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Home My WebLink AboutSW3220403_Design Calculations_20220429ENGINEERING CALCULATIONS FOR THE BLUFFS AT WESLEY CHAPEL UNION COUNTY, NORTH CAROLINA Jones Homes USA 370 Centerpointe Circle Altamonte Springs, FL 32701 February 2022 LandDesign Project #: 1021119 Calculated By: CJC 5EAL 043168 02/25/2022 LandDesigm TABLE OF CONTENTS • PROJECT NARRATIVE • USGS MAP • SOILS MAP • FLOOD MAP • EROSION CONTROL CALCULATIONS • SEDIMENT BASIN CALCULATIONS • TEMPORARY SLOPE DRAIN CALCULATIONS • TEMPORARY DIVERSION DITCH CALCULATIONS • PRE DEVELOPED CALCULATIONS • POST DEVELOPED CALCULATIONS • BMP-1 CALCULATIONS • BMP-2 CALCULATIONS • BOUYANCY CALCULATIONS • RIP RAP CALCULATIONS • STORM DRAINAGE CALCULATIONS • STORM DRAINAGE CALCULATIONS - 10 YEAR • STORM DRAINAGE CALCULATIONS - 25 YEAR Project Narrative: The Bluffs at Wesley Chapel LDI Project No. 1021119 Developer: Jones Homes USA 370 Centerpointe Circle Altamonte Springs, FL 32701 Project Description: The following calculations have been performed in support of the construction of The Bluffs at Wesley Chapel Single -Family Residential Development. The project is zoned R-40 in Union County, NC. The construction will include installation of new buildings, associated utilities, storm drainage, wet pond, and offsite roadway improvements. Soils Information: The predominant soils for this site are TbB2, GsE, ChA. The site soils map showing detailed locations is included. For design purposes, "B" & "D" were used as the hydrologic soil groups. Erosion Control: Silt fence will be used around the site to prevent sediment from entering adjacent properties and the existing creek. Temporary diversion ditches and skimmer sediment basins will be installed within the site to prevent sediment from entering the storm drainage system until the areas around them have been stabilized. Pre -Developed Drainage: The existing storm water collection system consists of sheet flow, shallow concentrated, and open channel flow. The existing storm water collects into East Fork Twelvemile Creek, which runs along the northern property boundary. Post -Developed Drainage: The proposed storm water collection system will consist of drainage swales and one wet pond within the project boundaries. The storm system was designed to detain the 10 and 25 year storm events and to have a minimum of 85% average annual removal for Total Suspended Solids and 40% average annual removal for Total Phosphorus. Proposed water quality/channel protection/detention requirements are being met according to the NCDEQ Requirements. Water Quality Summary: BMP-1 Required Surface Area: 4,890 sf BMP-1 Required WQ Volume: 10,725 cf BMP-2 Required Surface Area: 5,946 sf BMP-2 Required WQ Volume: 15,460 cf BMP-1 WQ Volume of 10,725 cf is provided at elevation 570.60 ft. BMP-2 WQ Volume of 15,460 cf is provided at elevation 576.59 ft. Stormwater Detention Summary: Site Drainage Area Total: 37.65 acres Qz (Pre -Developed): 16.82 cfs Q,o (Pre -Developed): 46.11 cfs Qzs (Pre -Developed): 67.52 cfs Qz (Post -Developed BMP-1) Detained Detention Release: 3.81 cfs Q,o (Post -Developed BMP-1) Detained Detention Release: 10.97 cfs Qzs (Post -Developed BMP-1) Detained Detention Release: 14.49 cfs Qz (Post -Developed BMP-2) Detained Detention Release: 0.79 cfs Q,o (Post -Developed BMP-2) Detained Detention Release: 3.37 cfs Qzs (Post -Developed BMP-2) Detained Detention Release: 6.32 cfs Qz (Post -Developed Non -detained Area): 10.74 cfs Q,o (Post -Developed Non -detained Area): 30.92 cfs Qzs (Post -Developed Non -detained Area): 46.23 cfs Qz (Post -Developed Total): 3.81 + 0.79 + 10.74 = 15.34 cfs Q,o (Post -Developed Total): 10.97 + 3.37 + 30.92 = 45.26 cfs Qzs (Post -Developed Total): 14.49 + 6.32 + 46.23 = 67.04 cfs Qz (Post -Developed vs. Pre -Developed): 15.34 cfs < 16.82 cfs Q,o (Post -Developed vs. Pre -Developed): 45.26 cfs < 46.11 cfs Qzs (Post -Developed vs. Pre -Developed): 67.04 cfs < 67.52 cfs Conclusion: The engineering analysis presented herein this document demonstrates the ability of the Wet Ponds to meet the design requirements. The calculations show the Wet Pond has sufficient volume to meet the NCDEQ's requirements for BMPs. Moreover, the routing calculations show the Wet Pond's ability to detain flows to pre -developed rates. USGS Map: The National Map Advanced Viewer CY,v. _ _ -.�_ �ti, � IM1 ,��. :. � .I r I _. . �„ �� __ �rl�rf.' `fir. . � I i. - • �'"-- Q. �- 1 `` � '! � - _ :� - �•'��_��'�'' --- 'fir-�;±F{'r. '- i _ - •'�- � � � ! � — {-''�,}' �,`' _=�' __.,-- 1 4:� _ - .. f-"__-' � r' �� - — ,`r'.•. • f _ � "tom � - - -�~ "�-1 •`��--' , I ;'ik-� � � I ••�:} _ �•�f _`�r'' '�{:' 'i ;I `f f, f- � rf''S `�_ - I rJ • ITL F - }{~� - I _ 'r,� .'' 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N 528800 a MAP LEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils 0 Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Iwo Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit �i Gravelly Spot Landfill A. Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip oa Sodic Spot Custom Soil Resource Report MAP INFORMATION Spoil Area The soil surveys that comprise your AOI were mapped at 1:24,000. Stony Spot Very Stony Spot Warning: Soil Map may not be valid at this scale. Wet Spot Enlargement of maps beyond the scale of mapping can cause Other misunderstanding of the detail of mapping and accuracy of soil �- Special Line Features line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed Water Features scale. Streams and Canals Transportation Please rely on the bar scale on each map sheet for map E F Rails measurements. . 0 Interstate Highways Source of Map: Natural Resources Conservation Service US Routes Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Major Roads Local Roads Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts Background distance and area. A projection that preserves area, such as the Aerial Photography 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: Union County, North Carolina Survey Area Data: Version 22, Jan 21, 2022 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jul 18, 2011—Nov 25, 2017 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. 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI ChA Chewacla silt loam, 0 to 2 9.1 22.2% percent slopes, frequently flooded GsE Goldston-Badin complex, 15 to 16.8 41.0% 45 percent slopes TbB2 Tarrus gravelly silty clay loam, 2 15.0 36.8% to 8 percent slopes, moderately eroded Totals for Area of Interest 40.8 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate 11 Custom Soil Resource Report pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha -Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12 Custom Soil Resource Report Union County, North Carolina ChA—Chewacla silt loam, 0 to 2 percent slopes, frequently flooded Map Unit Setting National map unit symbol: 3wOp Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 59 to 66 degrees F Frost -free period: 200 to 240 days Farmland classification: Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Map Unit Composition Chewacla and similar soils: 87 percent Minor components: 13 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Chewacla Setting Landform: Flood plains Down -slope shape: Concave Across -slope shape: Linear Parent material: Loamy alluvium derived from igneous and metamorphic rock Typical profile A - 0 to 4 inches: silt loam Bwl - 4 to 26 inches: silty clay loam Bw2 - 26 to 38 inches: loam Bw3 - 38 to 60 inches: clay loam C - 60 to 80 inches: loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Somewhat poorly drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 6 to 24 inches Frequency of flooding: NoneFrequent Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 11.