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HomeMy WebLinkAboutSDP 2023-0026; LEGOLAND DRIVING SCHOOL RELOCATION; FINAL HYDROLOGY STUDY FOR LEGOLAND DRIVING SCHOOL RELOCATION; 2024-03-11- i - March 11th, 2024 FINAL HYDROLOGY STUDY FOR LEGOLAND Driving School Relocation 1 Legoland Drive Carlsbad, CA 92008 SDP2023-0012 CDP2023-0022 (DEV2023-0061) GR2024-0003 DWG-546-7A Prepared For: Merlin Entertainments Group US Holdings, A Delaware Corporation 1 Legoland Drive Carlsbad, CA 92008 Contact: Tom Storer Tel: (858) 334-8938 Prepared By: Today’s Ideas. Tomorrow’s Reality. 695 Town Center Drive #110 _____________________________ Costa Mesa, CA 92626 Aaron M. Albertson, P.E. Tel: (949) 610-8997 R.C.E. 65513, Exp. 09/30/25 Hydrology Study LEGOLAND California Project 2025 - i - TABLE OF CONTENTS SECTION I. INTRODUCTION .......................................................................................................... 1 II. DESIGN CRITERIA AND ASSUMPTIONS .................................................................. 2 III. DISCUSSION ............................................................................................................. 3 A. EXISTING CONDITIONS ...................................................................................... 3 B. PROPOSED CONDITIONS ................................................................................... 3 IV. CONCLUSION ........................................................................................................... 4 V. DECLARATION OF RESPONSIBLE CHARGE .......................................................... 5 VI. REFERENCES ........................................................................................................... 6 ATTACHMENTS ATTACHMENT 1 – LOCATION, PRECIPITATION, AND SOIL MAPS ATTACHMENT 2 – EXISTING HYDROLOGY MAP & CALCULATIONS ATTACHMENT 3 – PROPOSED HYDROLOGY MAP & CALCULATIONS ATTACHMENT 4 – STORM DRAIN SIZING CALCULATIONS ATTACHMENT 5 – WATER QUALITY/HYDROMODIFICATION LETTER ATTACHMENT 6 – REFERENCED IMPROVEMENTS PLANS, EXISTING 24” SD CCTV UTILITY INSPECTION Hydrology Study LEGOLAND California – Driving School - 1 - I. INTRODUCTION Background/Purpose The purpose of this study is to determine stormwater runoff and site drainage for a 100- year storm event for a proposed redevelopment at Legoland in the city of Carlsbad, California. The proposed project is being completed by Legoland and is located at 1 Legoland Drive in the city Carlsbad, county of San Diego. The studied area consists of approximately 0.522 acres. The project site is bounded by an existing retail store to the north, and existing Legoland attractions to the east, west, and south. Existing project site consists of a Legoland attraction and landscaped area. Proposed re-development consists of removing the driving attraction, patio, area, and landscaping. Existing landscape areas and underground utilities will be revised as needed. Site elevations range from approximately 164 to 166 feet above mean sea level (MSL). See Site Location Map in Attachment 1. The project site is located within the Canyon de Las Encinas (904.4) hydrologic area of Carlsbad Watershed Management Area (WMA) of the San Diego Region (9). Legoland owns the storm drain network constructed per City Drawing No. 333-2Y and the regional BMPs adjacent to Palomar Airport Road that project runoff flows to constructed per SDP 15-26/CDP 15-50 dated 06/30/2018. The private storm drain system discharges to Canyon de las Encinas, then ultimately the Pacific Ocean. Hydrology Study LEGOLAND California – Driving School - 2 - II. DESIGN CRITERIA AND ASSUMPTIONS Hydrology Methodology Hydrologic calculations were performed to determine the 100-year discharges at critical locations using the Rational Method. A technical description of the rational method is provided in the San Diego County Hydrology Manual dated June 2003. As recommended in the Manual, the rational method was used to calculate the design discharge for the local drainage areas due to the watershed area to the proposed storm drain system being less than one square mile. Runoff calculations were performed in conformance with the requirements of the County of San Diego Drainage Design Manual dated July 2005 and the San Diego County Hydrology Manual dated June 2003 by use of Advanced Engineering Software (AES). The design discharges were computed by generating a hydrologic “link-node” model which divides the area into subareas, each tributary to a concentration point or hydrologic “node” point determined by the proposed site layout. The results of the hydrologic calculations are used to design proposed storm drain facilities and are included in Section 3. Hydrologic Parameters/Assumptions Soil Type: Hydrologic soil ratings are based on a scale of A through D, where A is the most pervious, providing the least runoff. Per the soil map from NRCS (see Attachment 1), the study area consists entirely of Type B soils. 6-Hour Rainfall Precipitation (P6): Per San Diego County Hydrology Manual (2003) Rainfall Isopluvial Maps (see Attachment 1), the 6-hour rainfall precipitation for a 100- year event is 2.60 inches. The 24-hour rainfall precipitation for a 100-year event is 4.50 inches. The 6-hour rainfall precipitation is within 46-65% of the 24-hour rainfall values, so P6 does not need to be adjusted for the hydrology calculations. Runoff Coefficient (C): Runoff coefficients are per Table 3.1 in the San Diego County Hydrology Manual (2003). Time of Concentration (TC): The time of concentration is determined using AES in conformance with the County and City’s hydrology manuals. Printouts are included in Attachments 2. Hydrology Study LEGOLAND California – Driving School - 3 - III. DISCUSSION Existing Condition The existing project site is developed as an outdoor driving attraction with AC pavement roads, concrete walkway, decorative pavers, landscaped areas, and underground utilities. The existing 0.522 AC studied area consists of 2 major drainage areas (DA-A & DA-B). Existing condition is 86% impervious and 14% pervious surface. All runoff is directed to existing inlets and conveyed by the 24” storm drain line to Legoland’s regional stormwater detention basin for hydromodification flow control and treatment BMPs south of the project site. Runoff is then conveyed to Canyon de las Encinas and ultimately the Pacific Ocean. A map of the existing drainage patterns and the runoff calculation results are included in Attachment 2. Peak flows for the existing studied area are summarized in Table 1 below. Proposed Condition Proposed development consists of 2 major drainage areas (DA-A and DA-B). The studied area includes project site areas flowing to new onsite inlets, which is approximately 0.522 acres. Proposed project alters existing drainage subareas. Proposed inlets and storm drain laterals are sized to convey flows from a 100-year storm event. All post-development runoff is directed to the existing storm drain system and is conveyed to Legoland’s regional BMP as it does in the existing condition. The studied area is comprised of 86% impervious and 14% pervious area. Proposed redevelopment will slightly decrease total impervious area for the project site. Project overflows will be discharged to the existing 24” storm drain at the northwest corner of the site. Additionally, the downstream water quality treatment system has already been sized to treat the anticipated increase in impervious area per letter from Luis Para (Attachment 5 – will be provided in next submittal). Therefore, additional flow control or treatment BMPs do not need to be constructed for the proposed project. A map of the proposed drainage patterns and the runoff calculation results are included in Attachment 3. Peak flows for the proposed project site condition are summarized in Table 1 below. Table 1 – Summary of Unmitigated Peak Flowrates Drainage Area: DA-A and DA-B Area (ac) % Imp. Q100 (cfs) Existing Condition 0.522 84% 2.86 Proposed Condition 0.522 86% 2.88 [Proposed – Existing] [Existing] 0% +2% +0.7% Existing 24” CMP SD line will be abandoned and the proposed 24” HDPE SD line will convey existing/proposed runoff to the existing catch basin at the northwest corner of the site. The existing 24” CMP SD line was inspected by AIRX. The CCTV inspection is Hydrology Study LEGOLAND California – Driving School - 4 - provided in Attachment 6. The existing 24” SD line shown in the referenced improvement plan in Attachment 6 was analyzed and determined to have less capacity than the proposed 24” HDPE SD line. Therefore, the proposed 24” HDPE line can convey existing/proposed runoff. See existing/proposed pipe capacity results in Table 2 below. Table 2 – EX 24” CMP Pipe and Prop 24” HDPE Pipe Capacity STA 11+37.71 to 13+70.13 New Alignment EX 24" CMP Pipe Proposed 24" HDPE Pipe Capacity Capacity Diameter(in) 24 A(ft2) 3.14 Diameter(in) 24 A(ft2) 3.14 n(CMP) 0.022 P(ft) 6.28 n(HDPE) 0.012 P(ft) 6.28 Slope 2.30% R(A/P) 0.5 Slope 1.00% R(A/P) 0.5 Q(ft3/s) 20.27 Q(ft3/s) 24.51 V (ft/s) 6.45 V (ft/s) 7.80 STA 13+70.13 to 17+68.30 EX 24" CMP Pipe Proposed 24" HDPE Pipe Capacity Capacity Diameter(in) 24 A(ft2) 3.14 Diameter(in) 24 A(ft2) 3.14 n(CMP) 0.022 P(ft) 6.28 n(HDPE) 0.012 P(ft) 6.28 Slope 1.00% R(A/P) 0.5 Slope 1.00% R(A/P) 0.5 Q(ft3/s) 13.37 Q(ft3/s) 24.51 V (ft/s) 4.26 V (ft/s) 7.80 IV. CONCLUSION The project’s storm drain network is sized to convey flows from the 100-year storm event. Storm drain pipe and inlet capacity hydraulic calculations are included in Attachment 3. A portion of the existing 24” storm drain line will be abandoned and replaced with a 24” HDPE storm drain line. Project overflow locations will remain unchanged with runoff discharging to the existing 24” storm drain line at the northwest corner of the site. Hydrology Study LEGOLAND California – Driving School - 5 - V. DECLARATION OF RESPONSIBLE CHARGE I, hereby declare that I am the Engineer of Work for this project, that I have exercised responsible charge over the design of the project as defined in section 6703 of the business and professions code, and that the design is consistent with current standards. I understand that the check of project drawings and specifications by the County of San Diego and City of Carlsbad is confined to a review only and does not relieve me, as Engineer of Work of my responsibility for project design. ENGINEER OF WORK: Commercial Development Resources 695 Town Center Drive #110 Costa Mesa, CA 91626 Tel: (949) 610-8997 03/11/2024 Aaron M. Albertson R.C.E. 65513, Exp. 09/30/23 Date Hydrology Study LEGOLAND California – Driving School - 6 - VI. REFERENCES 1. City of Carlsbad Storm Water Manual 2008. 