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HomeMy WebLinkAbout1.9-741524-20001334 2/5/2025 2 Table of Contents 1.0 PURPOSE ................................................................................................................. 3 2.0 GUIDELINES ............................................................................................................ 3 3.0 DESIGN APPROACH ............................................................................................... 3 4.0 CONCLUSION AND RECOMMENDATIONS ............................................................ 4 Hydrology Calculations ........................................................................... back of report Hydraulic Calculations and Pipe Profiles ................................................. back of report Drainage Exhibit ...................................................................... sleeve in back of report 24-20001334 2/5/2025 3 1.0 PURPOSE The purpose for this drainage study is as follows: 1. To size the pipes for the proposed storm drainage system in accordance with the City of Bakersfield requirements and guidelines. 2. To provide an economical and reasonable design for storm drain conveyance and disposal facilities. 3. To supplement the Hydrology Study dated June 2024 which verified the curb capacity & the catch basin sizes. 2.0 GUIDELINES The following design standards were used in the development of this study: 1. Initial times to concentration (roof to gutter) are 15 minutes for R-1 Development. 2. The runoff coefficients used are: · 0.15 - Park · 0.69 - R-1, 3600-4000 SF (COMPOSITE) · 0.85 - Pavement w/ Landscaping 3. Rainfall intensity curves used are those shown on Plate D-1 of the City of Bakersfield, Subdivision & Engineering Manual. 4. Sub-areas using multiple run-off coefficients are given a weighted average based on the area relative to each coefficient. 3.0 DESIGN APPROACH Catch Basins #1 & #2 will collect runoff from a portion of the drill site & proposed residential lots (Drainage Areas A & B) located on Calle Airosa halfway between of Camino Vistosa and Camino Bendita. This collected runoff flows into a series of 18” lines (Pipes K-M) flows into MH-115 at the T-intersection of Cantera Avenue and Camino Bendita. Drainage Areas C & D consists of the lots along Calle Las Olas & Laguna Blanca Drive discharging into CB #3 & CB #4. The flows will be conveyed through a couple of 18” lines (Pipes F & G) into MH-122. Drainage Area E will discharge into a catch basin (CB #5) at the knuckle of Laguna Blanca Drive & Camino Bendita. The flows from Areas C, D, & E in MH-122 connect to MH-123 via Pipe E (an 18” RCP) which ties into MH-123. Catch Basin #6 will collect from Drainage Area F located at the T-intersection of Calle Bendita and Calle Torino. MH-123 