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4w Hydrologic Soil Group: B/D Hydric soil rating: No Minor Components Congaree Percent of map unit. 8 percent Landform: Flood plains 13 Custom Soil Resource Report Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: No Wehadkee, undrained Percent of map unit. 5 percent Landform: Depressions on flood plains Down -slope shape: Concave Across -slope shape: Linear Hydric soil rating: Yes GsE—Goldston-Badin complex, 15 to 45 percent slopes Map Unit Setting National map unit symbol: 3wl 3 Elevation: 200 to 650 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 59 to 66 degrees F Frost -free period: 200 to 240 days Farmland classification: Not prime farmland Map Unit Composition Goldston and similar soils: 55 percent Badin and similar soils: 30 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Goldston Setting Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Linear Across -slope shape: Convex Parent material: Residuum weathered from metavolcanics and/or argillite Typical profile A - 0 to 7 inches: very channery silt loam Bw - 7 to 11 inches: very channery silt loam Cr - 11 to 23 inches: weathered bedrock R - 23 to 80 inches: unweathered bedrock Properties and qualities Slope: 15 to 45 percent Depth to restrictive feature: 10 to 20 inches to paralithic bedrock; 20 to 40 inches to lithic bedrock Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 1.98 in/hr) 14 Custom Soil Resource Report Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Very low (about 1.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7s Hydrologic Soil Group: D Hydric soil rating: No Description of Badin Setting Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Linear Across -slope shape: Convex Parent material: Residuum weathered from metavolcanics and/or argillite Typical profile A - 0 to 2 inches: channery silt loam E - 2 to 9 inches: channery silt loam Bt1 - 9 to 21 inches: channery silty clay loam Bt2 - 21 to 36 inches: silty clay Cr - 36 to 45 inches: weathered bedrock R - 45 to 80 inches: unweathered bedrock Properties and qualities Slope: 15 to 45 percent Depth to restrictive feature: 20 to 40 inches to paralithic bedrock; 40 to 80 inches to lithic bedrock Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 6.' Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: C Hydric soil rating: No Minor Components Tarrus Percent of map unit. 5 percent Landform: Hillslopes on ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Linear Across -slope shape: Convex Very low to high (0.00 inches) 15 Custom Soil Resource Report Hydric soil rating: No TbB2—Tarrus gravelly silty clay loam, 2 to 8 percent slopes, moderately eroded Map Unit Setting National map unit symbol. 2mx8q Elevation: 200 to 1,400 feet Mean annual precipitation: 37 to 60 inches Mean annual air temperature: 59 to 66 degrees F Frost -free period: 200 to 240 days Farmland classification: All areas are prime farmland Map Unit Composition Tarrus, moderately eroded, and similar soils: 85 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Tarrus, Moderately Eroded Setting Landform: I me rfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from schist and/or other metamorphic rock Typical profile Ap - 0 to 6 inches: gravelly silty clay loam Bt - 6 to 45 inches: silty clay Cr - 45 to 80 inches: weathered bedrock Properties and qualities Slope: 2 to 8 percent Depth to restrictive feature: 40 to 60 inches to paralithic bedrock Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 4.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Hydric soil rating: No it. Flood Map: National Flood Hazard Layer FI RMette *FEMA Legend 8Oo41'30"W 34o58'46"N SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT I.V,VVV 0 250 500 1,000 1,500 2,000 Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 Without Base Flood Elevation (BFE) Zone A, V, A99 SPECIAL FLOOD Wit hBFE orDepthZoneAE,AD,AH,Ve,Aa HAZARD AREAS Regulatory Floodway OTHER AREAS OF FLOOD HAZARD 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mile Zonex Future Conditions 1% Annual 4 '- Chance Flood Hazard Zonex "Area with Reduced Flood Risk due to Levee. See Notes. Zonex " Area with Flood Risk due to Leveezone D NOSCREEN Area of Minimal Flood Hazard Q Effective LOMRs OTHER AREAS Area of Undetermined Flood Hazard GENERAL - — - - Channel, Culvert, or Storm Sewer STRUCTURES IIIIIII Levee, Dike, or Floodwall e zo.z Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation a - - - Coastal Transect —sfa— Base Flood Elevation Line (BFE) Limit of Study Jurisdiction Boundary — --- Coastal Transect Baseline OTHER _ Profile Baseline FEATURES Hydrographic Feature Digital Data Available AN El No Digital Data Available MAP PANELS El Unmapped QThe pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 2/23/2022 at 9:34 AM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data overtime. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. 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I / I I 1 ❑ // 571// 9, 585 �;1 v--___; v ❑ \\ / SOP°-- 44) 1vv vv❑v�VA\ V A I I I / I II I 1 I I I � / � � �- I I .'• / v A �/� ;,/ � vvv AVA\�V��\\\ V �V A \ �-v• I / / / / / l I / � I I I I I I 1 1 1 x -� �� _ ----vv / ////_ __--� ❑AV �\ � \\��\ \ \ \ \ v I �vv— � / � V I 1 A � I _, — � v / / / ---� A\ VAVA\\\ V�\ \ \ \ V A I I ❑ v v v �v / I I I II � I \ \\ I // v V 1 // I ��,—� \❑ —/// / /,-- � \\I II1�`�IIIIVA\\A❑\•\\I��\ V 1 ' V � v vv l I I 1 I � / � (� '-, \ \ // / 1 I I I �I II I��\VAS❑� \\ \ \ V 1 V � vv \\ AA\�� v v � I I v A v� 1 / � � � I v v \vvvvv v ❑ _ ��,�� v v v �� =-_ _ ❑ vv`i w�lii°ilw 1\II�VAIIIIIjIIII I�I NOTES: 1. SEE SHEET ### FOR CONSTRUCTION SEQUENCE AND SHEETS C518 - C529 FOR EROSION CONTROL NOTES AND DETAILS. 2. EROSION CONTROL PLANS SHALL NOT BE USED FOR FINAL GRADING. SEE CHAPTER 5 FOR FINAL GRADING PLAN. 3. SEE CHAPTER 6 FOR STORM DRAINAGE PLANS. 4. SEE CHAPTER 7 FOR UTILITY PLANS. 5. LIMITS OF CONSTRUCTION/ CLEARING LIMITS: 25.98 AC LEGEND: DRAINAGE AREA LIMITS (SEDIMENT BASIN) r DRAINAGE AREA LIMITS (SILT FENCE) L LIMITS OF CONSTRUCTION/ CLEARING LIMITS --p SKIMMER ATTACHMENT (NCDEQ #6.64) BAFFLE (NCDEQ #6.65) PROP. R/W STORM DRAINAGE TEMPORARY SILT FENCE (NCDEQ #6.62) DOUBLE ROW HIGH HAZARD TEMPORARY SILT FENCE ® SPECIAL SEDIMENT CONTROL FENCE (NCDOT #1606.01) TEMP. CONSTRUCTION ENTRANCE/EXIT (NCDEQ #6.06) TD-> TEMP. DIVERSION DITCH (NCDEQ #6.20) _ ROCK CHECK DAM (NCDEQ #6.63) SLOPE DRAIN (NCDEQ #6.32) TEMPORARY WETLAND MUD MAT CROSSING L,.ndDesjl,m- 223 NORTH GRAHAM STREET CHARLOTTE, NC 28202 704.333.0325 WWW.LANDDESIGN.COM KEY MAP SEAL NOT FOR CONSTRUCTION PROJECT THE BLUFFS AT WESLEY CHAPEL JONES HOMES USA UNION COUNTY NORTH CAROLINA LANDDESIGN PROJ.