2. San Diego County Hydrology Manual (June 2003). 3. San Diego County Drainage Design Manual (July 2005). 4. Web Soil Survey, San Diego Area, California. United States Natural Resource Conservation Service. 5. Advanced Engineering Software (AES), © 1983-2016 Version 23.0, San Diego County Hydrology Criterion. Hydrology Study LEGOLAND California – Driving School ATTACHMENT 1 Location Map Precipitation Maps & Soil Maps VICINITY MAP: 1 Legoland Drive Carlsbad, CA 92008 (NOT TO SCALE) N I j ~--t-t-i-----t-----t-+-t-+-++-+-1-+- -----t-----t-+---l-----t-----t-+---1-+-+-+---1-+--+-;0r--t-----t----t-+-1-------t--+--+---+--+--+-+-+-l---t - 32°-80 9 U1? ~ ;TT" Ii--r-t ..,... ...,. 'T 'T I j j l() Q +-d CD If' 0 ...... Ii'--...... ...... ...... 9 C!) 0 Ii-..,... "T rb ~ s;I" C") 0 cp cp ..,... ';: ..,... UI) G!> s;I" ~ 01 tip up ...,.. ...,. 'T 'T <lei j- cp . 33 30' -f- 32°30' ---. ~ T 3 County of San Diego Hydrology Manual Rainfall Isopluvials 100 Year Rainfall Event-6 Hours lsopluvial (inches) 3 Miles I I _I j {.. _I ~ If) IA r' ...... CD s;I" d lj--i 0 0 lj--~ ...... ...... ...... ...... ..,... . 3£"i30 Q;) c. ;:.!._ -w ~ C!) s:i- Ii--0 0 1 I"/-~ up ..,.. ...,. ..,.. T "T ,-i J j 1--+-+---1--+-+-+-1--+-+---1--+-+-1--e ,-+--+-+->-+--+--+--+--+-+----<--+--+--1-1A"-+---+---+--+-+->-+--+---+--+--+-+----ar-1 ~ .... -+-+-+-l--+-+---l--+-+-+-1----+-+-+-cb c:, .... ---32 30' ~ ~ ~ 3 ~ ~ ...,. "T ,- County of San Diego Hydrology Manual Rainfall Isopluvials 100 Year Rainfall Event-24 Hours lsopluvial (inches) DPW ~GIS sffi=GIS s 0 Oeps.r'.menr oi P(itiiC Wo.'ks GGO_f}{Vpf/k. l11forrr,<1/kJ!1 &-rv,Y,;I')~ 'i;i/c Have San Diq;:() Covered! THIS MAP IS PROVIDED WITHOUT WARRANTY OF />NY KIND, EllHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMllED TO, lHE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Copyright SanGIS. All Rights Reserved. This products may contain information from the SANDAG Regional Information System which cannot be reproduced without the written permission of SANDAG. This product may contain information which has been reproduced with permission granted by Thomas Brothers Maps. 3 Miles Hydrologic Soil Group—San Diego County Area, California (23037 - Legoland Driving School) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/25/2023 Page 1 of 4 36 6 5 5 0 0 36 6 5 5 1 0 36 6 5 5 2 0 36 6 5 5 3 0 36 6 5 5 4 0 36 6 5 5 5 0 36 6 5 5 6 0 36 6 5 5 7 0 36 6 5 5 8 0 36 6 5 5 9 0 36 6 5 6 0 0 36 6 5 6 1 0 36 6 5 5 0 0 36 6 5 5 1 0 36 6 5 5 2 0 36 6 5 5 3 0 36 6 5 5 4 0 36 6 5 5 5 0 36 6 5 5 6 0 36 6 5 5 7 0 36 6 5 5 8 0 36 6 5 5 9 0 36 6 5 6 0 0 36 6 5 6 1 0 470720 470730 470740 470750 470760 470770 470780 470790 470800 470720 470730 470740 470750 470760 470770 470780 470790 470800 33° 7' 43'' N 11 7 ° 1 8 ' 5 0 ' ' W 33° 7' 43'' N 11 7 ° 1 8 ' 4 6 ' ' W 33° 7' 40'' N 11 7 ° 1 8 ' 5 0 ' ' W 33° 7' 40'' N 11 7 ° 1 8 ' 4 6 ' ' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 11N WGS84 0 25 50 100 150 Feet 0 5 10 20 30 Meters Map Scale: 1:569 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: San Diego County Area, California Survey Area Data: Version 18, Sep 14, 2022 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Mar 14, 2022—Mar 17, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Hydrologic Soil Group—San Diego County Area, California (23037 - Legoland Driving School) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/25/2023 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI MlC Marina loamy coarse sand, 2 to 9 percent slopes B 0.9 100.0% Totals for Area of Interest 0.9 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Hydrologic Soil Group—San Diego County Area, California 23037 - Legoland Driving School Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/25/2023 Page 3 of 4 Component Percent Cutoff: None Specified Tie-break Rule: Higher Hydrologic Soil Group—San Diego County Area, California 23037 - Legoland Driving School Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 9/25/2023 Page 4 of 4 Hydrology Study LEGOLAND California – Driving School ATTACHMENT 2 Existing Condition Map & Hydrology Calculations 165 166 167 1 6 5 1 6 6 1 6 5 167 1 6 5 160 161 162 1 6 7 166 EX I S T I N G B U I L D I N G (N . A . P ) NODE 1.01 165.91EL NODE 1.02 165.71TGQ100=0.09cfsNODE 1.07 165.63TGQ100=0.02cfs NODE 1.04 165.73TG Q100=0.01cfs NODE 1.05 165.62TG Q100=0.02cfs NODE 1.08 165.58TG Q100=3.65cfs NODE 1.09 165.71TGQ100=0.01cfs NODE 1.10165.54TG Q100=0.02cfs NODE 1.12 165.51TG Q100=0.02cfs NODE 1.14165.78TG Q100=0.01cfs NODE 1.15 165.65TGQ100=0.02cfs NODE 1.17 165.61TGQ100=0.02cfs NODE 1.19165.56TG Q100=0.06cfs NODE 1.20 165.55TGQ100=0.01cfs NODE 1.21165.78TG Q100=0.02cfs NODE 1.23 165.51TG Q100=0.02cfs NODE 1.25165.66TGQ100=0.26cfs NODE 1.26 165.60TG Q100=0.22cfs NODE 1.27 165.26ELQ100=0.24cfs NODE 1.28165.04TG Q100=0.07cfs NODE 1.29 165.08TGQ100=0.07cfs NODE 1.30 164.98TG Q100=0.07cfs NODE 1.31165.00TG Q100=0.07cfs NODE 1.34 165.40TG Q100=0.14cfs NODE 1.33165.43TG Q100=0.14cfs NODE 1.35 165.07TG Q100=0.07cfs NODE 1.36 165.08TG Q100=0.07cfs NODE 1.37165.02TG Q100=0.07cfs NODE 1.38 165.07TGQ100=0.15cfs NODE 1.41 165.37TGQ100=0.06cfs NODE 1.40 165.36TG Q100=0.03cfs NODE 1.39165.67TGQ100=0.13cfs NODE 1.32165.01TG Q100=0.08cfs A1 0.02 A2 0.01 A7 0.02 A6 0.01 A4 0.01 A5 0.01 A20 0.01 A22 0.01 A21 0.01 A24 0.05 A15 0.01 A14 0.01A16 0.01 A17 0.01 A18 0.01 A11 0.01 A9 0.01 A10 0.01A12 0.01 A25 0.04 A26 0.04 A31 0.01 A30 0.01 A29 0.01 A28 0.01 A27 0.01 A37 0.03 A36 0.01 A33 0.02 A32 0.02 A38 0.02 A39 0.01 A40 0.01 B1 0.02 A35 0.01 A34 0.01 A3 0.01A8 0.01 A13 0.01 A19 0.01 A23 0.01 NODE 2.01 164.76EL NODE 2.02164.64EL Q100=0.14cfs HYDROLOGY EXHIBIT: EXISTING DRAINAGE AREA MAP DRAINAGE AREA (DA) BOUNDARY DRAINAGE SUB-AREA BOUNDARY PROPERTY LINE CENTERLINE DA DESIGNATION AREA SIZE (ACRES) FLOW LINE W/ FLOW DIRECTION HYDROLOGIC SOIL GROUP LEGEND: # # LEGOLAND DRIVING SCHOOL 1 LEGOLAND DRIVE CARLSBAD, CA 92008 MERLIN ENTERTAINMENTS GROUP 1 LEGOLAND DRIVE CARLSBAD, CA 92008 CONTACT: TOM STORER TEL: (858) 334-8938 PREPARED FOR: COMMERCIAL DEVELOPMENT RESOURCES 695 TOWN CENTER DRIVE, SUITE 110 COSTA MESA, CA 92626 CONTACT: HANNAH LANCASTER, PE TEL: (949) 610-8997 PREPARED BY: X H.M . L . HYDROLOGY CALCULATION SUMMARY PROJECT:Legoland Driving School (Using San Diego County Hydrology Manual and AES)LOCATION:Carlsbad, CA DATE:03/11/2024 Constant Data: (SF) (AC) (%)SF (%)(SF)(AC) EXIST 3,067 0.070 14%19,479 0.447 86%22,546 0.518 PROP 2,540 0.058 11%20,006 0.459 89%22,546 0.518 EXISTING CONDITION: Data Input:Output/Results: FL Slope APERV AIMP ID (sf) (ac) Up Down (ft) (ft/ft) (sf) (%)t (min)Qsub (cfs) Qpeak (cfs) A 724 0.017 1.01 →1.02 initial subarea 164.41 162.17 30 0.0754 --- ---General Commercial 5.00 0.09 (0.09) A2 456 0.010 1.03 →1.03 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (0.15) A3 90 0.002 1.04 →1.04 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.16) A4 164 0.004 1.05 →1.05 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.18) A5 183 0.004 1.06 →1.06 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.20) A6 174 0.004 1.07 →1.07 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.22) A7 949 0.022 1.08 →1.08 add subarea --- --- --- --- --- ---General Commercial 5.00 0.12 (0.35) A8 90 0.002 1.09 →1.09 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.36) A9 157 0.004 1.10 →1.10 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.38) A10 193 0.004 1.11 →1.11 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.40) A11 173 0.004 1.12 →1.12 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.42) A12 376 0.009 1.13 →1.13 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (0.47) A13 89 0.002 1.14 →1.14 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.48) A14 162 0.004 1.15 →1.15 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.50) A15 195 0.004 1.16 →1.16 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.53) A16 173 0.004 1.17 →1.17 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.55) A17 393 0.009 1.18 →1.18 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (0.60) A18 492 0.011 1.19 →1.19 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 (0.66) A19 90 0.002 1.20 →1.20 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.67) A20 166 0.004 1.21 →1.21 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.69) A21 190 0.004 1.22 →1.22 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.71) A22 173 0.004 1.23 →1.23 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.73) A23 475 0.011 1.24 →1.24 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 (0.79) A24 2,073 0.048 1.25 →1.25 add subarea --- --- --- --- --- ---General Commercial 5.00 0.26 (1.06) A25 1,773 0.041 1.26 →1.26 add subarea --- --- --- --- --- ---General Commercial 5.00 0.22 (1.28) A26 1,919 0.044 1.27 →1.27 add subarea --- --- --- --- --- ---General Commercial 5.00 0.24 (1.52) A27 521 0.012 1.28 →1.28 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (1.59) A28 558 0.013 1.29 →1.29 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (1.66) A29 554 0.013 1.30 →1.30 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (1.73) A30 556 0.013 1.31 →1.31 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (1.80) A31 628 0.014 1.32 →1.32 add subarea --- --- --- --- --- ---General Commercial 5.00 0.08 (1.88) A32 1,083 0.025 1.33 →1.33 add subarea --- --- --- --- --- ---General Commercial 5.00 0.14 (2.02) A33 1,083 0.025 1.34 →1.34 add subarea --- --- --- --- --- ---General Commercial 5.00 0.14 (2.15) A34 540 0.012 1.35 →1.35 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (2.22) A35 582 0.013 1.36 →1.36 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (2.29) A36 548 0.013 1.37 →1.37 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (2.36) A37 1,176 0.027 1.38 →1.38 add subarea --- --- --- --- --- ---General Commercial 5.00 0.15 (2.51) A38 1,036 0.024 1.39 →1.39 add subarea --- --- --- --- --- ---General Commercial 5.00 0.13 (2.64) A39 218 0.005 1.40 →1.40 add subarea --- --- --- --- --- ---General Commercial 5.00 0.03 (2.66) A40 463 0.011 1.41 →1.41 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 2.72 B1 1,080 0.025 2.01 →2.02 initial subarea 164.76 164.64 41 0.003 --- ---General Commercial 5.00 0.14 0.14 TOTAL 22,719 0.522 0 100% 5.00 2.86 Storm Event (yr)100 PERVIOUS IMPERVIOUS TOTAL 100-year storm 24-hr Precipitation (in)4.50 CHECK: P6/P24 = [46%-65%]58% Hydrologic Soil Group B Drainage Area Nodes Action Elevation Land Use Designation* 6-hr Precipitation (in)2.60 * The runoff coefficient (C-value) for each subarea is determined by selecting the "Land Use" classification corresponding to the calculated percentage of impervious cover. The C- values with corresponding "Land Use" and impervious area ratios used are per Table 3.1 of SDCHM, which is included on the next page. ____________________________________________________________________________ **************************************************************************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT 2003,1985,1981 HYDROLOGY MANUAL (c) Copyright 1982-2016 Advanced Engineering Software (aes) Ver. 23.0 Release Date: 07/01/2016 License ID 1631 Analysis prepared by: Commercial Development Resources 695 Town Center Drive, Suite 110 Costa Mesa, CA 92626 ---------------------------------------------------------------------------- FILE NAME: 23037EX.DAT TIME/DATE OF STUDY: 14:33 03/11/2024 ---------------------------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ---------------------------------------------------------------------------- 2003 SAN DIEGO MANUAL CRITERIA USER SPECIFIED STORM EVENT(YEAR) = 100.00 6-HOUR DURATION PRECIPITATION (INCHES) = 2.600 SPECIFIED MINIMUM PIPE SIZE(INCH) = 4.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 SAN DIEGO HYDROLOGY MANUAL "C"-VALUES USED FOR RATIONAL METHOD NOTE: USE MODIFIED RATIONAL METHOD PROCEDURES FOR CONFLUENCE ANALYSIS *USER-DEFINED STREET-SECTIONS FOR COUPLED PIPEFLOW AND STREETFLOW MODEL* HALF- CROWN TO STREET-CROSSFALL: CURB GUTTER-GEOMETRIES: MANNING WIDTH CROSSFALL IN- / OUT-/PARK- HEIGHT WIDTH LIP HIKE FACTOR NO. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (n) === ===== ========= ================= ====== ===== ====== ===== ======= 1 30.0 20.0 0.018/0.018/0.020 0.67 2.00 0.0312 0.167 0.0150 GLOBAL STREET FLOW-DEPTH CONSTRAINTS: 1. Relative Flow-Depth = 0.00 FEET as (Maximum Allowable Street Flow Depth) - (Top-of-Curb) 2. (Depth)*(Velocity) Constraint = 6.0 (FT*FT/S) *SIZE PIPE WITH A FLOW CAPACITY GREATER THAN OR EQUAL TO THE UPSTREAM TRIBUTARY PIPE.* **************************************************************************** FLOW PROCESS FROM NODE 1.01 TO NODE 1.02 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ============================================================================ GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 INITIAL SUBAREA FLOW-LENGTH(FEET) = 29.72 UPSTREAM ELEVATION(FEET) = 164.41 DOWNSTREAM ELEVATION(FEET) = 162.17 ELEVATION DIFFERENCE(FEET) = 2.24 SUBAREA OVERLAND TIME OF FLOW(MIN.) = 1.502 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. SUBAREA RUNOFF(CFS) = 0.09 TOTAL AREA(ACRES) = 0.02 TOTAL RUNOFF(CFS) = 0.09 **************************************************************************** FLOW PROCESS FROM NODE 1.03 TO NODE 1.03 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.15 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.04 TO NODE 1.04 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.16 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.05 TO NODE 1.05 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.18 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.06 TO NODE 1.06 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.20 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.07 TO NODE 1.07 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.22 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.08 TO NODE 1.08 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.12 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.35 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.09 TO NODE 1.09 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.36 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.10 TO NODE 1.10 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.38 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.11 TO NODE 1.11 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.40 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.12 TO NODE 1.12 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.42 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.13 TO NODE 1.13 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.47 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.14 TO NODE 1.14 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.48 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.15 TO NODE 1.15 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.50 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.16 TO NODE 1.16 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.53 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.17 TO NODE 1.17 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.55 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.18 TO NODE 1.18 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.60 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.19 TO NODE 1.19 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.66 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.20 TO NODE 1.20 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.67 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.21 TO NODE 1.21 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.69 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.22 TO NODE 1.22 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.71 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.23 TO NODE 1.23 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.73 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.24 TO NODE 1.24 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.79 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.25 TO NODE 1.25 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.05 SUBAREA RUNOFF(CFS) = 0.26 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.06 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.26 TO NODE 1.26 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.04 SUBAREA RUNOFF(CFS) = 0.22 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.28 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.27 TO NODE 1.27 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.04 SUBAREA RUNOFF(CFS) = 0.24 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.52 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.28 TO NODE 1.28 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.59 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.29 TO NODE 1.29 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.66 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.30 TO NODE 1.30 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.73 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.31 TO NODE 1.31 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.80 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.32 TO NODE 1.32 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.08 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.88 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.33 TO NODE 1.33 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.03 SUBAREA RUNOFF(CFS) = 0.14 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.02 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.34 TO NODE 1.34 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.03 SUBAREA RUNOFF(CFS) = 0.14 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.15 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.35 TO NODE 1.35 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.22 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.36 TO NODE 1.36 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.29 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.37 TO NODE 1.37 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.36 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.38 TO NODE 1.38 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.03 SUBAREA RUNOFF(CFS) = 0.15 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.51 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.39 TO NODE 1.39 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.13 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.64 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.40 TO NODE 1.40 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.03 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.67 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 1.41 TO NODE 1.41 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.73 TC(MIN.) = 1.50 **************************************************************************** FLOW PROCESS FROM NODE 2.01 TO NODE 2.02 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ============================================================================ GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 INITIAL SUBAREA FLOW-LENGTH(FEET) = 41.00 UPSTREAM ELEVATION(FEET) = 164.76 DOWNSTREAM ELEVATION(FEET) = 164.64 ELEVATION DIFFERENCE(FEET) = 0.12 SUBAREA OVERLAND TIME OF FLOW(MIN.) = 4.356 WARNING: THE MINIMUM OVERLAND FLOW SLOPE, 0.5%, IS USED IN Tc CALCULATION! 