is the point of confluence for the discharge from Drainage Areas C to F then flows westerly via a 24” line (Pipe D) into MH-125. Catch Basins #7 & #8 (Drainage Areas G & H) will collect discharge on Camino Bendita adjacent to Calle Torino. These catch basins connect to Pipe C (a 24” RCP) which ties into MH-127. This manhole is the point of confluence for the discharge from Drainage Areas C to K. Drainage Areas I, J, & K will discharge into three catch basins (CB #9, CB #10, & CB #11) located at the T-intersection of Camino Bendita & Calle Senda Verde. This cumulative discharge will be conveyed through a 24” line (Pipe B) along Camino Bendita to MH-115. Manhole #115 will collect runoff from cumulative drainage from Tract 7415 then convey it southerly into Tract 7408 at existing MH-17. The flows for the sizing of the pipes were estimated utilizing the City of Bakersfield Rational Method in accordance with the Subdivision Standards. Flows were computed for the 10-year event using the formula Q = CIA, where Q is the flow in cubic feet per second, C is the runoff coefficient, I is the intensity in inches per hour, and A is the catchment’s area in acres. Since the main purpose of this report is the storm drain system leading to the basin and the curb capacities were determined based the 5-year storm event. The rational method for the 10-year event was performed using Autodesk Storm and Sanitary Analysis 2022. This program routes the flows and calculates the HGL for the system. The program has the ability to calculate the time of concentrations, but it also allows you to enter your 24-20001334 2/5/2025 4 own time. The time of concentration was calculated separately and the flow entered into the program. A spreadsheet similar to the curb capacity spreadsheet was used to determine the initial time of concentrations in a 10-year event. The flows from the 10-year event were calculated and routed. Starting HGL elevation for the analysis was at the downstream end of Pipe 22 at an elevation of 339.16. 4.0 CONCLUSION AND RECOMMENDATIONS The flows from the 10-year event were calculated and routed. All the pipes in this system were sized to be 18” RCP, 24” RCP, and 30” RCP. The HGL is not less than 0.5’ below the existing grade at any proposed manhole and catch basin. The main objectives of this study were to design an economical storm drain system and meet the design standards set by the City of Bakersfield. The storm drain system will be able to handle a 10-year event. 