# 1021119 REVISION / ISSUANCE NO. 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SEE SHEET ### FOR CONSTRUCTION SEQUENCE AND SHEETS C518 - C529 FOR EROSION CONTROL NOTES AND DETAILS. 2. EROSION CONTROL PLANS SHALL NOT BE USED FOR FINAL GRADING. SEE CHAPTER 5 FOR FINAL GRADING PLAN. 3. SEE CHAPTER 6 FOR STORM DRAINAGE PLANS. 4. SEE CHAPTER 7 FOR UTILITY PLANS. 5. LIMITS OF CONSTRUCTION/ CLEARING LIMITS: 25.98 AC LEGEND: DRAINAGE AREA LIMITS (BMP) DRAINAGE AREA LIMITS (SILT FENCE) LIMITS OF CONSTRUCTION/ CLEARING LIMITS PROP. R/W STORM DRAINAGE TEMPORARY SILT FENCE (NCDEQ #6.62) DOUBLE ROW HIGH HAZARD TEMPORARY SILT FENCE ® SPECIAL SEDIMENT CONTROL FENCE (NCDOT #1606.01) TEMP. CONSTRUCTION ENTRANCE/EXIT (NCDEQ #6.06) INLET PROTECTION O❑ (NCDEQ #6.51) L,.ndDesjl,m- 223 NORTH GRAHAM STREET CHARLOTTE, NC 28202 704.333.0325 WWW.LANDDESIGN.COM KEY MAP SEAL NOT FOR CONSTRUCTION PROJECT THE BLUFFS AT WESLEY CHAPEL JONES HOMES USA UNION COUNTY NORTH CAROLINA LANDDESIGN PROJ.# 1021119 REVISION / ISSUANCE NO. DESC��!RIIP��T%%ION DATE 11 LM�S �N�ITTA T 0202 H21 2 REVISED PER UNION COUNTY 07/15/2021 3 REVISED LOT LAYOUT AND COUNT 09/30/2021 DESIGNED BY: CJC DRAWN BY: CJC CHECKED BY: MG SCALE NORTH VERT: N/A HORZ: 1 "=100' 0 50' 100, 200' SHEET TITLE EROSION CONTROL - PHASE 2 BASIN DRAINAGE AREA MAP 2/23/202211:29AM 0*FRSQ339TI1M NMA2QQ2n(D0211S(D021199P12LN IPIP[22D&AVMRRDDVQG ORIGINAL SHEET SIZE: 24" X 3 SHEET NUMBER EXHIBIT Sediment Basin Calculations: Sediment Basin Design Project: The Bluffs at Wesley Chapel Location: Union County Developer: Jones Homes USA Design Criteria: Design Storm Rational Runoff Coeff. Intensity 10 yr 7.49 in/hr (Tc= 5 min.) Computed By: CJC Checked By: MLG Settling Efficiency Criteria: Design Storm Rational Runoff Coeff. Intensity Date: 1 / 12/2022 Revised: 2 yr 5.86 in/hr (Tc= 5 min.) Basin Number Drainage Area (Acres) Denuded Area (Acres) Sediment Basin Volume Required Provided Bottom Area Sq ft Depth ft. Top Area Sq ft Surface Area Required Sq ft Side- slope Skimmer Size (inches) Orifice Diameter (inches) Dewatering Time (days) 10-yr Flow cfs SB-1 2.82 2.82 5,076 20,647 3,405 4 7,107 6,432 3 3.0 2.50 2.86 14.79 SB-2 4.22 4.22 7,596 29,802 5,329 4 9,738 9,625 3 4.0 2.80 3.29 22.13 SB-3 1.42 1.42 2,556 8,693 1,024 4 3,512 3,239 3 2.0 1.80 2.32 7.45 SB-4 2.14 2.14 3,852 13,246 2,128 4 4,919 4,881 3 2.5 2.10 2.60 11.22 SB-5 1.33 1.33 2,394 33,930 6,342 4 10,776 3,033 3 4.0 3.00 3.26 6.97 S5-6 3.64 3.64 6,552 25,400 3,512 4 8,341 8,302 3 3.0 2.80 2.81 19.08 SB-7 1.11 1.11 1,998 6,627 692 4 2,855 2,532 3 2.0 1.60 2.24 5.82 Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 20 647 Cu. Ft 3 Days SB-1 Skimmer Size Orifice Radius Orifice Diameter 3.0 Inch 1.3 Inch[es] 2.5 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 29 802 Cu. Ft 3 Days S B-2 Skimmer Size Orifice Radius Orifice Diameter 4.0 Inch 1.4 Inch[es] 2.8 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 8 693 Cu. Ft 3 Days S B-3 Skimmer Size Orifice Radius Orifice Diameter 2.0 Inch 0.9 Inch[es] 1.8 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 13 246 Cu. Ft 3 Days Skimmer Size Orifice Radius Orifice Diameter 2.5 Inch 1.1 Inch[es] 2.1 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 33 930 Cu. Ft 3 Days S B-5 Skimmer Size Orifice Radius Orifice Diameter 4.0 Inch 1.5 Inch[es] 3.0 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 25 400 Cu. Ft 3 Days Skimmer Size Orifice Radius Orifice Diameter 3.0 Inch 1.4 Inch[es] 2.8 Inch[es] Calculate Skimmer Size Basin Volume in Cubic Feet Days to Drain* NC assume 3 days to drain 6 627 Cu. Ft 3 Days S B-7 Skimmer Size Orifice Radius Orifice Diameter 2.0 Inch 0.8 Inch[es] 1.6 Inch[es] Temporary Slope Drain Calculations: SB-1A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 15.0 in 13.11 cfs Results Normal Depth 8.8 in Flow Area 0.7 ftz Wetted Perimeter 2.2 ft Hydraulic Radius 4.1 in Top Width 1.23 ft Critical Depth 14.7 in Percent Full 58.7 % Critical Slope 0.126 ft/ft Velocity 17.51 ft/s Velocity Head 4.76 ft Specific Energy 5.50 ft Froude Number 3.958 Maximum Discharge 21.72 cfs Discharge Full 20.19 cfs Slope Full 0.140 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 58.7 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 8.8 in Critical Depth 14.7 in Channel Slope 0.333 ft/ft Critical Slope 0.126 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-2A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 1.05 cfs Results Normal Depth 2.5 in Flow Area 0.1 ftz Wetted Perimeter 0.9 ft Hydraulic Radius 1.5 in Top Width 0.81 ft Critical Depth 5.2 in Percent Full 20.7 % Critical Slope 0.020 ft/ft Velocity 8.91 ft/s Velocity Head 1.23 ft Specific Energy 1.44 ft Froude Number 4.122 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.003 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 20.7 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 2.5 in Critical Depth 5.2 in Channel Slope 0.333 ft/ft Critical Slope 0.020 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-2B Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 15.0 in 15.15 cfs Results Normal Depth 9.7 in Flow Area 0.8 ftz Wetted Perimeter 2.3 ft Hydraulic Radius 4.3 in Top Width 1.20 ft Critical Depth 14.8 in Percent Full 64.7 % Critical Slope 0.172 ft/ft Velocity 18.05 ft/s Velocity Head 5.07 ft Specific Energy 5.87 ft Froude Number 3.798 Maximum Discharge 21.72 cfs Discharge Full 20.19 cfs Slope Full 0.187 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 64.7 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 9.7 in Critical Depth 14.8 in Channel Slope 0.333 ft/ft Critical Slope 0.172 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-3A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 1.57 cfs Results Normal Depth 3.0 in Flow Area 0.2 ftz Wetted Perimeter 1.1 ft Hydraulic Radius 1.8 in Top Width 0.87 ft Critical Depth 6.4 in Percent Full 25.4 % Critical Slope 0.022 ft/ft Velocity 10.02 ft/s Velocity Head 1.56 ft Specific Energy 1.81 ft Froude Number 4.161 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.007 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 25.4 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 3.0 in Critical Depth 6.4 in Channel Slope 0.333 ft/ft Critical Slope 0.022 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-3B Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 2.78 cfs Results Normal Depth 4.1 in Flow Area 0.2 ftz Wetted Perimeter 1.2 ft Hydraulic Radius 2.3 in Top Width 0.95 ft Critical Depth 8.6 in Percent Full 34.1 % Critical Slope 0.028 ft/ft Velocity 11.78 ft/s Velocity Head 2.16 ft Specific Energy 2.50 ft Froude Number 4.161 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.021 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 34.1 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 4.1 in Critical Depth 8.6 in Channel Slope 0.333 ft/ft Critical Slope 0.028 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-4A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 8.76 