in accordance maintenance,consideration must be made for the disposal of with applicable regulations. Make arrangements to return the solid and liquid wastes.This typically requires coordination with used empty cartridges to Contech Engineered Solutions. a local landfill for solid waste disposal.For liquid waste disposal a number of options are available including a municipal vacuum truck decant facility,local waste water treatment plant or on-site treatment and discharge. Related Maintenance Activities - Performed on an as-needed basis .j StormFilter units are often just one of many structures in a more comprehensive stormwater drainage and treatment system. r�s � ' In order for maintenance of the StormFilter to be successful,it is imperative that all other components be properly maintained. The maintenance/repair of upstream facilities should be carried out prior to StormFilter maintenance activities. e In addition to considering upstream facilities, it is also important to correct any problems identified in the drainage area.Drainage area concerns may include:erosion problems, heavy oil loading, '' '. bw and discharges of inappropriate materials. >•�- p 0 III 1: r. '' „4 . 5 Inspection Report Date: Personnel: Location: System Size: Months in Service: System Type: Vault Cast-In-Place ❑ Linear Catch Basin ❑ Manhole Other: Sediment Thickness in Forebay: Date: Sediment Depth on Vault Floor: Sediment Depth on Cartridge Top(s): Structural Damage: Estimated Flow from Drainage Pipes(if available): Cartridges Submerged: Yes No —I Depth of Standing Water: StormFilter Maintenance Activities(check off if done and give description) ❑ Trash and Debris Removal; ❑ Minor Structural Repairs: ❑ Drainage Area Report Excessive Oil Loading: Yes ❑ No ❑ Source: Sediment Accumulation on Pavement: Yes —I No Source: Erosion of Landscaped Areas: Yes ❑ No ❑ Source: Items Needing Further Work: Owners should contact the local public works department and inquire about how the department disposes of their street waste residuals. Other Comments: Review the condition reports from the previous inspection visits. StormFilter Maintenance Report Date: Personnel: IVO Location: System Size: System Type: Vault❑ Cast-In-Place Linear Catch Basin ❑ Manhole ❑ Other: List Safety Procedures and Equipment Used: System Observations Months in Service: Oil in Forebay(if present): Yes ❑ No Sediment Depth in Forebay(if present): Sediment Depth on Vault Floor: Sediment Depth on Cartridge Top(s): Structural Damage: Drainage Area Report Excessive Oil Loading: Yes No ❑ Source: Sediment Accumulation on Pavement: Yes ^ No n Source: ,4111, Erosion of Landscaped Areas: Yes 7 No = Source: StormFilter Cartridge Replacement Maintenance Activities Remove Trash and Debris: Yes 7 No J Details: Replace Cartridges: Yes ❑ No ❑ Details: Sediment Removed: Yes C No ❑ Details: Quantity of Sediment Removed (estimate?): Minor Structural Repairs: Yes No —1 Details: Residuals(debris,sediment) Disposal Methods: Notes: y RECYCLED PAPER CONTECH" ENGINEERED SOLUTIONS ©2020 CONTECH ENGINEERED SOLUTIONS LLC,A QUIKRETE COMPANY 800-338-1122 www,ContechES.com All Rights Reserved. Printed in the USA. Contech Engineered Solutions LLC provides site solutions for the civil engineering industry.Contech's portfolio includes bridges, drainage,sanitary sewer,stormwater and earth stabilization products. For information on other Contech division offerings,visit www.ContechES.com or call 800,338.1122. Support • Drawings and specifications are available at www.conteches.com. • Site-specific design support is available from our engineers. NOTHING IN THIS CATALOG SHOULD RE CONSTRUED AS A WARRANTY.APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DECISIONS,AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION,CONTECH MAKES NO WARRANTY WHATSOEVER,EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS,MATERIALS,COATINGS,OR PRODUCTS DISCUSSED HEREIN,ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH'S CONDITIONS OF SALE(AVAILABLE AT WWWCONTECHES;COM/COS)FOR MORE INFORMATION. 800.338.1122 www.conteches.com StormFilter Inspection and Maintenance Procedures 4/20