24-20001334 2/5/2025 SOIL MAP 24-20001334 2/5/2025 Hydrologic Soil Group—Kern County, California, Northwestern Part Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/17/2024 Page 1 of 439091103909190390927039093503909430390951039095903909670390975039091103909190390927039093503909430390951039095903909670304880304960305040305120305200305280305360 304880 304960 305040 305120 305200 305280 35° 18' 42'' N 119° 8' 46'' W35° 18' 42'' N119° 8' 27'' W35° 18' 21'' N 119° 8' 46'' W35° 18' 21'' N 119° 8' 27'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 11N WGS84 0 150 300 600 900 Feet 0 45 90 180 270 Meters Map Scale: 1:3,180 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. 24-20001334 2/5/2025 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: Kern County, California, Northwestern Part Survey Area Data: Version 16, Aug 31, 2023 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Mar 12, 2022—Mar 22, 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—Kern County, California, Northwestern Part Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/17/2024 Page 2 of 4 24-20001334 2/5/2025 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 174 Kimberlina fine sandy loam, 0 to 2 percent slopes MLRA 17 A 42.4 100.0% Totals for Area of Interest 42.4 100.0% 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—Kern County, California, Northwestern Part Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/17/2024 Page 3 of 4 24-20001334 2/5/2025 Component Percent Cutoff: None Specified Tie-break Rule: Higher Hydrologic Soil Group—Kern County, California, Northwestern Part Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 6/17/2024 Page 4 of 4 24-20001334 2/5/2025 HYDROLOGY CALCULATIONS 24-20001334 2/5/2025 CITY OF BAKERSFIELD RATIONAL METHOD (In accordance with City of Bakersfield Standards) TABLE OF RUNOFF COEFFICIENTS R-1, 6000 SF 0.42 JOB TITLE:TRACT 7415 R-1, 6750 SF 0.4 DATE:Oct-24 R-1, 7500 SF 0.38 R-1, 10000 SF 0.34 Rational Values:R-1, 15000 SF 0.27 Event: 10 YEAR Values: 5, 10, 50 COMPOSITE R-1, 3600-4000 SF 0.69 M.A.P. 6 in./yr. Values: 6, 10, 15, 20, 25, 30 R-3, R-4, M-H 0.8 Commercial 0.9 Curve Values Parks 0.15 a: 2.38 I=a+bTc (Tc<20min.) Grasslands, Type A Soil 0.15 b: -0.058 Grasslands, Type B Soil 0.25 P60: 0.550 I=K1*(6.02*Tc)^(0.17*LN(p60/K1) Grasslands, Type C Soil 0.35 K1: 40.00 (Tc>=20min.) Grasslands, Type D Soil 0.45 Pavement with Landscaping 0.85 Backyards 0.05 Lawn-landscape 2% slope 0.10 0.17 Lawn-landscape 2-7% slope 0.15 0.22 Lawn-landscape 7% slope 0.20 0.35 SUBAREA C I A rslt Tc L dH Sg Q Street V Trial Tc Roof to Tm D Curb NAME Runoff Intensity Total Time Length Elev. Gutter Flow Type Vel. MIN. Gutter Travel Pipe Cap Coef. IN/HR Area Conc. Feet Diff. Slope CFS FPS Time Time Dia. In AC. MIN. Feet Ft/Ft MIN. MIN. In. AREA B 0.69 1.10 6.15 23.11 1000 2.93 0.29% 4.65 60 2.06 23.11 15 8.11 5.02 PIPE N 25 2.63 0.16 18 23.27 AREA A 0.69 1.35 2.20 17.71 279 0.73 0.26% 2.05 60 1.72 17.71 15 2.71 4.10 PIPE O 15 1.16 0.22 18 17.93 PIPE M 0.69 1.09 8.35 304 6.29 3.56 23.27 1.43 18 24.70 PIPE L 0.69 1.04 8.35 51 6.02 3.41 24.70 0.25 18 24.95 PIPE K 0.69 