cfs Results Normal Depth 8.0 in Flow Area 0.6 ftz Wetted Perimeter 1.9 ft Hydraulic Radius 3.5 in Top Width 0.94 ft Critical Depth 11.9 in Percent Full 66.8 % Critical Slope 0.190 ft/ft Velocity 15.71 ft/s Velocity Head 3.84 ft Specific Energy 4.50 ft Froude Number 3.600 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.206 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 66.8 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 8.0 in Critical Depth 11.9 in Channel Slope 0.333 ft/ft Critical Slope 0.190 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-5A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 0.37 cfs Results Normal Depth 1.5 in Flow Area 0.1 ftz Wetted Perimeter 0.7 ft Hydraulic Radius 0.9 in Top Width 0.66 ft Critical Depth 3.0 in Percent Full 12.5 % Critical Slope 0.019 ft/ft Velocity 6.55 ft/s Velocity Head 0.67 ft Specific Energy 0.79 ft Froude Number 3.950 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.000 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 12.5 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 1.5 in Critical Depth 3.0 in Channel Slope 0.333 ft/ft Critical Slope 0.019 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-5B Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 4.56 cfs Results Normal Depth 5.4 in Flow Area 0.3 ftz Wetted Perimeter 1.5 ft Hydraulic Radius 2.8 in Top Width 0.99 ft Critical Depth 10.7 in Percent Full 44.6 % Critical Slope 0.050 ft/ft Velocity 13.46 ft/s Velocity Head 2.82 ft Specific Energy 3.26 ft Froude Number 4.066 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.056 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 44.6 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 5.4 in Critical Depth 10.7 in Channel Slope 0.333 ft/ft Critical Slope 0.050 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-6A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 15.0 in 12.43 cfs Results Normal Depth 8.5 in Flow Area 0.7 ftz Wetted Perimeter 2.1 ft Hydraulic Radius 4.0 in Top Width 1.24 ft Critical Depth 14.6 in Percent Full 56.7 % Critical Slope 0.112 ft/ft Velocity 17.30 ft/s Velocity Head 4.65 ft Specific Energy 5.36 ft Froude Number 4.004 Maximum Discharge 21.72 cfs Discharge Full 20.19 cfs Slope Full 0.126 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 56.7 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 8.5 in Critical Depth 14.6 in Channel Slope 0.333 ft/ft Critical Slope 0.112 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-6B Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 3.93 cfs Results Normal Depth 4.9 in Flow Area 0.3 ftz Wetted Perimeter 1.4 ft Hydraulic Radius 2.6 in Top Width 0.98 ft Critical Depth 10.1 in Percent Full 41.0 % Critical Slope 0.040 ft/ft Velocity 12.94 ft/s Velocity Head 2.60 ft Specific Energy 3.01 ft Froude Number 4.107 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.041 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 41.0 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 4.9 in Critical Depth 10.1 in Channel Slope 0.333 ft/ft Critical Slope 0.040 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-7A Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 4.19 cfs Results Normal Depth 5.1 in Flow Area 0.3 ftz Wetted Perimeter 1.4 ft Hydraulic Radius 2.7 in Top Width 0.99 ft Critical Depth 10.4 in Percent Full 42.5 % Critical Slope 0.043 ft/ft Velocity 13.18 ft/s Velocity Head 2.70 ft Specific Energy 3.12 ft Froude Number 4.096 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.047 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 42.5 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 5.1 in Critical Depth 10.4 in Channel Slope 0.333 ft/ft Critical Slope 0.043 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-7B Temp Slope Drain Project Description Friction Method Solve For Manning Formula Normal Depth Input Data Roughness Coefficient Channel Slope Diameter Discharge 0.024 0.333 ft/ft 12.0 in 0.31 cfs Results Normal Depth 1.4 in Flow Area 0.1 ftz Wetted Perimeter 0.7 ft Hydraulic Radius 0.9 in Top Width 0.64 ft Critical Depth 2.8 in Percent Full 11.5 % Critical Slope 0.019 ft/ft Velocity 6.20 ft/s Velocity Head 0.60 ft Specific Energy 0.71 ft Froude Number 3.901 Maximum Discharge 11.98 cfs Discharge Full 11.14 cfs Slope Full 0.000 ft/ft Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Average End Depth Over Rise 0.0 % Normal Depth Over Rise 11.5 % Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 1.4 in Critical Depth 2.8 in Channel Slope 0.333 ft/ft Critical Slope 0.019 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Sediment Basins Temp Pipes - The Bluffs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 Temporary Diversion Ditch Calculations: SB-1A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.034 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 13.11 cfs Results Normal Depth 6.4 in Flow Area 1.9 ftz Wetted Perimeter 5.4 ft Hydraulic Radius 4.3 in Top Width 5.18 ft Critical Depth 9.2 in Critical Slope 0.008 ft/ft Velocity 6.88 ft/s Velocity Head 0.74 ft Specific Energy 1.27 ft Froude Number 2.000 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 6.4 in Critical Depth 9.2 in Channel Slope 0.034 ft/ft Critical Slope 0.008 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs - The Bluffs.fm8 Center [10.03.00.03] 1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-2A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.073 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 1.05 cfs Results Normal Depth 1.3 in Flow Area 0.3 ftz Wetted Perimeter 2.7 ft Hydraulic Radius 1.1 in Top Width 2.65 ft Critical Depth 2.2 in Critical Slope 0.011 ft/ft Velocity 4.14 ft/s Velocity Head 0.27 ft Specific Energy 0.38 ft Froude Number 2.363 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 1.3 in Critical Depth 2.2 in Channel Slope 0.073 ft/ft Critical Slope 0.011 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-3A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.043 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 1.57 cfs Results Normal Depth 1.9 in Flow Area 0.4 ftz Wetted Perimeter 3.0 ft Hydraulic Radius 1.6 in Top Width 2.96 ft Critical Depth 2.8 in Critical Slope 0.010 ft/ft Velocity 3.98 ft/s Velocity Head 0.25 ft Specific Energy 0.41 ft Froude Number 1.919 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 1.9 in Critical Depth 2.8 in Channel Slope 0.043 ft/ft Critical Slope 0.010 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-3B Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.036 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 2.78 cfs Results Normal Depth 2.8 in Flow Area 0.6 ftz Wetted Perimeter 3.5 ft Hydraulic Radius 2.2 in Top Width 3.38 ft Critical Depth 4.0 in Critical Slope 0.010 ft/ft Velocity 4.48 ft/s Velocity Head 0.31 ft Specific Energy 0.54 ft Froude Number 1.847 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 2.8 in Critical Depth 4.0 in Channel Slope 0.036 ft/ft Critical Slope 0.010 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-4A-1 Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.047 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 8.76 cfs Results