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1993-3741 CN/G Street Address Category Serial # Name Description Plan ck. # Year 1 r 1 HYDROLOGY & HYDRAULICS REPORT OCEANVIEW HOSPITAL TEMPORARY OFF -SITE PARKING ENCINITAS, CALIFORNIA CT 08 1993 ENGINEERING, ;3CF1111C; Prepared for: CITY OF ENCINITAQ, SCRIPPS HEALTH FACILITIES DEVELOPMENT � ®Q ,VnEESS/py� F .,` ° NO. 44171 ° oc Exp klo- civ r ' Prepared by: or cR�`� PETER R. SAFINO, R.C.E. 71 ' September 27, 199 ' PLANNING • DESIGN • CONSULTATION Cis Engineering Structural Engineering Land Surveying 3615 Kearny Villa Road, Suite 201 • San Diego, California • 92123 • (619) 560 -1141 t TABLE OF CONTENTS ' PROJECT DESCRIPTION .. ............................... 1 METHODOLOGY ........ ............................... 1 EXHIBITS A. DRAINAGE MAP ..................... INSIDE BACK COVER B. HYDROLOGY & INLET CALCULATIONS ................. 2 -3 C. HYDRAULIC CALCULATIONS .......................... 4 L APPENDICES I. SELECTED COUNTY OF SAN DIEGO CHARTS & NOMOGRAPHS 5 -13 1 W:\CIVIL\OCNVIEW\REPORTS\4042200.JMF ' 8B ' PROJECT DESCRIPTION The temporary off -site parking lot for the Oceanview Hospital is located at the northeast corner of Santa Fe Drive and Evergreen Drive. The existing site is approximately 2.5 acres and is currently vacant. The finished lot will provide parking for approximately 34 automobiles. Access will be via Evergreen Drive (see Exhibit "A "). The existing drainage pattern is from the northeast corner to an existing swale at the southwest corner. METHODOLOGY The scope of the report is limited to design of the parking lot drainage facilities. In accordance with the City of Encinitas design standards, the County of San Diego rational method hydrology was used to calculate run -off using 10 -year and 100 -year storms. Hydrologic calculations for both storms and a comparison between existing and proposed conditions is presented in Exhibit "B ". Hydraulic and inlet calculations are shown in Exhibit "C ". Selected charts, tables, nomographs and design information from the County of San Diego Drainage Design Manual are contained in Appendix I. SB &O. INC. Oceanview Hospital Job No. 40422.00, September 27, 1999 1 of 13 Encinitas, CA 1 8B EXHIBIT B PAGE 1 OF 2 0 U 0000 ai °U —al z NNNN tV Z N N l'9 of t0 N n T UD O �Ols OOCC p W 01 NCV6.6 O ' w , O NO�t00 O •- J F OmbO ►� a U Q 0a qq-:q Z ���;0 O O 8 E N H o z o Q cl N w 0 x 0060 0 � x o z ' o w c 0 000 cs a � � v o O Q. �Q a iONNN W QV -- 6660 Qa � i 0 cc r v U a 0 J U Y z "' U IL Ne C7 0 � 8 a `~ Z z ,0< W O a 0 Cc 0z ° m a ¢ } s W CC2t co 2 O J a Z d� �� U A C C ►rr � Q Q n�i � Q m h SB&0,INC. Oceanview Hospital Job No. 40422. 00, September 27, 1993 2 Of 13 EncWWs, CA SB EXHIBIT B PAGE 2 OF 2 0 N Ql�i A C C N QLL N U U C4 Ci q tp N t• O 0000 F_ O U (� N N 0) W) (A ii o n z v� s� 8F J� I 0 0 � z � � x W 0 0000 0 CR x o C t� z ��i O U a m� v W U v 0000 0 V R;' ¢Q s8 && ` W ¢a q z z CY C N Q a 0 J a � OTC J d d v Q) Q a U rs Y ? 