1.04 8.35 94 5.98 3.38 24.95 0.46 18 25.41 AREA C 0.69 1.08 4.57 23.52 935 2.32 0.25% 3.41 60 1.83 23.52 15 8.52 4.65 PIPE H 27 1.93 0.24 18 23.76 AREA D 0.69 1.21 3.57 20.16 556 1.39 0.25% 2.98 60 1.79 20.16 15 5.16 4.47 PIPE I 15 1.69 0.15 18 20.31 PIPE G 0.69 1.07 8.14 198 6.04 3.42 23.76 0.97 18 24.72 Tc CALCULATIONS TRACT 7415 Hydrology_10_yr - REV.xls McIntosh Associates 10800 Stockdale Hwy., Suite 103 Bakersfield, CA 93311 10 yr Calc 24-20001334 2/5/2025 SUBAREA C I A rslt Tc L dH Sg Q Street V Trial Tc Roof to Tm D Curb NAME Runoff Intensity Total Time Length Elev. Gutter Flow Type Vel. MIN. Gutter Travel Pipe Cap Coef. IN/HR Area Conc. Feet Diff. Slope CFS FPS Time Time Dia. In AC. MIN. Feet Ft/Ft MIN. MIN. In. PIPE F 0.69 1.04 8.14 49 5.86 3.32 24.72 0.25 18 24.97 AREA E 0.69 1.50 1.30 15.12 18 0.20 1.08% 1.356 60 2.48 15.12 15 0.12 2.83 PIPE J 33 0.89 0.62 18 15.74 PIPE E 0.69 1.04 9.44 262 6.75 2.12 24.97 2.03 24 27.016 AREA F 0.69 1.15 3.79 21.75 793 2.36 0.30% 3.00 60 1.96 21.75 15 6.75 4.40 PIPE U 15 1.70 0.15 18 21.90 PIPE D 0.69 0.98 13.23 96 8.94 2.84 26.96 0.56 24 27.571 AREA G 0.15 1.38 1.95 17.14 259 2.08 0.80% 0.40 60 2.02 17.14 15 2.14 2.00 PIPE T 26 0.23 1.88 18 19.02 AREA H 0.69 1.15 3.64 21.72 787 2.36 0.30% 2.88 60 1.95 21.72 15 6.72 4.35 PIPE S 15 1.63 0.16 18 21.88 PIPE C 0.63 0.97 18.82 307 11.51 3.66 27.57 1.40 24 28.96 AAREA I 0.69 1.12 3.75 22.40 794 1.87 0.24% 2.90 60 1.79 22.40 15 7.40 4.44 PIPE R 25 1.64 0.26 18 22.66 AREA J 0.69 1.20 2.30 20.52 625 1.98 0.32% 1.90 60 1.89 20.52 15 5.52 3.96 PIPE Q 15 1.07 0.24 18 20.76 PIPE P 0.69 1.11 6.05 43 4.64 2.63 22.66 0.27 18 22.93 AREA K 0.15 1.38 1.22 17.19 259 2.08 0.80% 0.25 60 1.97 17.19 15 2.19 1.62 PIPE V 26 0.14 3.02 18 20.21 PIPE B 0.62 0.93 26.10 120 15.16 4.82 28.89 0.41 24 29.38 Hydrology_10_yr - REV.xls McIntosh Associates 10800 Stockdale Hwy., Suite 103 Bakersfield, CA 93311 10 yr Calc 27.01 28.96 24-20001334 2/5/2025 SUBAREA C I A rslt Tc L dH Sg Q Street V Trial Tc Roof to Tm D Curb NAME Runoff Intensity Total Time Length Elev. Gutter Flow Type Vel. MIN. Gutter Travel Pipe Cap Coef. IN/HR Area Conc. Feet Diff. Slope CFS FPS Time Time Dia. In AC. MIN. Feet Ft/Ft MIN. MIN. In. PIPE A 0.64 0.92 34.45 201 20.31 4.14 29.38 0.81 30 30.19 PIPE 25 0.64 0.90 34.45 50 19.91 4.06 30.19 0.21 30 30.39 AREA 1 0.15 1.80 0.83 10.00 97 1.26 1.30% 0.22 60 1.97 10.00 0 0.82 1.43 PIPE 26 25 0.13 3.34 18 13.34 AREA 2 0.78 1.40 4.05 16.85 400 3.60 0.90% 4.40 60 3.61 16.85 15 1.85 4.47 PIPE 33 25 2.49 0.17 18 17.02 AREA 3 0.81 1.46 1.45 15.85 134 1.98 1.47% 1.71 60 2.65 15.85 15 0.85 3.04 PIPE 2 15 0.97 0.27 18 16.12 PIPE 32 0.78 1.39 5.50 43 6.00 3.40 17.02 0.21 18 17.23 PIPE 22 0.65 0.90 40.78 134 23.79 0.35 30.39 6.43 30 36.82 Hydrology_10_yr - REV.xls McIntosh Associates 10800 Stockdale