Normal Depth 4.8 in Flow Area 1.3 ftz Wetted Perimeter 4.5 ft Hydraulic Radius 3.4 in Top Width 4.39 ft Critical Depth 7.4 in Critical Slope 0.008 ft/ft Velocity 6.89 ft/s Velocity Head 0.74 ft Specific Energy 1.14 ft Froude Number 2.255 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 4.8 in Critical Depth 7.4 in Channel Slope 0.047 ft/ft Critical Slope 0.008 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-4A-2 Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.032 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 8.76 cfs Results Normal Depth 5.3 in Flow Area 1.5 ftz Wetted Perimeter 4.8 ft Hydraulic Radius 3.7 in Top Width 4.64 ft Critical Depth 7.4 in Critical Slope 0.008 ft/ft Velocity 6.01 ft/s Velocity Head 0.56 ft Specific Energy 1.00 ft Froude Number 1.888 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 5.3 in Critical Depth 7.4 in Channel Slope 0.032 ft/ft Critical Slope 0.008 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-4B Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.044 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 0.57 cfs Results Normal Depth 1.1 in Flow Area 0.2 ftz Wetted Perimeter 2.6 ft Hydraulic Radius 0.9 in Top Width 2.53 ft Critical Depth 1.5 in Critical Slope 0.012 ft/ft Velocity 2.85 ft/s Velocity Head 0.13 ft Specific Energy 0.21 ft Froude Number 1.784 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 1.1 in Critical Depth 1.5 in Channel Slope 0.044 ft/ft Critical Slope 0.012 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-5A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.058 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 0.37 cfs Results Normal Depth 0.8 in Flow Area 0.1 ftz Wetted Perimeter 2.4 ft Hydraulic Radius 0.7 in Top Width 2.38 ft Critical Depth 1.2 in Critical Slope 0.013 ft/ft Velocity 2.67 ft/s Velocity Head 0.11 ft Specific Energy 0.17 ft Froude Number 1.949 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 0.8 in Critical Depth 1.2 in Channel Slope 0.058 ft/ft Critical Slope 0.013 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-5B Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.075 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 4.56 cfs Results Normal Depth 3.0 in Flow Area 0.7 ftz Wetted Perimeter 3.6 ft Hydraulic Radius 2.3 in Top Width 3.48 ft Critical Depth 5.2 in Critical Slope 0.009 ft/ft Velocity 6.72 ft/s Velocity Head 0.70 ft Specific Energy 0.95 ft Froude Number 2.685 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 3.0 in Critical Depth 5.2 in Channel Slope 0.075 ft/ft Critical Slope 0.009 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-6A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.047 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 12.43 cfs Results Normal Depth 5.7 in Flow Area 1.6 ftz Wetted Perimeter 5.0 ft Hydraulic Radius 3.9 in Top Width 4.85 ft Critical Depth 8.9 in Critical Slope 0.008 ft/ft Velocity 7.62 ft/s Velocity Head 0.90 ft Specific Energy 1.38 ft Froude Number 2.319 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 5.7 in Critical Depth 8.9 in Channel Slope 0.047 ft/ft Critical Slope 0.008 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs - The Bluffs.fm8 Center [10.03.00.03] 1/26/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-7A Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.034 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 4.19 cfs Results Normal Depth 3.5 in Flow Area 0.8 ftz Wetted Perimeter 3.9 ft Hydraulic Radius 2.6 in Top Width 3.76 ft Critical Depth 5.0 in Critical Slope 0.009 ft/ft Velocity 4.95 ft/s Velocity Head 0.38 ft Specific Energy 0.67 ft Froude Number 1.841 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 3.5 in Critical Depth 5.0 in Channel Slope 0.034 ft/ft Critical Slope 0.009 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 SB-7B Ditch Project Description Friction Method Manning Formula Solve For Normal Depth Input Data Roughness Coefficient 0.020 Channel Slope 0.060 ft/ft Left Side Slope 3.000 H:V Right Side Slope 3.000 H:V Bottom Width 2.00 ft Discharge 0.31 cfs Results Normal Depth 0.7 in Flow Area 0.1 ftz Wetted Perimeter 2.4 ft Hydraulic Radius 0.6 in Top Width 2.34 ft Critical Depth 1.0 in Critical Slope 0.014 ft/ft Velocity 2.53 ft/s Velocity Head 0.10 ft Specific Energy 0.16 ft Froude Number 1.954 Flow Type Supercritical GVF Input Data Downstream Depth 0.0 in Length 0.0 ft Number Of Steps 0 GVF Output Data Upstream Depth 0.0 in Profile Description N/A Profile Headloss 0.00 ft Downstream Velocity Infinity ft/s Upstream Velocity Infinity ft/s Normal Depth 0.7 in Critical Depth 1.0 in Channel Slope 0.060 ft/ft Critical Slope 0.014 ft/ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Diversion Ditch Calcs.fm8 Center [10.03.00.03] 1/20/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 Pre Development Calculations: Project Name: The Bluffs at Wesley Chapel SITE DRAINAGE AREA - Time of Concentration Calcuations Sheet Flow LDI PN# 1021119 *T= [0.07 (n L) 0.8/(P2) 0.5 (S) 0.4] Max. Elevation: 612.5 Min. Elevation: 612 Flow Length (ft): 100 Slope: 0.50% Mannings (woods - light underbrush): 0.15 Precipitation (2yr, 24 hr): 3.6 Travel Time (hr)*: 0.27 Shallow Concentrated **UnPaved: V=16.1345(S)0.5 Max. Elevation: 612 Min. Elevation: 530 Flow Length (ft): 1130 Slope: 7.26% Velocity (fps)**: 4.35 Travel Time (hr): 0.07 Open Channel: Flow Length (ft): 3597 Velocity (fps): 5 Travel Time (hr): 0.20 TIME OF CONCENTRATION (hr): 0.5401 TIME OF CONCENTRATION (min): 32.41 2/28/2022 Union County PRE -AREA PRE -AREA Table of Contents Master Network Summary Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 2 yrs) Time -Depth Curve, 10 years (Union County - Synthetic Curve, 4 10 yrs) Time -Depth Curve, 25 years (Union County - Synthetic Curve, 6 25 yrs) Time -Depth Curve, 50 years (Union County - Synthetic Curve, 8 50 yrs) Time -Depth Curve, 100 years (Union County - Synthetic Curve, 10 100 yrs) Time of Concentration Calculations, 2 years (Union County - 12 Synthetic Curve, 2 yrs) Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 14 yrs) Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) PRE -AREA Union County - 2 96,874.000 12.250 16.82 Synthetic Curve, 2 yrs PRE -AREA Union County - 10 223,712.000 12.240 46.11 Synthetic Curve, 10 yrs PRE -AREA Union County - 25 316,675.000 12.240 67.52 Synthetic Curve, 25 yrs PRE -AREA Union County - 50 396,425.000 12.240 85.76 Synthetic Curve, 50 yrs PRE -AREA Union County - 100 490,633.000 12.240 107.16 Synthetic Curve, 100 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 2 96,874.000 12.250 16.82 Synthetic Curve, 2 yrs OUTFALL Union County - 10 223,712.000 12.240 46.11 Synthetic Curve, 10 yrs OUTFALL Union County - 25 316,675.000 12.240 67.52 Synthetic Curve, 25 yrs OUTFALL Union County - 50 396,425.000 12.240 85.76 Synthetic Curve, 50 yrs OUTFALL Union County - 100 490,633.000 12.240 107.16 Synthetic Curve, 100 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 2 yrs Time -Depth Curve: TypeII 24hr (3.6 in) Label TypeII 24hr (3.6 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 2 years Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.1 0.1 