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. SUBAREA RUNOFF(CFS) = 0.14 TOTAL AREA(ACRES) = 0.03 TOTAL RUNOFF(CFS) = 0.14 ============================================================================ END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 0.0 TC(MIN.) = 4.36 PEAK FLOW RATE(CFS) = 0.14 ============================================================================ ============================================================================ END OF RATIONAL METHOD ANALYSIS   Hydrology Study LEGOLAND California – Driving School ATTACHMENT 3 Proposed Condition Map & Hydrology Calculations 165 166 167 1 6 5 1 6 6 1 6 5 167 167 1 6 5 160 161 162 1 6 7 166 L = 5 2 ' L= 7 4 ' NODE 1.36165.41TG162.60 INV Q100=0.07cfs NODE 1.04 165.70TG162.17INV Q100=0.04cfs NODE 1.45 165.76TG 162.18INVQ100=0.06cfsQ100=0.09cfs NODE 1.38 165.54TG 162.28INVQ100=0.06cfs 7ODE 1.48164.50TG 161.92INV Q100=0.01cfs NODE 1.54 165.10TG 162.10 8" INV(152.46 24" CMP-INV)Q100=0.07cfs SQ100=0.32cfs NODE 1.53a165.15TG 162.68INV Q100=0.05cfs NODE 1.43 165.75TG 161.60 8" INV-IN(153.71 TOP-24" CMP)(151.71 24" CMP INV-OUT) Q100=0.07cfs SQ100=0.79cfs NODE 1.27a162.74INV Q100=0.04cfs NODE 1.16 165.13TG162.63INV Q100=0.03cfs EX 24" CMP STORM DRAIN TO REMAIN EX 24" CMP STORM DRAIN TO REMAIN NODE 1.26165.86TG 162.91INV Q100=0.10cfs NODE 1.47a161.91INV Q100=0.04cfs NODE 2.01165.13EL NODE 2.02 163.65EL Q100=0.18cfs NODE1.10165.56TG162.99INV Q100=0.04cfs NODE 1.15165.31TG162.81INV Q100=0.24cfs NODE1.13 165.34TG162.84INVQ100=0.10cfs MAINTENANCE/WASHWATERDRAIN.DOES NOT CONTRIBUTETO STORMWATER RUNOFF MAINTENANCE/WASHWATERDRAIN.DOES NOT CONTRIBUTE TO STORMWATER RUNOFF NODE 1.02 165.41TG 162.35INVQ100=0.12cfs NODE 1.01 166.18EL NODE 1.37165.25TG162.44INV Q100=0.12cfs Q100=0.19cfs NODE1.29 165.35TG 162.79INVQ100=0.01cfs NODE1.30165.58TG 162.65INV Q100=0.01cfs NODE1.31162.68INV Q100=0.01cfs NODE1.33 162.60INV Q100=0.01cfs NODE1.32 165.56TG162.51INV Q100=0.09cfs Q100=0.14cfs NODE1.34 165.76TG 162.47INVQ100=0.01cfs NODE1.35162.46INV Q100=0.04cfs NODE 1.44 165.97TG 162.40INVQ100=0.03cfs NODE1.18162.97 INV Q100=0.02cfs NODE 1.25a 162.89INVQ100=0.04cfs NODE 1.24 163.01INV Q100=0.04cfs NODE 1.40a 165.90TG162.06INV Q100=0.03cfs Q100=0.07cfs NODE 1.46a 165.91TG162.06INV Q100=0.04cfs NODE 1.52 164.77TG162.10INVQ100=0.05cfs NODE 1.49a165.63TG161.82INV Q100=0.05cfs NODE 1.42a 162.65INVQ100=0.04cfs Q100=0.57cfs NODE 1.50 162.55INV Q100=0.07cfs NODE 1.51165.35TG 162.45INV Q100=0.08cfs NODE1.11 165.20TG162.70INV Q100=0.07cfs NODE 1.39 162.16INVQ100=0.04cfs NODE 1.03a165.61TG 162.66INV Q100=0.02cfs NODE 1.03b 165.46TG162.49INV Q100=0.02cfs Q100=0.04cfs NODE 1.09a165.57TG162.15INV Q100=0.01cfsQ100=0.04cfs NODE 1.08 165.68TG162.35INV Q100=0.01cfs Q100=0.03cfs NODE 1.07 165.47TG 162.49INVQ100=0.01cfs Q100=0.02cfs NODE 1.06 165.36TG 162.86INVQ100=0.01cfs NODE 1.05a 165.59TG162.20INV Q100=0.01cfsNODE1.28 165.46TG162.87INV Q100=0.02cfs NODE1.12 165.49TG162.49INV Q100=0.01cfs NODE1.14a 165.39TG 162.63INVQ100=0.16cfs Q100=0.26cfs A32 0.01 A30 0.01 A34 0.01 A35 0.01 A44 0.01 A1 0.02 A49 0.01 A53 0.01 A46 0.01 A47 0.01 A41 0.01 A36 0.02 A17 0.01 A26 0.01 A24 0.01 A23 0.01 A20 0.01 B2 0.01 A13 0.02 B1 0.04 A15 0.04 A4 0.01 A51 0.01 A52 0.01 A48 0.01 A50 0.02 A42 0.01 A25 0.02 A16 0.01 A33 0.01 A14 0.03 A38 0.01 A29 0.01 A28 0.01 A43 0.01 A45 0.01 A31 0.02 A37 0.01 A27 0.01A11 0.01 A39 0.01 A2 0.01 A3 0.01 A5 0.01 A9 0.01 A7 0.01 A6 0.01 A8 0.01 A10 0.01 A10 0.01 A12 0.01 A18 0.01 NODE1.17163.09 INV Q100=0.07cfs Project Site: Q100=2.86cfs NODE 1.23 162.33 8" INV (150.74 24" CMP-INV)Q100=0.24cfsSQ100=0.58cfs A19 0.01 NODE1.19162.29 INVQ100=0.04cfs NODE1.20 162.79 INVQ100=0.05cfs NODE1.21 162.62 INVQ100=0.09cfs NODE1.22 162.52 INVQ100=0.04cfs A21 0.02 A22 0.01 A40 0.01 NODE 1.41a 161.90INVQ100=0.02cfs HYDROLOGY EXHIBIT: PROPOSED DRAINAGE AREA MAP DRAINAGE AREA (DA) BOUNDARY DRAINAGE SUB-AREA BOUNDARY PROPERTY LINE CENTERLINE DA DESIGNATION AREA SIZE (ACRES) FLOW LINE STORM DRAIN LINE LEGEND: # # LEGOLAND DRIVING SCHOOL 1 LEGOLAND DRIVE CARLSBAD, CA 92008 MERLIN ENTERTAINMENTS GROUP 1 LEGOLAND DRIVE CARLSBAD, CA 92008 CONTACT: TOM STORER TEL: (858) 334-8938 PREPARED FOR: COMMERCIAL DEVELOPMENT RESOURCES 695 TOWN CENTER DRIVE, SUITE 110 COSTA MESA, CA 92626 CONTACT: HANNAH LANCASTER, PE TEL: (949) 610-8997 PREPARED BY: L.D . R . HYDROLOGY CALCULATION SUMMARY PROJECT:Legoland Driving School (Using San Diego County Hydrology Manual and AES)LOCATION:Carlsbad, CA DATE:03/11/2024 Constant Data: (SF) (AC) (%)SF (%)(SF)(AC) EXIST 3,067 0.070 14%19,479 0.447 86%22,546 0.518 PROP 2,540 0.058 11%20,006 0.459 89%22,546 0.518 PROPOSED CONDITION: Data Input:Output/Results: FL Slope APERV AIMP ID (sf) (ac) Up Down (ft) (ft/ft) (sf) (%)t (min)Qsub (cfs) Qpeak (cfs) A1 962 0.022 1.01 →1.02 initial subarea 166.18 165.41 52 0.015 --- ---General Commercial 5.00 0.12 (0.12) A2 118 0.003 1.03 →1.03 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.14) A3 110 0.003 1.03 →1.03 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.15) A4 309 0.007 1.04 →1.04 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (0.19) A5 44 0.001 1.05 →1.05 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.20) A6 49 0.001 1.06 →1.06 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.20) A7 50 0.001 1.07 →1.07 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.21) A8 28 0.001 1.08 →1.08 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.21) A9 48 0.001 1.09 →1.09 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.22) A10 291 0.007 1.10 →1.10 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (0.26) A11 573 0.013 1.11 →1.11 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (0.33) A12 75 0.002 1.12 →1.12 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (0.34) A13 779 0.018 1.13 →1.13 add subarea --- --- --- --- --- ---General Commercial 5.00 0.10 (0.44) A14 1,375 0.032 1.14 →1.14 add subarea --- --- --- --- --- ---General Commercial 5.00 0.16 (0.60) A15 1,867 0.043 1.15 →1.15 add subarea --- --- --- --- --- ---General Commercial 5.00 0.24 (0.84) A16 283 0.006 1.16 →1.16 add subarea --- --- --- --- --- ---General Commercial 5.00 0.03 (0.87) A17 533 0.012 1.17 →1.17 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (0.94) A18 115 0.003 1.18 →1.18 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (0.95) A19 365 0.008 1.19 →1.19 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.00) A20 445 0.010 1.20 →1.20 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (1.05) A21 740 0.017 1.21 →1.21 add subarea --- --- --- --- --- ---General Commercial 5.00 0.09 (1.15) A22 308 0.007 1.22 →1.22 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.18) A23 298 0.007 1.24 →1.24 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.22) A24 301 0.007 1.25 →1.25 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.26) A25 824 0.019 1.26 →1.26 add subarea --- --- --- --- --- ---General Commercial 5.00 0.10 (1.36) A26 290 0.007 1.27 →1.27 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.40) A27 192 0.004 1.28 →1.28 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (1.42) A28 10 0.000 1.29 →1.29 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (1.43) A29 101 0.002 1.30 →1.30 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (1.44) A30 82 0.002 1.31 →1.31 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (1.46) A31 690 0.016 1.32 →1.32 add subarea --- --- --- --- --- ---General Commercial 5.00 0.09 (1.54) A32 82 0.002 1.33 →1.33 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (1.55) A33 87 0.002 1.34 →1.34 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (1.56) A34 311 0.007 1.35 →1.35 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.60) A35 512 0.012 1.36 →1.36 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (1.67) A36 921 0.021 1.37 →1.37 add subarea --- --- --- --- --- ---General Commercial 5.00 0.12 (1.78) A37 458 0.011 1.38 →1.38 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 (1.84) A38 329 0.008 1.39 →1.39 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.89) A39 260 0.006 1.40 →1.40 add subarea --- --- --- --- --- ---General Commercial 5.00 0.03 (1.92) A40 127 0.003 1.41 →1.41 add subarea --- --- --- --- --- ---General Commercial 5.00 0.02 (1.93) A41 323 0.007 1.42 →1.42 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (1.97) A42 583 0.013 1.43 →1.43 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (2.04) A43 244 0.006 1.44 →1.44 add subarea --- --- --- --- --- ---General Commercial 5.00 0.03 (2.08) A44 474 0.011 1.45 →1.45 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 (2.14) A45 335 0.008 1.46 →1.46 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (2.18) A46 301 0.007 1.47 →1.47 add subarea --- --- --- --- --- ---General Commercial 5.00 0.04 (2.22) A47 84 0.002 1.48 →1.48 add subarea --- --- --- --- --- ---General Commercial 5.00 0.01 (2.23) A48 443 0.010 1.49 →1.49 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (2.29) A49 506 0.012 1.50 →1.50 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 (2.35) A50 648 0.015 1.51 →1.51 add subarea --- --- --- --- --- ---General Commercial 5.00 0.08 (2.43) A51 375 0.009 1.52 →1.52 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (2.48) A52 424 0.010 1.53 →1.53 add subarea --- --- --- --- --- ---General Commercial 5.00 0.05 (2.54) A53 562 0.013 1.54 →1.54 add subarea --- --- --- --- --- ---General Commercial 5.00 0.07 2.62 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- B1 1,577 0.036 2.01 →2.02 initial subarea 165.13 164.63 74 0.0067 --- ---General Commercial 5.00 0.20 (0.20) --- --- --- 2.02 →3.08 pipe flow --- --- --- --- --- ---General Commercial 5.32 --- (0.20) B2 501 0.011 2.03 →2.03 add subarea --- --- --- --- --- ---General Commercial 5.00 0.06 0.26 --- --- --- 2.03 →3.08 pipe flow --- --- --- --- --- ---General Commercial 5.32 --- 0.26 TOTAL 22,718 0.522 3,272 85% Impervious 5.00 2.88 0 Storm Event (yr)100 PERVIOUS