Hwy., Suite 103 Bakersfield, CA 93311 10 yr Calc 24-20001334 2/5/2025 DBASIN EXHIBIT HYDRAULIC CALCULATIONS AND PIPE PROFILES 24-20001334 2/5/2025 TRACT 7408 HYDRAULIC CALCULATIONS (OUTPUT) Pipe Pipe Pipe Flow Avg. Capacity Invert HGL Velocity Velocity EGL Sf Invert No. Length Size Rate Velocity Flowing Down Down Down Head Down Down Up (ft)(in)(cfs)(ft/s)Full (cfs)(ft)(ft)(ft/s)Dn (ft)(ft)(%)(ft) PIPE 2 15.42 18 1.71 0.97 4.63 337.95 340.29 0.97 0.01 340.31 0.027 337.98 PIPE 22 134.00 30 23.79 4.85 41.92 334.85 339.02 4.85 0.37 339.38 0.337 336.25 PIPE 25 50.00 30 19.91 4.06 38.91 336.25 339.98 4.06 0.26 340.23 0.236 336.70 PIPE 26 25.42 18 0.22 0.12 3.61 338.22 339.98 0.12 0.00 339.98 0 338.25 PIPE 32 42.75 18 6.00 3.40 4.54 337.87 339.98 3.40 0.18 340.15 0.327 337.95 PIPE 33 25.42 18 4.40 2.49 3.61 337.95 340.29 2.49 0.10 340.39 0.176 337.98 PIPE A 201.44 30 20.31 5.22 38.77 336.70 339.68 4.14 0.27 339.94 0.245 338.50 PIPE B 119.65 24 15.16 4.83 13.08 338.50 340.68 4.83 0.36 341.04 0.449 338.90 PIPE C 307.25 24 11.51 3.66 12.90 338.90 341.58 3.66 0.21 341.79 0.259 339.90 PIPE D 95.50 24 8.94 2.85 13.69 339.90 342.58 2.85 0.13 342.71 0.156 340.25 PIPE E 262.30 24 6.75 2.15 10.07 340.25 342.86 2.15 0.07 342.93 0.089 340.77 PIPE F 49.42 18 5.86 3.32 3.95 340.77 343.16 3.32 0.17 343.33 0.312 340.84 PIPE G 198.23 18 6.04 3.42 5.53 340.84 343.45 3.42 0.18 343.63 0.332 341.39 PIPE H 27.42 18 3.41 1.93 5.31 341.39 344.29 1.93 0.06 344.34 0.105 341.46 PIPE I 15.42 18 2.98 1.70 7.07 341.39 344.29 1.70 0.04 344.33 0.082 341.46 PIPE J 32.97 18 1.35 0.76 10.35 340.77 343.16 0.76 0.01 343.17 0.017 341.09 PIPE K 93.99 18 5.98 3.40 4.72 339.50 341.00 3.40 0.18 341.18 0.327 339.69 PIPE L 51.42 18 6.02 3.41 4.63 339.69 341.44 3.41 0.18 341.62 0.329 339.79 PIPE M 304.40 18 6.29 3.57 4.70 339.79 341.75 3.57 0.20 341.94 0.36 340.40 PIPE N 25.42 18 4.65 2.63 10.62 340.40 343.04 2.63 0.11 343.15 0.196 340.66 PIPE O 15.42 18 2.05 1.16 13.64 340.40 343.04 1.16 0.02 343.06 0.038 340.66 PIPE P 42.75 18 4.64 3.62 13.34 340.00 341.58 2.63 0.11 341.69 0.195 340.69 PIPE Q 15.42 18 1.90 1.31 5.35 340.69 341.85 1.29 0.03 341.88 0.037 340.73 PIPE R 25.42 18 2.90 1.99 4.17 340.69 341.85 1.97 0.06 341.91 0.085 340.73 PIPE S 15.42 18 2.88 1.63 15.59 340.40 342.58 1.63 0.04 342.62 0.075 340.74 PIPE T 28.99 18 0.40 0.23 8.94 340.40 342.58 0.23 0.00 342.58 0.001 340.61 PIPE U 15.39 18 3.00 1.70 10.37 340.61 342.86 1.70 0.04 342.90 0.082 340.76 PIPE V 25.90 18 0.25 0.14 9.23 340.00 341.58 0.14 0.00 341.58 0.001 340.20 Pipe HGL Grnd/Rim Cover Velocity Velocity EGL Sf Sf Energy J-Loss Minor No. Up Elev. Up Up Up Head Up Up Up Avg. Loss Coeff Loss (ft)(ft)(ft)(ft/s)(ft)(ft)(%)(%)(ft)(ft) PIPE 2 340.30 342.46 2.98 0.97 0.01 340.31 0.027 0.027 0.004 1 0.01 1.66 PIPE 22 339.47 343.27 4.52 4.85 0.37 339.83 0.337 