0.1 0.1 3.000 0.1 0.1 0.1 0.1 0.1 3.500 0.1 0.2 0.2 0.2 0.2 4.000 0.2 0.2 0.2 0.2 0.2 4.500 0.2 0.2 0.2 0.2 0.2 5.000 0.2 0.2 0.2 0.2 0.3 5.500 0.3 0.3 0.3 0.3 0.3 6.000 0.3 0.3 0.3 0.3 0.3 6.500 0.3 0.3 0.3 0.3 0.3 7.000 0.4 0.4 0.4 0.4 0.4 7.500 0.4 0.4 0.4 0.4 0.4 8.000 0.4 0.4 0.4 0.5 0.5 8.500 0.5 0.5 0.5 0.5 0.5 9.000 0.5 0.5 0.6 0.6 0.6 9.500 0.6 0.6 0.6 0.6 0.6 10.000 0.7 0.7 0.7 0.7 0.7 10.500 0.7 0.8 0.8 0.8 0.8 11.000 0.8 0.9 0.9 0.9 1.0 11.500 1.0 1.1 1.3 1.6 2.0 12.000 2.4 2.5 2.5 2.6 2.6 12.500 2.6 2.7 2.7 2.7 2.8 13.000 2.8 2.8 2.8 2.8 2.9 13.500 2.9 2.9 2.9 2.9 2.9 14.000 3.0 3.0 3.0 3.0 3.0 14.500 3.0 3.0 3.0 3.1 3.1 15.000 3.1 3.1 3.1 3.1 3.1 15.500 3.1 3.1 3.1 3.2 3.2 16.000 3.2 3.2 3.2 3.2 3.2 16.500 3.2 3.2 3.2 3.2 3.2 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 2 years Label: Union County Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 3.2 3.3 3.3 3.3 3.3 17.500 3.3 3.3 3.3 3.3 3.3 18.000 3.3 3.3 3.3 3.3 3.3 18.500 3.3 3.4 3.4 3.4 3.4 19.000 3.4 3.4 3.4 3.4 3.4 19.500 3.4 3.4 3.4 3.4 3.4 20.000 3.4 3.4 3.4 3.4 3.4 20.500 3.5 3.5 3.5 3.5 3.5 21.000 3.5 3.5 3.5 3.5 3.5 21.500 3.5 3.5 3.5 3.5 3.5 22.000 3.5 3.5 3.5 3.5 3.5 22.500 3.5 3.5 3.5 3.6 3.6 23.000 3.6 3.6 3.6 3.6 3.6 23.500 3.6 3.6 3.6 3.6 3.6 24.000 3.6 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 10 yrs Time -Depth Curve: TypeII 24hr (5.2 in) Label TypeII 24hr (5.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 10 years Return Event: 10 years Storm Event: TypeII 24hr (5.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.2 0.2 0.2 0.2 0.2 4.000 0.2 0.3 0.3 0.3 0.3 4.500 0.3 0.3 0.3 0.3 0.3 5.000 0.3 0.3 0.3 0.4 0.4 5.500 0.4 0.4 0.4 0.4 0.4 6.000 0.4 0.4 0.4 0.4 0.5 6.500 0.5 0.5 0.5 0.5 0.5 7.000 0.5 0.5 0.5 0.5 0.6 7.500 0.6 0.6 0.6 0.6 0.6 8.000 0.6 0.6 0.6 0.7 0.7 8.500 0.7 0.7 0.7 0.7 0.7 9.000 0.8 0.8 0.8 0.8 0.8 9.500 0.8 0.9 0.9 0.9 0.9 10.000 0.9 1.0 1.0 1.0 1.0 10.500 1.1 1.1 1.1 1.2 1.2 11.000 1.2 1.3 1.3 1.4 1.4 11.500 1.5 1.6 1.8 2.2 3.0 12.000 3.4 3.5 3.6 3.7 3.8 12.500 3.8 3.9 3.9 3.9 4.0 13.000 4.0 4.0 4.1 4.1 4.1 13.500 4.2 4.2 4.2 4.2 4.2 14.000 4.3 4.3 4.3 4.3 4.3 14.500 4.4 4.4 4.4 4.4 4.4 15.000 4.4 4.5 4.5 4.5 4.5 15.500 4.5 4.5 4.5 4.6 4.6 16.000 4.6 4.6 4.6 4.6 4.6 16.500 4.6 4.6 4.7 4.7 4.7 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 10 years Label: Union County Storm Event: TypeII 24hr (5.2 in) Scenario: Union County - Synthetic Curve, 10 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 4.7 4.7 4.7 4.7 4.7 17.500 4.7 4.8 4.8 4.8 4.8 18.000 4.8 4.8 4.8 4.8 4.8 18.500 4.8 4.8 4.9 4.9 4.9 19.000 4.9 4.9 4.9 4.9 4.9 19.500 4.9 4.9 4.9 4.9 4.9 20.000 5.0 5.0 5.0 5.0 5.0 20.500 5.0 5.0 5.0 5.0 5.0 21.000 5.0 5.0 5.0 5.0 5.0 21.500 5.0 5.1 5.1 5.1 5.1 22.000 5.1 5.1 5.1 5.1 5.1 22.500 5.1 5.1 5.1 5.1 5.1 23.000 5.1 5.1 5.2 5.2 5.2 23.500 5.2 5.2 5.2 5.2 5.2 24.000 5.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 25 yrs Time -Depth Curve: TypeII 24hr (6.2 in) Label TypeII 24hr (6.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 25 years Return Event: 25 years Storm Event: TypeII 24hr (6.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.3 0.3 0.3 4.500 0.3 0.4 0.4 0.4 0.4 5.000 0.4 0.4 0.4 0.4 0.4 5.500 0.4 0.5 0.5 0.5 0.5 6.000 0.5 0.5 0.5 0.5 0.5 6.500 0.6 0.6 0.6 0.6 0.6 7.000 0.6 0.6 0.6 0.7 0.7 7.500 0.7 0.7 0.7 0.7 0.7 8.000 0.7 0.8 0.8 0.8 0.8 8.500 0.8 0.8 0.9 0.9 0.9 9.000 0.9 0.9 1.0 1.0 1.0 9.500 1.0 1.0 1.1 1.1 1.1 10.000 1.1 1.1 1.2 1.2 1.2 10.500 1.3 1.3 1.3 1.4 1.4 11.000 1.5 1.5 1.6 1.6 1.7 11.500 1.8 1.9 2.2 2.7 3.5 12.000 4.1 4.2 4.3 4.4 4.5 12.500 4.6 4.6 4.7 4.7 4.7 13.000 4.8 4.8 4.9 4.9 4.9 13.500 5.0 5.0 5.0 5.0 5.1 14.000 5.1 5.1 5.1 5.2 5.2 14.500 5.2 5.2 5.2 5.3 5.3 15.000 5.3 5.3 5.3 5.3 5.4 15.500 5.4 5.4 5.4 5.4 5.4 16.000 5.5 5.5 5.5 5.5 5.5 16.500 5.5 5.5 5.6 5.6 5.6 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 25 years Label: Union County Storm Event: TypeII 24hr (6.2 in) Scenario: Union County - Synthetic Curve, 25 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 5.6 5.6 5.6 5.6 5.6 17.500 5.7 5.7 5.7 5.7 5.7 18.000 5.7 5.7 5.7 5.7 5.8 18.500 5.8 5.8 5.8 5.8 5.8 19.000 5.8 5.8 5.8 5.8 5.9 19.500 5.9 5.9 5.9 5.9 5.9 20.000 5.9 5.9 5.9 5.9 5.9 20.500 5.9 6.0 6.0 6.0 6.0 21.000 6.0 6.0 6.0 6.0 6.0 21.500 6.0 6.0 6.0 6.0 6.0 22.000 6.1 6.1 6.1 6.1 6.1 22.500 6.1 6.1 6.1 6.1 6.1 23.000 6.1 6.1 6.1 6.2 6.2 23.500 6.2 6.2 6.2 6.2 6.2 24.000 6.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 50 yrs Time -Depth Curve: TypeII 24hr (7.0 in) Label TypeII 24hr (7.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 50 years Return Event: 50 years Storm Event: TypeII 24hr (7.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.4 0.4 0.4 4.500 0.4 0.4 0.4 0.4 0.4 5.000 0.4 0.5 0.5 0.5 0.5 5.500 0.5 0.5 0.5 0.5 0.5 6.000 0.6 0.6 0.6 0.6 0.6 6.500 0.6 0.6 0.7 0.7 0.7 7.000 0.7 0.7 0.7 0.7 0.8 7.500 0.8 0.8 0.8 0.8 0.8 8.000 0.8 0.9 0.9 0.9 0.9 8.500 0.9 0.9 1.0 1.0 1.0 9.000 1.0 1.1 1.1 1.1 1.1 9.500 1.1 1.2 1.2 1.2 1.2 10.000 1.3 1.3 1.3 1.4 1.4 10.500 1.4 1.5 1.5 1.5 1.6 11.000 1.6 1.7 1.8 1.8 1.9 11.500 2.0 2.1 2.5 3.0 4.0 12.000 4.6 4.8 4.9 5.0 5.1 12.500 5.1 5.2 5.3 5.3 5.4 13.000 5.4 5.4 5.5 5.5 5.6 13.500 5.6 5.6 5.7 5.7 5.7 14.000 5.7 5.8 5.8 5.8 5.8 14.500 5.9 5.9 5.9 5.9 6.0 15.000 6.0 6.0 6.0 6.0 6.1 15.500 6.1 6.1 6.1 6.1 6.1 16.000 6.2 6.2 6.2 6.2 6.2 16.500 6.2 6.3 6.3 6.3 6.3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 50 years Label: Union County Storm Event: TypeII 24hr (7.0 in) Scenario: Union County - Synthetic Curve, 50 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 6.3 6.3 6.3 6.4 6.4 17.500 6.4 6.4 6.4 6.4 6.4 18.000 6.4 6.5 6.5 6.5 6.5 18.500 6.5 6.5 6.5 6.5 6.6 19.000 6.6 6.6 6.6 6.6 6.6 19.500 6.6 6.6 6.6 6.6 6.7 20.000 6.7 6.7 6.7 6.7 6.7 20.500 6.7 6.7 6.7 6.7 6.7 21.000 6.8 6.8 6.8 6.8 6.8 21.500 6.8 6.8 6.8 6.8 6.8 22.000 6.8 6.8 6.9 6.9 6.9 22.500 6.9 6.9 6.9 6.9 6.9 23.000 6.9 6.9 6.9 6.9 7.0 23.500 7.0 7.0 7.0 7.0 7.0 24.000 7.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 100 yrs Time -Depth Curve: TypeII 24hr (7.9 in) Label TypeII 24hr (7.9 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 100 years Return Event: 100 years Storm Event: TypeII 24hr (7.9 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.2 0.2 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.3 0.3 3.000 0.3 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.4 0.4 4.000 0.4 0.4 0.4 0.4 0.4 4.500 0.4 0.4 0.5 0.5 0.5 5.000 0.5 0.5 0.5 0.5 0.5 5.500 0.6 0.6 0.6 0.6 0.6 6.000 0.6 0.6 0.7 0.7 0.7 6.500 0.7 0.7 0.7 0.8 0.8 7.000 0.8 0.8 0.8 0.8 0.8 7.500 0.9 0.9 0.9 0.9 0.9 8.000 0.9 1.0 1.0 1.0 1.0 8.500 1.0 1.1 1.1 1.1 1.1 9.000 1.2 1.2 1.2 1.2 1.3 9.500 1.3 1.3 1.3 1.4 1.4 10.000 1.4 1.5 1.5 1.5 1.6 10.500 1.6 1.7 1.7 1.7 1.8 11.000 1.9 1.9 2.0 2.1 2.1 11.500 2.2 2.4 2.8 3.4 4.5 12.000 5.2 5.4 5.5 5.6 5.7 12.500 5.8 5.9 5.9 6.0 6.0 13.000 6.1 6.1 6.2 6.2 6.3 13.500 6.3 6.3 6.4 6.4 6.4 14.000 6.5 6.5 6.5 6.6 6.6 14.500 6.6 6.6 6.7 6.7 6.7 15.000 6.7 6.8 6.8 6.8 6.8 15.500 6.9 6.9 6.9 6.9 6.9 16.000 7.0 7.0 7.0 7.0 7.0 16.500 7.0 7.1 7.1 7.1 7.1 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 100 years Label: Union