IMPERVIOUS TOTAL 24-hr Precipitation (in)4.50 CHECK: P6/P 24 = [46%-65%]58% Hydrologic Soil Group B 6-hr Precipitation (in)2.60 Drainage Area Nodes Action Elevation Land Use Designation* 100-year storm * The runoff coefficient (C-value) for each subarea is determined by selecting the "Land Use" classification corresponding to the calculated percentage of impervious cover. The C- values with corresponding "Land Use" and impervious area ratios used are per Table 3.1 of SDCHM, which is included on the next page. ____________________________________________________________________________ **************************************************************************** RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM PACKAGE Reference: SAN DIEGO COUNTY FLOOD CONTROL DISTRICT 2003,1985,1981 HYDROLOGY MANUAL (c) Copyright 1982-2016 Advanced Engineering Software (aes) Ver. 23.0 Release Date: 07/01/2016 License ID 1631 Analysis prepared by: Commercial Development Resources 695 Town Center Drive, Suite 110 Costa Mesa, CA 92626 ---------------------------------------------------------------------------- FILE NAME: 23037PR.DAT TIME/DATE OF STUDY: 14:30 03/11/2024 ---------------------------------------------------------------------------- USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION: ---------------------------------------------------------------------------- 2003 SAN DIEGO MANUAL CRITERIA USER SPECIFIED STORM EVENT(YEAR) = 100.00 6-HOUR DURATION PRECIPITATION (INCHES) = 2.600 SPECIFIED MINIMUM PIPE SIZE(INCH) = 4.00 SPECIFIED PERCENT OF GRADIENTS(DECIMAL) TO USE FOR FRICTION SLOPE = 0.95 SAN DIEGO HYDROLOGY MANUAL "C"-VALUES USED FOR RATIONAL METHOD NOTE: USE MODIFIED RATIONAL METHOD PROCEDURES FOR CONFLUENCE ANALYSIS *USER-DEFINED STREET-SECTIONS FOR COUPLED PIPEFLOW AND STREETFLOW MODEL* HALF- CROWN TO STREET-CROSSFALL: CURB GUTTER-GEOMETRIES: MANNING WIDTH CROSSFALL IN- / OUT-/PARK- HEIGHT WIDTH LIP HIKE FACTOR NO. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (n) === ===== ========= ================= ====== ===== ====== ===== ======= 1 30.0 20.0 0.018/0.018/0.020 0.67 2.00 0.0312 0.167 0.0150 GLOBAL STREET FLOW-DEPTH CONSTRAINTS: 1. Relative Flow-Depth = 0.00 FEET as (Maximum Allowable Street Flow Depth) - (Top-of-Curb) 2. (Depth)*(Velocity) Constraint = 6.0 (FT*FT/S) *SIZE PIPE WITH A FLOW CAPACITY GREATER THAN OR EQUAL TO THE UPSTREAM TRIBUTARY PIPE.* **************************************************************************** FLOW PROCESS FROM NODE 1.01 TO NODE 1.02 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ============================================================================ GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 INITIAL SUBAREA FLOW-LENGTH(FEET) = 52.00 UPSTREAM ELEVATION(FEET) = 166.18 DOWNSTREAM ELEVATION(FEET) = 165.41 ELEVATION DIFFERENCE(FEET) = 0.77 SUBAREA OVERLAND TIME OF FLOW(MIN.) = 3.416 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. SUBAREA RUNOFF(CFS) = 0.12 TOTAL AREA(ACRES) = 0.02 TOTAL RUNOFF(CFS) = 0.12 **************************************************************************** FLOW PROCESS FROM NODE 1.03 TO NODE 1.03 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.14 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.03 TO NODE 1.03 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.15 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.04 TO NODE 1.04 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.19 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.05 TO NODE 1.05 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.20 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.06 TO NODE 1.06 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.20 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.07 TO NODE 1.07 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.21 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.08 TO NODE 1.08 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.21 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.09 TO NODE 1.09 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.22 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.10 TO NODE 1.10 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.26 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.11 TO NODE 1.11 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.33 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.12 TO NODE 1.12 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.34 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.13 TO NODE 1.13 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.10 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.44 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.14 TO NODE 1.14 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.03 SUBAREA RUNOFF(CFS) = 0.16 TOTAL AREA(ACRES) = 0.1 TOTAL RUNOFF(CFS) = 0.60 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.15 TO NODE 1.15 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.04 SUBAREA RUNOFF(CFS) = 0.24 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 0.84 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.16 TO NODE 1.16 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.03 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 0.87 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.17 TO NODE 1.17 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 0.94 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.18 TO NODE 1.18 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 0.95 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.19 TO NODE 1.19 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.00 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.20 TO NODE 1.20 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.05 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.21 TO NODE 1.21 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.09 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.15 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.22 TO NODE 1.22 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.18 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.23 TO NODE 1.23 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.22 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.24 TO NODE 1.24 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.26 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.25 TO NODE 1.25 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.10 TOTAL AREA(ACRES) = 0.2 TOTAL RUNOFF(CFS) = 1.36 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.26 TO NODE 1.26 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.40 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.27 TO NODE 1.27 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.42 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.28 TO NODE 1.28 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.43 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.29 TO NODE 1.29 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.44 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.30 TO NODE 1.30 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.45 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.31 TO NODE 1.31 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.09 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.54 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.32 TO NODE 1.32 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.55 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.33 TO NODE 1.33 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.56 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.34 TO NODE 1.34 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.60 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.35 TO NODE 1.35 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.67 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.36 TO NODE 1.36 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.02 SUBAREA RUNOFF(CFS) = 0.12 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.78 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.37 TO NODE 1.37 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.84 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.38 TO NODE 1.38 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.3 TOTAL RUNOFF(CFS) = 1.89 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.39 TO NODE 1.39 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.03 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 1.92 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.40 TO NODE 1.40 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.02 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 1.93 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.41 TO NODE 1.41 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 1.97 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.42 TO NODE 1.42 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.04 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.43 TO NODE 1.43 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.03 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.08 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.44 TO NODE 1.44 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.14 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.45 TO NODE 1.45 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.18 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.46 TO NODE 1.46 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.04 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.22 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.47 TO NODE 1.47 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.00 SUBAREA RUNOFF(CFS) = 0.01 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.23 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.48 TO NODE 1.48 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.29 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.49 TO NODE 1.49 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.35 