3 V � z � Y o V z Z O o a LL C7 0 o a CC o ° z�° ? � ¢ } b O w Q¢� o Q � A o z903 v A o cs a x a< a a y SB &O. INC. Oceanview Hospital Job No. 40422 00, September 27, 1993 3 of 13 Encinitas, CA EXHIBIT C OCEANVIEW HOSPITAL - ENCINITAS PAGE 1 OF 1 ' RAULIC CALCULATIONS 100 YEAR STORM COUNTY OF SAN DIEGO 1 N & E OF NEW PK'G (BROOKS 2424) GRATED INLET WEIR FLOW Q= 1.1 DEPTH (H) 0.5 FT O/P 1.1 PERIMETER 1.0 FT ' PEO'D P (CF =.5) 2.0 FT USE 24 INCH 24 INCH ACTUAL P 2.0 FT AVAILABLE PERIMETER IS LIMITED TO APPROACH FROM SINGLE SIDE A213 AC SWALE - PARKING LOT Q= 1.7 CFS DEPTH (H) 0.17 FT n= 0.015 DEPTH/DIA 0.06 1 0- 3 FT VELOCITY 10.90 FPS S= 22.50 % ' A2/3 AC SWALE a- 1.7 CFS DEPTH (H) 020 FT ' n- 0.015 DEPTH/OIA 0.04 D= 5 FT VELOCITY 6.60 FPS ' S= 6.50 % A EXISTING SWALE O= 2.9 CFS DEPTH (H) 0.29 FT n= 0.015 DEPTHIDIA 0.07 D= 4 FT VELOCITY 5.70 FPS S= 4.80 % ' Q PIPE FRICTION DESIGN VEL HEAD HEAD DIA SLOPE( SLOPE REO'D AVAIL ' Al PIPE CALC 6' PVC 1.1 6 3.71% 6.60% 5.5 121 1.50 ' SB0l 3:\QUATIR0\40422\4N22H &H.WQI 0927/93 4042100 SB &O, IXC Oceanview Hospital Job No. 40422. 00, September 27, 1993 4 of 13 Encinitas, CA 'SB APPENDIX I PAGE 1 OF 9 0 ' TABLE 2 .RUNOFF COEFFICIENTS (RATIONAL METHOD) ' DEVELOPED AREAS (URBAN) Coeffici t Land Use Soil Group (1) Residential: - A 8 C D ' Single Family .40 .45 .50 .55 Multi -Units .45 .50 .60 .70 Mobile homes .45 .50 .55 .65 i Rural (lots greater than 112 acre)•. .30 .35 .40 .45 Cowmrei al (2) "',.• .76 .75 .80 .85 ' 80% Impervious IndustrialM 90% Impervious .80 .85 .90 ' NOTES: (l) Sail Group -maps are available at the offices of the Department of Public Works. ' ( actual conditions deviate significantly from the tabulated i be ness values of 80% or 90%. the values given for coefficient C. may be revised by maitiplying 80X. or 94 by the ratio of actual imperviousness to the tabulated imperviousness. However, in no case shall the final coefficient ' be less than 0.50. For example: Consider commercial property on D soli,-group. Actual imperviousness - 50% Tabulated imperviousness - 8o% Revised C - 800 x 0.85 - 0.53 IV -A -9 ' APPENDIX IX -B Rev. S /81 SB &O, INC. Oceantiew Hospital Job No. 40422. 00, September 27, 1993 5 of 13 Encinitas, CA ' APPENDIX I PAGE 2 OF 9 LU f - N C2 In p v ® r� • /1 Cc Q Lu J , lV1T IiI n l - s i W�z 2 pp Q .Ma SO 2 H _ QOO N� �n.C., !•1 � a V y`, O + Z O M Q O U V - N O J 31 6 O V. „ • � L D 1 7 i j V W • h SBdO, INC. Oceanview Hospital Job No. 40422.00, September 27, 1993 6 of 13 Encinitas, CA APPENDIX I PAGE 3 OF 9 IIf • V 1 C2 C.3, M C2 CZ C / .7 W LLJ cn �ii� Q •�+ � .� � • � K q 11 W ' I • C " �. • ua N - , C c - UJ —�-�' o Cco. - , J e°n s� oW t i 1 t W � � < • ' � s • = • Q� L } O "�O C� I 1 • p q us c J. • u V LL 1 E oleo you' Fr o IK ad o° oa W U- N �cu- M- u ' 11-A-10 SBBO, INC. Oceanview Hospital Job No. 40422 00, September 27, 1993 7 of 13 Encinitas, CA APPENDIX I PAGE 4 OF 9 to - :Y o J Av UZI A � CD _ " Ca •N ! c C3 cr / V ® N . © A Y ~/tills �. }+ � !' r ' • ` . � p .� L 0 5. ~t �•N ~ u C1 a.. v ' W • Y W L c a w M a I b '5 oa Z 8 .°. s0so g- 0 CO I a • C �� C N 0 C M vi o v 1 > o 0 c ° s ol' i . i za I u ' Y II - A - 7 SR &O, INC. Oceanview Hospital Job No. 40422. 