County Storm Event: TypeII 24hr (7.9 in) Scenario: Union County - Synthetic Curve, 100 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 7.1 7.1 7.2 7.2 7.2 17.500 7.2 7.2 7.2 7.2 7.3 18.000 7.3 7.3 7.3 7.3 7.3 18.500 7.3 7.4 7.4 7.4 7.4 19.000 7.4 7.4 7.4 7.4 7.5 19.500 7.5 7.5 7.5 7.5 7.5 20.000 7.5 7.5 7.5 7.6 7.6 20.500 7.6 7.6 7.6 7.6 7.6 21.000 7.6 7.6 7.6 7.7 7.7 21.500 7.7 7.7 7.7 7.7 7.7 22.000 7.7 7.7 7.7 7.7 7.8 22.500 7.8 7.8 7.8 7.8 7.8 23.000 7.8 7.8 7.8 7.8 7.8 23.500 7.9 7.9 7.9 7.9 7.9 24.000 7.9 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: PRE -AREA Scenario: Union County - Synthetic Curve, 2 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.540 hours Time of Concentration (Composite) Time of Concentration 0.540 hours (Composite) Bentley Systems, Inc. Haestad Methods Solution Pre Development - Total.ppc Center 2/28/2022 27 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Pond Pack CONNECT Edition [10.02.00.01] Page 12 of 15 Subsection: Time of Concentration Calculations Return Event: 2 years Label: PRE -AREA Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs ___= User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Runoff CN-Area Label: PRE -AREA Scenario: Union County - Synthetic Curve, 2 yrs Runoff Curve Number Data Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Woods - good - Soil B 55.000 23.189 0.0 0.0 55.000 Woods - good - Soil D 77.000 14.458 0.0 0.0 77.000 COMPOSITE AREA & WEIGHTED CN ---> (N/A) 37.647 (N/A) (N/A) 63.449 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 15 Watertown, CT 06795 USA +1-203-755-1666 Index Master Network Summary ... 1 PRE -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 14 PRE -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic Curve, 2 yrs))... 12, 13 U Union County (Time -Depth Curve, 10 years (Union County - Synthetic Curve, 10 yrs))... 4, 5 Union County (Time -Depth Curve, 100 years (Union County - Synthetic Curve, 100 yrs))... 10, 11 Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 2, 3 Union County (Time -Depth Curve, 25 years (Union County - Synthetic Curve, 25 yrs))... 6, 7 Union County (Time -Depth Curve, 50 years (Union County - Synthetic Curve, 50 yrs))... 8, 9 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Pre Development - Total.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 15 Watertown, CT 06795 USA +1-203-755-1666 Post Development Calculations: Table of Contents Master Network Summary 1 Union County Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 2 yrs) Time -Depth Curve, 10 years (Union County - Synthetic Curve, 4 10 yrs) Time -Depth Curve, 25 years (Union County - Synthetic Curve, 6 25 yrs) Time -Depth Curve, 50 years (Union County - Synthetic Curve, 8 50 yrs) Time -Depth Curve, 100 years (Union County - Synthetic Curve, 10 100 yrs) POST-UNDETAINED Time of Concentration Calculations, 2 years (Union County - 12 Synthetic Curve, 2 yrs) POST-UNDETAINED YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 14 Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) POST-UNDETAINED Union County - 2 45,835.000 12.120 10.74 Synthetic Curve, 2 yrs POST-UNDETAINED Union County - 10 110,506.000 12.080 30.92 Synthetic Curve, 10 yrs POST-UNDETAINED Union County - 25 158,671.000 12.080 46.23 Synthetic Curve, 25 yrs POST-UNDETAINED Union County - 50 200,290.000 12.080 59.36 Synthetic Curve, 50 yrs POST-UNDETAINED Union County - 100 249,709.000 12.080 74.83 Synthetic Curve, 100 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 2 45,835.000 12.120 10.74 Synthetic Curve, 2 yrs OUTFALL Union County - 10 110,506.000 12.080 30.92 Synthetic Curve, 10 yrs OUTFALL Union County - 25 158,671.000 12.080 46.23 Synthetic Curve, 25 yrs OUTFALL Union County - 50 200,290.000 12.080 59.36 Synthetic Curve, 50 yrs OUTFALL Union County - 100 249,709.000 12.080 74.83 Synthetic Curve, 100 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 2 yrs Time -Depth Curve: TypeII 24hr (3.6 in) Label TypeII 24hr (3.6 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 2 years Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.1 0.1 0.1 0.1 3.000 0.1 0.1 0.1 0.1 0.1 3.500 0.1 0.2 0.2 0.2 0.2 4.000 0.2 0.2 0.2 0.2 0.2 4.500 0.2 0.2 0.2 0.2 0.2 5.000 0.2 0.2 0.2 0.2 0.3 5.500 0.3 0.3 0.3 0.3 0.3 6.000 0.3 0.3 0.3 0.3 0.3 6.500 0.3 0.3 0.3 0.3 0.3 7.000 0.4 0.4 0.4 0.4 0.4 7.500 0.4 0.4 0.4 0.4 0.4 8.000 0.4 0.4 0.4 0.5 0.5 8.500 0.5 0.5 0.5 0.5 0.5 9.000 0.5 0.5 0.6 0.6 0.6 9.500 0.6 0.6 0.6 0.6 0.6 10.000 0.7 0.7 0.7 0.7 0.7 10.500 0.7 0.8 0.8 0.8 0.8 11.000 0.8 0.9 0.9 0.9 1.0 11.500 1.0 1.1 1.3 1.6 2.0 12.000 2.4 2.5 2.5 2.6 2.6 12.500 2.6 2.7 2.7 2.7 2.8 13.000 2.8 2.8 2.8 2.8 2.9 13.500 2.9 2.9 2.9 2.9 2.9 14.000 3.0 3.0 3.0 3.0 3.0 14.500 3.0 3.0 3.0 3.1 3.1 15.000 3.1 3.1 3.1 3.1 3.1 15.500 3.1 3.1 3.1 3.2 3.2 16.000 3.2 3.2 3.2 3.2 3.2 16.500 3.2 3.2 3.2 3.2 3.2 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 2 years Label: Union County Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 3.2 3.3 3.3 3.3 3.3 17.500 3.3 3.3 3.3 3.3 3.3 18.000 3.3 3.3 3.3 3.3 3.3 18.500 3.3 3.4 3.4 3.4 3.4 19.000 3.4 3.4 3.4 3.4 3.4 19.500 3.4 3.4 3.4 3.4 3.4 20.000 3.4 3.4 3.4 3.4 3.4 20.500 3.5 3.5 3.5 3.5 3.5 21.000 3.5 3.5 3.5 3.5 3.5 21.500 3.5 3.5 3.5 3.5 3.5 22.000 3.5 3.5 3.5 3.5 3.5 22.500 3.5 3.5 3.5 3.6 3.6 23.000 3.6 3.6 3.6 3.6 3.6 23.500 3.6 3.6 3.6 3.6 3.6 24.000 3.6 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 10 yrs Time -Depth Curve: TypeII 24hr (5.2 in) Label TypeII 24hr (5.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 10 years Return Event: 10 years Storm Event: TypeII 24hr (5.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.2 0.2 0.2 0.2 0.2 4.000 0.2 0.3 0.3 0.3 0.3 4.500 0.3 0.3 0.3 0.3 0.3 5.000 0.3 0.3 0.3 0.4 0.4 5.500 0.4 0.4 0.4 0.4 0.4 6.000 0.4 0.4 0.4 0.4 0.5 6.500 0.5 0.5 0.5 0.5 0.5 7.000 0.5 0.5 0.5 0.5 0.6 7.500 0.6 0.6 0.6 0.6 0.6 8.000 0.6 0.6 0.6 0.7 0.7 8.500 0.7 0.7 0.7 0.7 0.7 9.000 0.8 0.8 0.8 0.8 0.8 9.500 0.8 0.9 0.9 0.9 0.9 10.000 0.9 1.0 1.0 1.0 1.0 10.500 1.1 1.1 1.1 1.2 1.2 11.000 1.2 1.3 1.3 1.4 1.4 11.500 1.5 1.6 1.8 2.2 3.0 12.000 3.4 3.5 3.6 3.7 3.8 12.500 3.8 3.9 3.9 3.9 4.0 13.000 4.0 4.0 4.1 4.1 4.1 13.500 4.2 4.2 4.2 4.2 4.2 14.000 4.3 4.3 4.3 4.3 4.3 14.500 4.4 4.4 4.4 4.4 4.4 15.000 4.4 4.5 4.5 4.5 4.5 15.500 4.5 4.5 4.5 4.6 4.6 16.000 4.6 4.6 4.6 4.6 4.6 16.500 4.6 4.6 4.7 4.7 4.7 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 10 years Label: Union County Storm Event: TypeII 24hr (5.2 in) Scenario: Union County - Synthetic Curve, 10 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 4.7 4.7 4.7 4.7 4.7 17.500 4.7 4.8 4.8 4.8 4.8 18.000 4.8 4.8 4.8 4.8 4.8 18.500 4.8 4.8 4.9 4.9 4.9 19.000 4.9 4.9 4.9 4.9 4.9 19.500 4.9 4.9 4.9 4.9 4.9 20.000 5.0 5.0 5.0 5.0 5.0 20.500 5.0 5.0 5.0 5.0 5.0 21.000 5.0 5.0 5.0 5.0 5.0 21.500 5.0 5.1 5.1 5.1 5.1 22.000 5.1 5.1 5.1 5.1 5.1 22.500 5.1 5.1 5.1 5.1 5.1 23.000 5.1 5.1 5.2 5.2 5.2 23.500 5.2 5.2 5.2 5.2 5.2 24.000 5.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 25 yrs Time -Depth Curve: TypeII 24hr (6.2 in) Label TypeII 24hr (6.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 25 years Return Event: 25 years Storm Event: TypeII 24hr (6.