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.50 TO NODE 1.50 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.08 TOTAL AREA(ACRES) = 0.4 TOTAL RUNOFF(CFS) = 2.43 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.51 TO NODE 1.51 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.48 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.52 TO NODE 1.52 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.05 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.54 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 1.53 TO NODE 1.53 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.07 TOTAL AREA(ACRES) = 0.5 TOTAL RUNOFF(CFS) = 2.61 TC(MIN.) = 3.42 **************************************************************************** FLOW PROCESS FROM NODE 2.01 TO NODE 2.02 IS CODE = 21 ---------------------------------------------------------------------------- >>>>>RATIONAL METHOD INITIAL SUBAREA ANALYSIS<<<<< ============================================================================ GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 INITIAL SUBAREA FLOW-LENGTH(FEET) = 74.00 UPSTREAM ELEVATION(FEET) = 165.13 DOWNSTREAM ELEVATION(FEET) = 163.65 ELEVATION DIFFERENCE(FEET) = 1.48 SUBAREA OVERLAND TIME OF FLOW(MIN.) = 3.687 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. SUBAREA RUNOFF(CFS) = 0.20 TOTAL AREA(ACRES) = 0.04 TOTAL RUNOFF(CFS) = 0.20 **************************************************************************** FLOW PROCESS FROM NODE 2.03 TO NODE 2.03 IS CODE = 81 ---------------------------------------------------------------------------- >>>>>ADDITION OF SUBAREA TO MAINLINE PEAK FLOW<<<<< ============================================================================ 100 YEAR RAINFALL INTENSITY(INCH/HOUR) = 6.850 NOTE: RAINFALL INTENSITY IS BASED ON Tc = 5-MINUTE. GENERAL COMMERCIAL RUNOFF COEFFICIENT = .8000 SOIL CLASSIFICATION IS "B" S.C.S. CURVE NUMBER (AMC II) = 92 AREA-AVERAGE RUNOFF COEFFICIENT = 0.8000 SUBAREA AREA(ACRES) = 0.01 SUBAREA RUNOFF(CFS) = 0.06 TOTAL AREA(ACRES) = 0.0 TOTAL RUNOFF(CFS) = 0.26 TC(MIN.) = 3.69 ============================================================================ END OF STUDY SUMMARY: TOTAL AREA(ACRES) = 0.0 TC(MIN.) = 3.69 PEAK FLOW RATE(CFS) = 0.26 ============================================================================ ============================================================================ END OF RATIONAL METHOD ANALYSIS   Hydrology Study LEGOLAND California – Driving School ATTACHMENT 4 Storm Drain Sizing Hydraulic Calculations A. MIN. SD PIPE CALCULATIONS PROJECT:Legoland Driving School *See Proposed Drainage Map for Node locations.LOCATION:Carlsbad, CA DATE:03/11/2024 For full flow in a circular storm drain:For minimum circular pipe size required: Qf = 1.49*(n-1)*(Af)*(Rf 2/3)*(S0 1/2)Dr = [2.16*(n)*(Q)/(S0 1/2)]3/8 Where Qf = full flow rate (cfs)Where Dr = minimum size pipe required (ft) n = Manning's roughness factor n = Manning's roughness factor Af = (π*D2/4) = flow area at full flow (ft2)Q = flow rate (cfs) Rf = (D/4) = hydraulic radius at full flow (ft)S0 = longitudinal slope (ft/ft) S0 = longitudinal slope (ft/ft) SD DATA TABLE:Avg. Manning Roughness Coefficients for Closed Conduits: SIZE D (ft)Af (ft2)Rf (ft)Qf *n/(S0)1/2 PVC HDPE RCP CONC 4" PIPE 0.33 0.087 0.083 0.025 6" PIPE 0.50 0.196 0.125 0.073 8" PIPE 0.67 0.349 0.167 0.158 10" PIPE 0.83 0.545 0.208 0.286 12" PIPE 1.00 0.785 0.250 0.464 24" PIPE 2.00 3.142 0.500 2.949 PROPOSED STORM DRAIN LATERALS: Node Node S0 (ft/ft) Q100 (cfs)Material n Dr (ft) dr (in) Qf (cfs) 1.02 1.03c 0.010 0.12 HDPE 0.012 0.27 3.27 0.21 YES 172% 1.03a 1.03b 0.006 0.02 HDPE 0.012 0.15 1.84 0.16 YES 801% 1.03b 1.03c 0.081 0.04 HDPE 0.012 0.12 1.46 0.59 YES 1471% 1.03c 1.05b 0.081 0.16 HDPE 0.012 0.20 2.46 0.59 YES 368% 1.05a 1.05b 0.020 0.17 HDPE 0.012 0.27 3.27 0.29 YES 172% 1.06 1.07 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.07 1.08 0.010 0.02 HDPE 0.012 0.14 1.67 0.21 YES 1034% 1.08 1.09 0.010 0.03 HDPE 0.012 0.16 1.94 0.21 YES 689% 1.09a 1.09b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.10 1.11b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.11a 1.11b 0.070 0.03 HDPE 0.012 0.11 1.35 0.55 YES 1823% 1.12 1.14b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.13 1.14a 0.010 0.10 HDPE 0.012 0.25 3.05 0.21 YES 207% 1.14b 1.14b 0.010 0.26 HDPE 0.012 0.36 4.36 0.61 YES 234% 1.15a 1.15b 0.010 0.24 HDPE 0.012 0.35 4.24 0.61 YES 254% 1.16a 1.16b 0.010 0.03 HDPE 0.012 0.16 1.94 0.21 YES 689% 1.17 1.18b 0.010 0.07 HDPE 0.012 0.22 2.67 0.21 YES 295% 1.18a 1.18b 0.010 0.02 HDPE 0.012 0.14 1.67 0.21 YES 1034% 1.18b 1.19b 0.010 0.09 HDPE 0.012 0.24 2.93 0.21 YES 230% 1.19a 1.19b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.19b 1.20b 0.010 0.13 HDPE 0.012 0.28 3.37 0.21 YES 159% 1.20a 1.20b 0.010 0.05 HDPE 0.012 0.20 2.35 0.21 YES 413% 1.20b 1.21b 0.010 0.18 HDPE 0.012 0.32 3.80 0.21 YES 115% 1.21a 1.21b 0.010 0.09 HDPE 0.012 0.24 2.93 0.21 YES 230% 1.21b 1.22a 0.020 0.27 HDPE 0.012 0.32 3.89 0.29 YES 108% 1.22a 1.22b 0.018 0.27 HDPE 0.012 0.33 3.96 0.28 YES 103% 1.22b 1.24b 0.010 0.18 HDPE 0.012 0.32 3.80 0.21 YES 115% 1.24a 1.24b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.24b 1.25b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.25a 1.25b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.26a 1.26b 0.010 0.10 HDPE 0.012 0.25 3.05 0.21 YES 207% 1.26b 1.27b 0.010 0.18 HDPE 0.012 0.32 3.80 0.21 YES 115% 1.27a 1.27b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.27b 1.23 0.020 0.22 HDPE 0.012 0.30 3.60 0.29 YES 133% 1.28 1.29b 0.010 0.02 HDPE 0.012 0.14 1.67 0.21 YES 1034% 4" PIPE 4" PIPE 0.013 0.014"n" Value 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE CHECK: Qf > Q100 Pipe Material 0.011 0.012 4" PIPE 4" PIPE MIN. PIPE SIZE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 6" PIPE 6" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE Page 1 of 2 1.29a 1.29b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.29b 1.30b 0.010 0.03 HDPE 0.012 0.16 1.94 0.21 YES 689% 1.30a 1.30b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.30b 1.31b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.31a 1.31b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.31b 1.32 0.010 0.05 HDPE 0.012 0.20 2.35 0.21 YES 413% 1.32 1.33b 0.010 0.14 HDPE 0.012 0.29 3.46 0.21 YES 148% 1.33a 1.33b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.33b 1.35c 0.010 0.15 HDPE 0.012 0.30 3.55 0.21 YES 138% 1.34 1.35b 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.35a 1.35b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.35b 1.35c 0.010 0.05 HDPE 0.012 0.20 2.35 0.21 YES 413% 1.35c 1.38c 0.010 0.20 HDPE 0.012 0.33 3.96 0.21 YES 103% 1.36 1.37 0.010 0.07 HDPE 0.012 0.22 2.67 0.21 YES 295% 1.37 1.38b 0.010 0.19 HDPE 0.012 0.32 3.88 0.21 YES 109% 1.38b 1.38c 0.015 0.22 HDPE 0.012 0.32 3.80 0.25 YES 115% 1.38c 1.40b 0.015 0.22 HDPE 0.012 0.32 3.80 0.25 YES 115% 1.39 1.40a 0.010 0.07 HDPE 0.012 0.22 2.67 0.21 YES 295% 1.40a 1.40b 0.010 0.07 HDPE 0.012 0.22 2.67 0.21 YES 295% 1.40b 1.41b 0.020 0.29 HDPE 0.012 0.33 3.99 0.29 YES 101% 1.41a 1.41b 0.010 0.02 HDPE 0.012 0.14 1.67 0.21 YES 1034% 1.41b 1.42b 0.010 0.31 HDPE 0.012 0.39 4.66 0.61 YES 197% 1.42a 1.42b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.42b 1.43 0.020 0.57 HDPE 0.012 0.43 5.14 0.86 YES 151% 1.44 1.45 0.010 0.03 HDPE 0.012 0.16 1.94 0.21 YES 689% 1.45 1.46b 0.010 0.09 HDPE 0.012 0.24 2.93 0.21 YES 230% 1.46a 1.46b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.46b 1.47b 0.010 0.13 HDPE 0.012 0.28 3.37 0.21 YES 159% 1.47a 1.47b 0.010 0.04 HDPE 0.012 0.18 2.16 0.21 YES 517% 1.47b 1.49b 0.010 0.17 HDPE 0.012 0.31 3.72 0.21 YES 122% 1.48 1.49a 0.010 0.01 HDPE 0.012 0.11 1.29 0.21 YES 2067% 1.49a 1.49b 0.010 0.06 HDPE 0.012 0.21 2.52 0.21 YES 345% 1.49b 1.43 0.015 0.23 HDPE 0.012 0.32 3.86 0.25 YES 110% 1.50 1.51 0.010 0.07 HDPE 0.012 0.22 2.67 0.21 YES 295% 1.51 1.53b 0.010 0.15 HDPE 0.012 0.30 3.55 0.21 YES 138% 1.52 1.53b 0.010 0.05 HDPE 0.012 0.20 2.35 0.21 YES 413% 1.53a 1.53b 0.010 0.05 HDPE 0.012 0.20 2.35 0.21 YES 413% 1.53b 1.54 0.010 0.25 HDPE 0.012 0.36 4.30 0.61 YES 244% 4" PIPE 4" PIPE 4" PIPE 6" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 6" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 4" PIPE 6" PIPE 4" PIPE Page 2 of 2 B. INLET SIZING CALCULATIONS PROJECT:Legoland Driving School *See Proposed Drainage Map for Node locations.LOCATION:Carlsbad, CA DATE:12/18/2023 Per Section 2.3.2.2 of SDCHDM (2014) for GRATED INLETS IN SAG: (1) Capacity of grate inlet operating as a weir:(2) Capacity of grate inlet operating as an orifice: Where: Where: Qw = inlet capacity of the grated inlet (cfs) QO = inlet capacity of the grated inlet (cfs) Cw = weir coefficient (constant) =3.33 CO = orifice coefficient (constant) =0.67 Pe = effective grate perimeter length (ft)g = gravitational acceleration (ft/s) =32.2 ft/s d = flow depth approaching inlet (ft) d = flow depth above inlet, i.e. freeboard (ft) CL = clogging factor (constant) =50%Ae = effective (clogged) grate area (ft2) CA = area clogging factor (constant) =50% A = actual opening area of the grate inlet (ft2) (1) WEIR CONDITION (2) ORIFICE CONDITION USE: min[ QW, QO ] Q100 d L = W dia. P Pe Qw A*Ae QO Qinlet (cfs) (ft) (ft) (ft) (ft) (ft) (cfs)(in2)(ft2)(cfs) (cfs) 1.02 0.12 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 337% 1.03a 0.02 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 2020% 1.03b 0.02 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 1429% 1.04 0.04 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 714% 1.05a 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.06 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.07 0.01 0.08 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.12 37.49 0.130 0.20 0.12 YES 1202% 1.08 0.01 0.13 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.22 37.49 0.130 0.25 0.22 YES 2207% 1.09a 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.10 0.04 