00, September 27, 1993 8 of 13 Encinitas, CA 1 APPENDIX I PAGE 5 OF 9 0 d C9 V c a: = N � j O e r �u tq ii( e t+ � �-- v .�. e • � �' � � � ma •� - l . '\,c%. ca cz � s - O CL, =� o Y at ' < - s va I le ' b 2-:�s z 8�ga o ° 0 . ( O p 0 • ' lis2 — '� < L py ' V b - - - - d• , � Ir_ Z •7 M 3 Q Y M Ow0 v � V H o �-} • < x M O' u O U- w X H N 3 U W G / N IT �A�13 SB &O, INC. Oceanwew Hospital Job No. 4042200, September 27, 1993 9 of 13 Encinitas, CA IB APPENDIX I PAGE 6 OF 9 10 u O CT t i �0 b N t C Go f0 m V N M .0 . - . 1• of U S- C C lu G Win L J rO-• M d C W< +m+ aui 4=.r 6 r: ° ~ m I m ' vas CS_� o o c N r -prC O. fA �N '' b .� o m #A nm N $ c oo: a .- r t C.o o at mo +• m.s 4 a d b C L r t7 O r r -e- Of +• Of C rC J] C "a i.1 C 0, n o 7 C V pN C V •"' 4.f u L L u u i. Z d W C b N 4 n n 4b 4J L 7 L C r L L 4•r N ~ L +� m C v f r O.0 Q O M O Z7 Z N A C r r p U. gv C -•- L ++ L .0 �•-r- m 05 V - N n • •••• C 4+ • er' N fpm m d •-•• O O 4+ ` 4+ ' v C L m b f7► N N m .0 4� •� ..� � p E l m C N '� 4.f D 1•f +f u N fi N 1•� rr.. l3 Z C 4+ 4a 4.� p•_ O G n 4•f •V h 0. • Q N f-• L r' n 6-Hour Precipitation (inches) ONO fAO fp o to o •• ld G fptllfp ��hM M N •- •r N ` N •..s .� >: -.4 N • t+ P. sr•- fS m :380A O i US 1 4a LL 1=0 qr cn C�j 03 'i • i•.II 1 I 1 + 11 1 ! 1 !' I 1• 'Ili: 'i,l 1, 7 1 1 •1 Y APPENDIX XI IV -A -14 SB &O, INC. OceanWew Hospital J ob No. 40422. 00, September 27, 1993 10 of 13 Encln;ras, CA APPENDIX I PAGE 7 OF 9 ♦s 4- /= O r N t17 .k O N are to 44 V C� rC� 7 NOr d U O k ' C X1. N ++.- is to 17 W%- 0. " •'C d 11 0. L ,� N d C cx C c 1, N C �- b ++ VJ N •.- 0. E N G 4- V- O L O- Q C • a' iJ GL L +,. ' C) 44 E^ v ~ C O w N N m.— .-- m c r v 1 � 0. O m d E 8 Nr aC 4? =.* c C Q. N d +� 0.O W Nr 4.1 Qm�C,:V d - T' Z c Q +J Al 4•1 ' '•" E 4 -4.2 .-- m r .c 40 A N 4 +' c s. n+A 4+ 1 t d C L r •C 7 r r r C1 v cn .a v oos cc v =lo. c c v o. 402 E c v r - M O m •r• c r r a d c41a m .c s 7 a ++++ >� s_ s,. s+ N a < Q • c 0 d �0. $, a 11.41 m N C E m Y 40 -CC ? O V a =! C ' 4 S: • X. •Cep m41 IL ^ V - m ra d.► d i. = u c d• •o a t� \ x VA . s- E 41' m 'v r v c 0 410 1c . a 16 r c 4/rd'N b m C f.md O N Nm rC dM ^� ..� V N - +° - E i m c - o s+ 10 4a r+ I' p •�!d 1'J A 10 rm 4 N •; N N f. d• �C m � Z Z O 44 -04- V m 1%0 • b a 4.N1 -C <s+ 4a 4 4,0 G O.i+ r N a• < 4.0 tr C r n Li < 40 r' N M et Ilq 644dur Precipitation (inches) ca N Oui0a0W O O to 40 cm _ n r- . �- O '- • ���.... � •r1 ►tee - « � s }' 0.. •d ItA Q !� O 1 • •� -L• / ok It V N cam • M �� — — rT � N �f {L1 cij -` s d .t CD APPCNDIX XI IV -i4 -14 SR&O, INC. 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Cif E (b , 1 Es H EA S 8 T E _� Q L-: A ION ' SEC TOR 8 6PE!RghloN is I N Dk hN 1 r a tt r W DISE;t ARG P E PE O T O- lEA / !1 ' I O.t X • ,S .< • ,3 ,6 • 7 .8.91.0 E S , CR < E 6 7 d 1 10 2G BvREAU OF PU8UC ROADS CAPACITY - OF GRATE INLET IN SUMP ' _&:•,SiONTWO -WASK,D.C. WATER PONOEO ON GRATE 1 SB &O, INC. Oceamiew Hospital Job No. 40422.00, September 27, 1993 13 of 13 Encinitas, CA