0.337 0.451 0.15 0.05 3.30 PIPE 25 340.09 343.50 4.30 4.06 0.26 340.35 0.236 0.236 0.118 0.15 0.04 2.91 PIPE 26 339.98 342.65 2.90 0.12 0.00 339.98 0 0 0 1 0 2.17 PIPE 32 340.11 343.06 3.61 3.40 0.18 340.29 0.326 0.327 0.14 1 0.18 2.45 PIPE 33 340.34 342.46 2.98 2.49 0.10 340.44 0.176 0.176 0.045 1 0.1 1.62 PIPE A 340.06 346.74 5.74 6.31 0.62 340.68 0.483 0.364 0.734 1 0.62 6.18 PIPE B 341.22 346.26 5.36 4.83 0.36 341.58 0.449 0.449 0.538 1 0.36 4.54 PIPE C 342.37 346.06 4.16 3.66 0.21 342.58 0.259 0.259 0.796 1 0.21 3.19 PIPE D 342.73 346.08 3.83 2.85 0.13 342.86 0.156 0.156 0.149 1 0.13 2.85 PIPE E 343.09 346.94 4.17 2.15 0.07 343.16 0.089 0.089 0.234 1 0.07 3.35 PIPE F 343.32 347.14 4.80 3.32 0.17 343.49 0.311 0.311 0.154 0.75 0.13 3.32 PIPE G 344.10 346.49 3.60 3.42 0.18 344.29 0.332 0.332 0.658 1 0.18 1.89 PIPE H 344.31 346.60 3.64 1.93 0.06 344.37 0.105 0.105 0.029 1 0.06 1.79 PIPE I 344.30 346.07 3.11 1.70 0.04 344.34 0.082 0.082 0.013 1 0.04 1.27 PIPE J 343.17 346.01 3.42 0.76 0.01 343.18 0.017 0.017 0.005 1 0.01 2.34 PIPE K 341.31 346.74 5.55 3.40 0.18 341.49 0.326 0.327 0.307 0.75 0.13 4.93 PIPE L 341.61 346.82 5.53 3.41 0.18 341.79 0.329 0.329 0.169 0.75 0.14 4.71 PIPE M 342.84 345.99 4.09 3.57 0.20 343.04 0.36 0.36 1.096 1 0.2 2.65 PIPE N 343.09 345.56 3.40 2.63 0.11 343.20 0.196 0.196 0.05 1 0.11 1.97 PIPE O 343.05 345.56 3.40 1.16 0.02 343.07 0.038 0.038 0.006 1 0.02 2.01 PIPE P 341.52 j 345.68 3.49 4.62 0.33 341.85 0.558 0.376 0.161 1 n/a ###### PIPE Q 341.86 345.38 3.15 1.33 0.03 341.88 0.039 0.038 0.006 1 0.03 3.02 PIPE R 341.87 345.38 3.15 2.01 0.06 341.94 0.088 0.087 0.022 1 0.06 3.01 PIPE S 342.59 345.63 3.39 1.63 0.04 342.64 0.075 0.075 0.012 1 0.04 2.54 PIPE T 342.58 345.51 3.40 0.23 0.00 342.58 0.001 0.001 0 1 0 2.43 PIPE U 342.87 345.66 3.40 1.70 0.04 342.92 0.082 0.082 0.013 1 0.04 2.29 PIPE V 341.58 345.51 3.81 0.15 0.00 341.58 0 0.001 0 1 0 3.43 24-20001334 2/5/2025 PIPE 25PIPE 22PIPE 21PIPE AMH-15MH-16MH-17JOIN EX STUBMH-11524-200013342/5/2025 PIPE BPIPE CPIPE DPIPE EMH-115MH-127MH-125MH-123MH-12224-200013342/5/2025 PIPE FMH-122MH-12124-200013342/5/2025 PIPE GMH-121MH-12024-200013342/5/2025 PIPE HMH-120CB-324-200013342/5/2025 PIPE IMH-120CB-424-200013342/5/2025 PIPE JMH-122CB-524-200013342/5/2025 PIPE KMH-115MH-11424-200013342/5/2025 PIPE LMH-114MH-11324-200013342/5/2025 PIPE MMH-113MH-11224-200013342/5/2025 PIPE NMH-112CB-224-200013342/5/2025 PIPE OMH-112CB-124-200013342/5/2025 PIPE PMH-127MH-12824-200013342/5/2025 PIPE QMH-1287CB-10824-200013342/5/2025 PIPE RMH-128CB-924-200013342/5/2025 PIPE SMH-125CB-824-200013342/5/2025 PIPE TMH-125CB-724-200013342/5/2025 PIPE UMH-123CB-624-200013342/5/2025 PIPE VMH-1273CB-1124-200013342/5/2025 DRAINAGE EXHIBIT 24-20001334 2/5/2025 N E W G E N E N G I N E E R I N G G R O U PDRILL SITE24-200013342/5/2025