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 714% 1.11 0.07 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 408% 1.12 0.01 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 4041% 1.13 0.10 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 286% 1.14a 0.16 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 179% 1.15 0.24 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 119% 1.16 0.03 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 1347% 1.19a 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.20 0.24 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 119% 1.23 0.10 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 286% 1.25 0.02 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 2020% 1.26 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.27 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.29 0.10 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 286% 1.31 0.01 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 4041% 1.33 0.07 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 408% 1.34 0.12 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 238% 1.35 0.06 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 476% 1.37 0.03 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 1347% 1.39 0.07 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 408% 1.40 0.03 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 952% 1.41 0.06 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 476% 1.42 0.04 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 1010% 1.44 0.01 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 2857% 1.45 0.05 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 571% 1.46 0.08 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 505% 1.47 0.05 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 571% 1.48 0.05 0.33 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.96 37.49 0.130 0.40 0.40 YES 808% 1.5 0.07 0.17 Catch Basin 9" x 9" 0.75 --- 0 3.00 1.50 0.34 37.49 0.130 0.29 0.29 YES 408% *Open Area (A) per Manufacturer's Catalog Size Make/Model Grate Type A* (sq-in) Equiv. Dia. (in) 4" Dia. NDS #910/917 Flat 5.25 6" Dia. NDS #40/50/60 Flat 9.10 6" Dia. A NDS #80/81/90 Atrium 28.40 8" Dia. NDS #10/20/30 Flat 11.50 [Use LOWER of the two values] Qw = Cw x Pe x d3/2 and Pe = (1 - CL) x P QO = CO x Ae x (2gd)1/2 and Ae = (1 - CA) x A NODE Inlet Type Size No. Sides w/ Curb CHECK: Qi > Q100 Inlet Type Area Drain Area Drain Area Drain Area Drain Page 1 of 2 9" x 9" NDS #980/990 Flat 37.49 10.16 10" Dia. NDS #1040/1050 Flat 21.57 12" Dia. NDS #1240/1250 Flat 46.00 12" x 12" NDS #1210/1211 Flat 50.76 13.54 15" Dia. NDS #1511/1512 Flat 85.60 18" x 18" NDS #1811/1812 Flat 86.31 20.31 24" x 24" NDS #2415 Flat 422.45 23.45 30" x 30" Old Castle #3030 Flat 490.00 30.28 Catch Basin Catch Basin Area Drain Area Drain Catch Basin Area Drain Catch Basin Catch Basin Page 2 of 2 Hydrology Study LEGOLAND California – Driving School ATTACHMENT 5 Water Quality Treatment Letter Hydrology Study LEGOLAND California – Driving School ATTACHMENT 6 Referenced Improvement Plans ( I = -: ___ ;== __ _ I= Iii = -=-- := -.:---=----_ __ ;1-~: ;:_ ~= t =1 ,-=_· :...==- ·,= =ct 1=::r -,:· _c· /. --,~~ __ ,: __ -=--:r:---_= t=--- -=-~----=-:- c== . :·F:;;,;' -~~ -f=~~~ --~~ ~----~ __ -_ -_-:::~t:--:-__::::-__ ::~·. - ---1=~ ·---- _t:;::· i----1=--= -2:_:_,~--~ ·-C ._:.:Jcfc ~""' "· --=--·,= =-"-'·-="c:: -~= ~~~ :::.:_ -----=:= .. :-1-,-. ; ==:.:L.=:::: _ 1·::-...::: 1-:::-_t·;:::- =..:::--=--- ·= :;:;_----- :.:: .. : :::::::·~ ::=::.:.._ ·_· __ --:::::: -_ --:.:.:~ ___ -·== :::::::- .,,, ·-"'"- _- ~~~ +-=+='+cc_=·➔• .,.,=,i=-,,==, --l-='+='+--+=+-=~ . .,-==·-~+-=l:=----.. -c1-1=·:'.:_➔-• . :, --c= . -·=-_- : ___ .:::; ::= :~i: =--~---== . :::;.;_=:=t::-=:::::= ~~-_:----_--,-_:._ -=c- . _--': ·_ -~ I== ::_·-=:, -=-~ .:.,. __ ·s=-,:-::_ -=·-i----=:-: -- -. =:·,.::_:::; ~~' ::':_____;r:::::, ~ =·;. '~ olc :·: -,, --"~"' ,: "),er:::.;::;;-=-- .:;:_ .. ~=~ !'.'S_:: =-r=_;. F·-::-• ~,c; "F=:=" I:= -:= __ : F=i= :...-i---=-:-::=-:·- _, ---· =f~ =. -= -· :c ... -" ::=.::-:::: ~ ==-----=:.=:. --_.., __ -.::__ __ ,:... .. ::::.::.:_··- ,, _: •:=•== _J::~: , ... • 1-.-.. :-= =: _:--=-,. :::;::- ~-:·:... .. ,: ·1-.::=-=---- :_."--:::::-;:::::·:: -:::-,--_ ::...-:::·:-. --,--=----t·::::::; __ "'-= -·-.f=F:--= ~~~lit i~~II: =- F= --••=-_c:·,~,:. --->-----:-_--:!-_ _ ·:;:-::-I:::::::;::.....::.. i-=-- _-.. -=:=:1-=-~--- __ ,,_-:-r:-:: --1--·- =- • -- == t-·::.-::: -~-~t,.;; . ..;,;, '.~ ·_::_::: 1-=---- -__ :~~ --~~.: -, ::,'j~ /1'1 ----------+-=- ·:'"''-·-· ...... _ -:----·:.--:~ 1:-= ----1---- _·::=.-. -· ':"-.-----_ ~~ •As BUILT• ,J rY..#f INSPW't□R DA TE CITY OF CARLSBAD ~ ENGINEERING DEPARTMENT ~ GRADING PLANS FOR: LOTS 18 and 19 of CT 94 09 CJ---1-----+-----------1-----+--+---+------"I CARLSBAD HANCH/1.EGOLAND CARi~ STORI,/ ORAIN PROFILES I i -_;:I==: __ ,_-·-=~:~ .. NOLTE and ASSOCIATES f.c!f=,!~'°--;1---+--+-----------t----+---+---+------'I: AP~ ~ ✓./ 6-:U--17; ~ Engineers / Planners / Surveyors 7-,.,.., _.._ 1/2\ NEW SHEET, REVISED TO CONFORM TO 17-k/J/7 .M.,..., Ci.TY ENGINWV PE 23889 EXPIRES 12/31/97 DATE I-~ ---~=- t-=---: -- -:;:._ "_-:·~:--~-::-:=:-..: SCALE.· HORIZ: 1'=40' VERT.· 1'=8' 54181Clim'YII.URD.,3tffl301i,SANDIIOO,CA.112123{4119)tl&--9392 07/08/97 DATE lN11lAL SOP 96 14 IOWN !;SY: Ill PROJECT NO. IIDRA'MNG Nyi, /4la....-~-~;"J..'::;;.."':.' -:,...,._,, f-D_AT_E~_IN_ITI_AL-+_D_ATE_~IN_ITI_AL__.i CJ;JKDIBY:~ CT 94-09-03 333-2 ·. --,,Jf'."".'; .... ~,~,;,_-.,,~m';.,:s,"!;1,~,~-'-\",'l'al __ ~,""""·""C'_,cc, "'oo:-,=--~;,!!:.,~,.---IS0033s ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL aTY APPROVAL i RY'IJD BY1--=---=--t- CMWD 94-2 11 ... w z 0 z r-----------------------l?t,, ______ _ .• 1?4 r------------=:...:::·----.:;:J;:,,,"'A1°tlc~NgRIU:L~';, EAA:5£~M'i!fl:or------- RANCH MAP 13408 -/7. ?, --: . ..:::-------- --12i ____ _ -------- ~ I I / , I I I 22 -----+------ 162------- 164------ 166-------168 ______ _ 110·------ 172------ 174 ____ _ STORM DRAIN DA TA TABLE UN£ OEL TA/BEARING RADIUS LENGTH REMARKS ,~ 17 N25'25'27"£ 13.51' 24" RCP 18 6117'/f" 45.00' 48.13' 24" RCP 19 N86"42'J7"E 70.58' 24" RCP 20 N89V9'/J"E 228.42 ' 24" PVC 21 28V9'J6" 45.00' 22.12' 24" RCP 22 N89'58'26"W 112.00' 24" RCP NOTES I. ALL LENGTHS SH0"1V ARE MEASURED FROM INSIDE FACE OF STRUCTURE TO INSIDE FACE OF STRUCTURE:. MANHOLE FRAME: ANO CO'IE:R VERIFY RIM £LEVA TION IN FIELD wm; LANDSCAPE SUPERINTc:NOENT PRIOR TD sunNG FINAL RIM ELEVA nON NOT£.· THIS OET.ML APPLIES TO INNER PARK STORM DRAINS ONLY INNER PARK STORM DRAIN CLEANOUTS NO SCALE LINE SHEET --"'.f!!.t:s ·---..::::::~===---- FOR FUTURE GRADES IN THIS f '/ 'ff o,c No ,n-w I GRAPHIC SC,¢£ O •-• _1.,,o•.,250'-'-'JO'--il!!!'!!!!'!j··#'.-.._' a;aa(j,;,O.,' !!'!!!!!'!!!'!!!'!"!91i,Oiii' iiiiiiiiiiiiiiii/20' I N I.. NOL TE and ASSOCIATES ZIS/Rca a.. Engineers / Planners / Surveyors OR"IIIN: ~~ KEIJUIY WU. RD.,SUnt ~. SAN DW',O. CA. 9ll~ (e.9) t7&-iml OAIT• ENCINCER~WORI':: 07/08/97 ,1 ~-~~ ?-/'J-97 JOB NO, ,;· JAM(S R. f4Em~~([)(P. 12-J1-005 DATE: SD0186 I I ( I I I ', ' I I I I ', I ' I ') I I ' ... , ·'.:·: --:.··. '<·' I •i / II ·:\ \ II r· -~~] \ PAD II U E c.22,,_· __ ,_· 1 II l ) r = = = ~~n/\<' \ I/ 117LF12· Pvc = .11 . ·' • ·1~ z• II \:: --- ~-4 !.:.£ I ~·s __ s_· __ ....;._ R-1 JOO. 00' _____ ____:__ ______ ~ I I -!-: I I ~ASsJMP'(ION Of rE.SfONSll?Lf_ o-1~"1 E." N, Of oc.,; 311 200!5 t He.;,.t;S'( J>6Sur-ic. Ri"-SPt>NSl~E-c.i-lAf"'IE-fO!" c.iNJc,E.s IHDl'-'A'f"P ..J11H &-fo 1H1,s PJ<A>AIIJc,. }<a;, II Ei"'-h•v•-, iec.E.<l 4'tdJ& f-X'I'' 9/Jf)/D~ ~t~ ~OWN At.JD C.AL'.DwU-L M)Df.!¾s, "!<Pi,:'> c+1C:SAIBAK£ 171,2., '.>LIITE; 201 5A>/ 1)1~, C-A 'j:Zl'l;';, BUIL T" INS z_-4-,_, DATE fsim7 CITY OF CARLSBAD I SHEETS I ~ ENGINEERING DEPARTMENT 47 GRADING PLANS FOR: LOTS 18 and 19 of CT 94-09 CARLSBAD RANCH/LEGOlAND CARLSBAD -faEfHOt,lf-' (e,,s<!,) '5!4·6t,i2-.FAX, ('to'/7) 1:514 ·Bt,':>':> ~i~ij§~~~~;;;~~~~~ii~2=:====f=='I~~I2~~[:'.&□ ~aa4!(!/1.:q;=;~~~= 8::/J.:fl '=-'=""'-"--'===-~===--=~-1-1-::!!i:'JL , 97 DATE PROJECT NO. DRAWING NO. ENGINEER Of WORI< REVISION DESCRIPTION 94-09-03 333-2Y CMWD 94-201 • "' CCCCTTVV IINNSSPPEECCTTIIOONNSS &&UUTTIILLIITTYY LLOOCCAATTIINNGG U T I L I T Y S U R V E Y O R S , I N C . PPRREEPPAARREEDD BBYY:: March 28, 2023 PPRREEPPAARREEDD FFOORR:: Royce Eklund CDR West 4395 E. Lowell St Suite G I Ontario, CA 91761 I P. (909) 906‐2119 I F.760.739.8034 I airxus.com Legoland One Legoland Dr, Carlsbad, CA 92008 AIRX Project # X230119 CCTV Utility Inspection Project Project X230119_1 3/28/2023 End Date 3/28/2023 Page C-1 Table of Contents Page T-1 3/28/2023ProjectX230119_1 Section Profile .......................................................................................................................................................................................P-1 Section Summary .......................................................................................................................................................................................P-2 Section: 1; MH 2 - MH 1 .......................................................................................................................................................................................1 WinCan .......................................................................................................................................................................................2 Page P-1 Section Profile Nr.UpstreamMH DownstreamMH Date Street Media Label Material TotalLength LengthSurveyed 1 MH 2 MH 1 3/28/2023 One Legoland Dr CorrugatedMetal Pipe 223.70 223.70 1 x Circular 24 = 223.70 Total Length ( 223.70 Length Surveyed ) Total: 1 = 223.70 Total Length ( 223.70 Length Surveyed ) 3/28/2023ProjectX230119_1 Page P-2 Number of sections 1 Total length of sewer network 223.70 ft Inspected length of sewer network 223.70 ft Not inspected length of sewer network 0.00 ft Total abandoned inspections 0 Number of section inspection photos 0 Number of section inspection videos 1 Number of section inspection scans 0 Number of section inclination measurements 0 Pipe SegmentReference Upstream MH MH 2 City Carlsbad Downstream MH MH 1 Street One Legoland Dr Shape Circular 24inch Total Length 223.7 Material Corrugated Metal Pipe Distance PACP Code Observation 1 0.00 AMH Manhole 2 0.00 MWL Water Level, 0% of the vertical dimension 3 168.60 TFA Tap Factory Made Active at 2 o'clock, 12inch dim 4 176.20 TFA Tap Factory Made Active at 12 o'clock, 6inch dim 5 223.70 AMH Manhole Section Summary 3/28/2023ProjectX230119_1 Inspection report Date:Work Order:Pipe Segment Ref.:Weather:Surveyed By:Certificate Number: Year laid:Pre-cleaning:Pipe Joint Length:Direction:Total Length:Length Surveyed: X230119_1 // Page: 1 City:Carlsbad Drainage Area:Upstream MH:MH 2 Street:One Legoland Dr Media Label:Up Rim to Invert:0.0 Location Code:Flow Control:Downstream MH:MH 1 Location Details:Sheet Number:Down Rim to Invert:0.0 Pipe shape:Circular Sewer Use:Total gallons used:0.0 Pipe size:24 "Sewer Category:SEC Joints passed:0 Pipe material:Corrugated Metal Pipe Purpose:Joints failed:0 Lining Method:Owner: Additional Info: 1:1689 Distance Code Observation Counter Photo Grade 0.00 AMH Manhole / MH 1 0.00 MWL Water Level, 0% of the vertical dimension 00:00:00 168.60 TFA Tap Factory Made Active at 2 o'clock, 12inch dim 00:06:42 176.20 TFA Tap Factory Made Active at 12 o'clock, 6inch dim 00:07:16 223.70 AMH Manhole / MH 2 00:09:08 3/28/2023 Phillip Lagos No Pre-Cleaning Upstream 223.7 '223.7 ' QSR QMR SPR MPR OPR SPRI MPRI OPRI 0000 0000 0.0 0.0 0.0 0.0 0.00.0 QOR 0000 MH 1 MH 2 WinCan Notes: Thank you for choosing to use WinCan to carry out your drainage investigation works. The results and views carried in this report are those of the engineer(s) appointed to carry outthe investigation and are considered relevant on the day of the survey. Drain and sewerperformance is known to alter over time, so liability cannot be accepted for differences betweenthe recorded data and the actual data at a time after this report was generated. This survey has been created in accordance with the drainage standard used in the country andlanguage settings for this PC. If a DVD has been supplied with this report, please not that it can only be used in a Windowsbased PC. Please browse the DVD and navigate to the PDF folder to find project-baseddocuments such as drawings, engineer's site notes and survey specifications amongst others. CCTV subsidence investigations do not account for the water tightness of the pipes and aremerely a visual inspection of inside of the drains. CCTV drainage engineers are generally notqualified to comment on the causes of subsidence, and can only suggest required remedialactions for the pipes, and not the affected buildings. Subsidence is a building structural failure, which can occur for many reasons. Althoughdrainage failures can contribute to subsidence problems, other causes should always beinvestigated as part of a considered approach. In order to eliminate drains from suspicion,WinCan suggests that all pipes within at least 10m of the subsidence area be pressure testedover and above a CCTV inspection, and remedial suggestions considered based on thefindings. Unless otherwise specified in an associated task order (or similar), the data gathered in thisreport may not be suitable for use as a pre-lining investigation. WinCan are happy to carry outsuch surveys, but this must be agreed prior to the commencement of the works, and a theclient must specify the data they wish to capture and the acceptable tolerances. Where GPS coordinates and heights have been issued within this report, they are to 1maccuracy, and 2m accuracy for heights. Greater accuracy can be provided on request. 2 Project Project 2023_03_28 3/28/2023 End Date 3/28/2023 Page C-1 Table of Contents Page T-1 3/28/2023Project2023_03_28 Section Profile .......................................................................................................................................................................................P-1 Section Summary .......................................................................................................................................................................................P-2 Section: 1; End of work area - MH 2 .......................................................................................................................................................................................1 WinCan .......................................................................................................................................................................................2 Page P-1 Section Profile Total: 0 = 200.40 Total Length ( 0.00 Length Surveyed ) 3/28/2023Project2023_03_28 Page P-2 Number of sections 1 Total length of sewer network 200.40 ft Inspected length of sewer network 200.40 ft Not inspected length of sewer network 0.00 ft Total abandoned inspections 1 Number of section inspection photos 0 Number of section inspection videos 1 Number of section inspection scans 0 Number of section inclination measurements 0 Pipe SegmentReference Upstream MH End of work area City Carlsbad Downstream MH MH 2 Street One Legoland Dr Shape Circular 24inch Total Length 200.4 Material Corrugated Metal Pipe Distance PACP Code Observation 1 0.00 AMH Manhole 2 0.00 MWL Water Level, 0% of the vertical dimension 3 8.80 TFA Tap Factory Made Active at 12 o'clock, 6inch dim 4 39.00 TBA Tap Break-In Active at 10 o'clock, 12inch dim 5 39.00 TBA Tap Break-In Active at 3 o'clock, 12inch dim 6 62.00 TB Tap Break-In at 12 o'clock, 6inch dim 7 97.60 TBA Tap Break-In Active at 12 o'clock, 6inch dim 8 117.00 TBA Tap Break-In Active at 12 o'clock, 6inch dim 9 127.60 TBA Tap Break-In Active at 12 o'clock, 10inch dim 10 159.00 TBA Tap Break-In Active at 9 o'clock, 8inch dim 11 159.00 TBA Tap Break-In Active at 3 o'clock, 8inch dim 12 200.40 MSA Survey Abandoned Section Summary 3/28/2023Project2023_03_28 Inspection report Date:Work Order:Pipe Segment Ref.:Weather:Surveyed By:Certificate Number: Year laid:Pre-cleaning:Pipe Joint Length:Direction:Total Length:Length Surveyed: 2023_03_28 // Page: 1 City:Carlsbad Drainage Area:Upstream MH:End of work area Street:One Legoland Dr Media Label:Up Rim to Invert:0.0 Location Code:Flow Control:Downstream MH:MH 2 Location Details:Sheet Number:Down Rim to Invert:0.0 Pipe shape:Circular Sewer Use:Total gallons used:0.0 Pipe size:24 "Sewer Category:SEC Joints passed:0 Pipe material:Corrugated Metal Pipe Purpose:Joints failed:0 Lining Method:Owner: Additional Info: 1:1513 Distance Code Observation Counter Photo Grade 0.00 AMH Manhole / MH 2 0.00 MWL Water Level, 0% of the vertical dimension 00:00:00 8.80 TFA Tap Factory Made Active at 12 o'clock, 6inch dim 00:00:40 39.00 TBA Tap Break-In Active at 10 o'clock, 12inch dim 00:01:54 39.00 TBA Tap Break-In Active at 3 o'clock, 12inch dim 00:02:01 62.00 TB Tap Break-In at 12 o'clock, 6inch dim 00:03:14 97.60 TBA Tap Break-In Active at 12 o'clock, 6inch dim 00:04:54 117.00 TBA Tap Break-In Active at 12 o'clock, 6inch dim 00:06:18 127.60 TBA Tap Break-In Active at 12 o'clock, 10inch dim 00:06:49 159.00 TBA Tap Break-In Active at 9 o'clock, 8inch dim 00:08:29 159.00 TBA Tap Break-In Active at 3 o'clock, 8inch dim 00:08:37 200.40 MSA Survey Abandoned / End of work area 00:10:07 3/28/2023 Phillip Lagos No Pre-Cleaning Upstream 200.4 '200.4 ' QSR QMR SPR MPR OPR SPRI MPRI OPRI 0000 0000 0.0 0.0 0.0 0.0 0.00.0 QOR 0000 MH 2 WinCan Notes: Thank you for choosing to use WinCan to carry out your drainage investigation works. The results and views carried in this report are those of the engineer(s) appointed to carry outthe investigation and are considered relevant on the day of the survey. Drain and sewerperformance is known to alter over time, so liability cannot be accepted for differences betweenthe recorded data and the actual data at a time after this report was generated. This survey has been created in accordance with the drainage standard used in the country andlanguage settings for this PC. If a DVD has been supplied with this report, please not that it can only be used in a Windowsbased PC. Please browse the DVD and navigate to the PDF folder to find project-baseddocuments such as drawings, engineer's site notes and survey specifications amongst others. CCTV subsidence investigations do not account for the water tightness of the pipes and aremerely a visual inspection of inside of the drains. CCTV drainage engineers are generally notqualified to comment on the causes of subsidence, and can only suggest required remedialactions for the pipes, and not the affected buildings. Subsidence is a building structural failure, which can occur for many reasons. Althoughdrainage failures can contribute to subsidence problems, other causes should always beinvestigated as part of a considered approach. In order to eliminate drains from suspicion,WinCan suggests that all pipes within at least 10m of the subsidence area be pressure testedover and above a CCTV inspection, and remedial suggestions considered based on thefindings. Unless otherwise specified in an associated task order (or similar), the data gathered in thisreport may not be suitable for use as a pre-lining investigation. WinCan are happy to carry outsuch surveys, but this must be agreed prior to the commencement of the works, and a theclient must specify the data they wish to capture and the acceptable tolerances. Where GPS coordinates and heights have been issued within this report, they are to 1maccuracy, and 2m accuracy for heights. Greater accuracy can be provided on request. 2 Locating Area Map(s) A I R X U T I L I T Y S U R V E Y O R S , I N C . LOCATING AREA MAP 1: TL624-Z371356 1 Ke y M a p Key: Unknown/GPR Electric Water Gas/Petroleum Communication Storm Drain Legoland Storm Drain (CCTV) Storm Drain (165” from bottom of the pipe) MH 2MH 1 End of Work Area Storm Drain (166” from bottom of the pipe) Storm Drain (202” from bottom of the pipe)