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.3 0.3 0.3 4.500 0.3 0.4 0.4 0.4 0.4 5.000 0.4 0.4 0.4 0.4 0.4 5.500 0.4 0.5 0.5 0.5 0.5 6.000 0.5 0.5 0.5 0.5 0.5 6.500 0.6 0.6 0.6 0.6 0.6 7.000 0.6 0.6 0.6 0.7 0.7 7.500 0.7 0.7 0.7 0.7 0.7 8.000 0.7 0.8 0.8 0.8 0.8 8.500 0.8 0.8 0.9 0.9 0.9 9.000 0.9 0.9 1.0 1.0 1.0 9.500 1.0 1.0 1.1 1.1 1.1 10.000 1.1 1.1 1.2 1.2 1.2 10.500 1.3 1.3 1.3 1.4 1.4 11.000 1.5 1.5 1.6 1.6 1.7 11.500 1.8 1.9 2.2 2.7 3.5 12.000 4.1 4.2 4.3 4.4 4.5 12.500 4.6 4.6 4.7 4.7 4.7 13.000 4.8 4.8 4.9 4.9 4.9 13.500 5.0 5.0 5.0 5.0 5.1 14.000 5.1 5.1 5.1 5.2 5.2 14.500 5.2 5.2 5.2 5.3 5.3 15.000 5.3 5.3 5.3 5.3 5.4 15.500 5.4 5.4 5.4 5.4 5.4 16.000 5.5 5.5 5.5 5.5 5.5 16.500 5.5 5.5 5.6 5.6 5.6 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 25 years Label: Union County Storm Event: TypeII 24hr (6.2 in) Scenario: Union County - Synthetic Curve, 25 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 5.6 5.6 5.6 5.6 5.6 17.500 5.7 5.7 5.7 5.7 5.7 18.000 5.7 5.7 5.7 5.7 5.8 18.500 5.8 5.8 5.8 5.8 5.8 19.000 5.8 5.8 5.8 5.8 5.9 19.500 5.9 5.9 5.9 5.9 5.9 20.000 5.9 5.9 5.9 5.9 5.9 20.500 5.9 6.0 6.0 6.0 6.0 21.000 6.0 6.0 6.0 6.0 6.0 21.500 6.0 6.0 6.0 6.0 6.0 22.000 6.1 6.1 6.1 6.1 6.1 22.500 6.1 6.1 6.1 6.1 6.1 23.000 6.1 6.1 6.1 6.2 6.2 23.500 6.2 6.2 6.2 6.2 6.2 24.000 6.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 50 yrs Time -Depth Curve: TypeII 24hr (7.0 in) Label TypeII 24hr (7.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 50 years Return Event: 50 years Storm Event: TypeII 24hr (7.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.4 0.4 0.4 4.500 0.4 0.4 0.4 0.4 0.4 5.000 0.4 0.5 0.5 0.5 0.5 5.500 0.5 0.5 0.5 0.5 0.5 6.000 0.6 0.6 0.6 0.6 0.6 6.500 0.6 0.6 0.7 0.7 0.7 7.000 0.7 0.7 0.7 0.7 0.8 7.500 0.8 0.8 0.8 0.8 0.8 8.000 0.8 0.9 0.9 0.9 0.9 8.500 0.9 0.9 1.0 1.0 1.0 9.000 1.0 1.1 1.1 1.1 1.1 9.500 1.1 1.2 1.2 1.2 1.2 10.000 1.3 1.3 1.3 1.4 1.4 10.500 1.4 1.5 1.5 1.5 1.6 11.000 1.6 1.7 1.8 1.8 1.9 11.500 2.0 2.1 2.5 3.0 4.0 12.000 4.6 4.8 4.9 5.0 5.1 12.500 5.1 5.2 5.3 5.3 5.4 13.000 5.4 5.4 5.5 5.5 5.6 13.500 5.6 5.6 5.7 5.7 5.7 14.000 5.7 5.8 5.8 5.8 5.8 14.500 5.9 5.9 5.9 5.9 6.0 15.000 6.0 6.0 6.0 6.0 6.1 15.500 6.1 6.1 6.1 6.1 6.1 16.000 6.2 6.2 6.2 6.2 6.2 16.500 6.2 6.3 6.3 6.3 6.3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 50 years Label: Union County Storm Event: TypeII 24hr (7.0 in) Scenario: Union County - Synthetic Curve, 50 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 6.3 6.3 6.3 6.4 6.4 17.500 6.4 6.4 6.4 6.4 6.4 18.000 6.4 6.5 6.5 6.5 6.5 18.500 6.5 6.5 6.5 6.5 6.6 19.000 6.6 6.6 6.6 6.6 6.6 19.500 6.6 6.6 6.6 6.6 6.7 20.000 6.7 6.7 6.7 6.7 6.7 20.500 6.7 6.7 6.7 6.7 6.7 21.000 6.8 6.8 6.8 6.8 6.8 21.500 6.8 6.8 6.8 6.8 6.8 22.000 6.8 6.8 6.9 6.9 6.9 22.500 6.9 6.9 6.9 6.9 6.9 23.000 6.9 6.9 6.9 6.9 7.0 23.500 7.0 7.0 7.0 7.0 7.0 24.000 7.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 100 yrs Time -Depth Curve: TypeII 24hr (7.9 in) Label TypeII 24hr (7.9 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 100 years Return Event: 100 years Storm Event: TypeII 24hr (7.9 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.2 0.2 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.3 0.3 3.000 0.3 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.4 0.4 4.000 0.4 0.4 0.4 0.4 0.4 4.500 0.4 0.4 0.5 0.5 0.5 5.000 0.5 0.5 0.5 0.5 0.5 5.500 0.6 0.6 0.6 0.6 0.6 6.000 0.6 0.6 0.7 0.7 0.7 6.500 0.7 0.7 0.7 0.8 0.8 7.000 0.8 0.8 0.8 0.8 0.8 7.500 0.9 0.9 0.9 0.9 0.9 8.000 0.9 1.0 1.0 1.0 1.0 8.500 1.0 1.1 1.1 1.1 1.1 9.000 1.2 1.2 1.2 1.2 1.3 9.500 1.3 1.3 1.3 1.4 1.4 10.000 1.4 1.5 1.5 1.5 1.6 10.500 1.6 1.7 1.7 1.7 1.8 11.000 1.9 1.9 2.0 2.1 2.1 11.500 2.2 2.4 2.8 3.4 4.5 12.000 5.2 5.4 5.5 5.6 5.7 12.500 5.8 5.9 5.9 6.0 6.0 13.000 6.1 6.1 6.2 6.2 6.3 13.500 6.3 6.3 6.4 6.4 6.4 14.000 6.5 6.5 6.5 6.6 6.6 14.500 6.6 6.6 6.7 6.7 6.7 15.000 6.7 6.8 6.8 6.8 6.8 15.500 6.9 6.9 6.9 6.9 6.9 16.000 7.0 7.0 7.0 7.0 7.0 16.500 7.0 7.1 7.1 7.1 7.1 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 100 years Label: Union County Storm Event: TypeII 24hr (7.9 in) Scenario: Union County - Synthetic Curve, 100 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 7.1 7.1 7.2 7.2 7.2 17.500 7.2 7.2 7.2 7.2 7.3 18.000 7.3 7.3 7.3 7.3 7.3 18.500 7.3 7.4 7.4 7.4 7.4 19.000 7.4 7.4 7.4 7.4 7.5 19.500 7.5 7.5 7.5 7.5 7.5 20.000 7.5 7.5 7.5 7.6 7.6 20.500 7.6 7.6 7.6 7.6 7.6 21.000 7.6 7.6 7.6 7.7 7.7 21.500 7.7 7.7 7.7 7.7 7.7 22.000 7.7 7.7 7.7 7.7 7.8 22.500 7.8 7.8 7.8 7.8 7.8 23.000 7.8 7.8 7.8 7.8 7.8 23.500 7.9 7.9 7.9 7.9 7.9 24.000 7.9 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 15 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: POST-UNDETAINED Scenario: Union County - Synthetic Curve, 2 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.313 hours Time of Concentration (Composite) Time of Concentration 0.313 hours (Composite) Bentley Systems, Inc. Haestad Methods Solution Post Development - Total Undetained.ppc Center 2/28/2022 27 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Pond Pack CONNECT Edition [10.02.00.01] Page 12 of 15 Subsection: Time of Concentration Calculations Label: POST-UNDETAINED Scenario: Union County - Synthetic Curve, 2 yrs ==== User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Post Development - Total Undetained.ppc Center 2/28/2022 27 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Pond Pack CONNECT Edition [10.02.00.01] Page 13 of 15 Subsection: Runoff CN-Area Label: POST-UNDETAINED Scenario: Union County - Synthetic Curve, 2 yrs Runoff Curve Number Data Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Open space (Lawns,parks etc.) - Good 61.000 20.421 0.0 0.0 61.000 condition; grass cover > 75% - Soil B COMPOSITE AREA & WEIGHTED CN ---> (N/A) 20.421 (N/A) (N/A) 61.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 15 Watertown, CT 06795 USA +1-203-755-1666 Index Master Network Summary ... 1 POST-UNDETAINED (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 14 POST-UNDETAINED (Time of Concentration Calculations, 2 years (Union County - Synthetic Curve, 2 yrs))... 12, 13 U Union County (Time -Depth Curve, 10 years (Union County - Synthetic Curve, 10 yrs))... 4, 5 Union County (Time -Depth Curve, 100 years (Union County - Synthetic Curve, 100 yrs))... 10, 11 Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 2, 3 Union County (Time -Depth Curve, 25 years (Union County - Synthetic Curve, 25 yrs))... 6, 7 Union County (Time -Depth Curve, 50 years (Union County - Synthetic Curve, 50 yrs))... 8, 9 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition Post Development - Total Undetained.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 15 Watertown, CT 06795 USA +1-203-755-1666 BMP-1 Calculations: Project Name: The Bluffs at Wesley Chapel Project Number: 1021119 Design Requirements: 85% TSS REMOVAL Given Information: Land Use: Residential Drainage Area to Facility (Acres): 5.45 Meck. County (Minimum 10 Ac. Less than 10 Ac requires water balance computations) Impervious Area (Acres): 2.98 Percent Impervious: 54.7% Soil Type: ChA, GsE, TbB2 Soil Group: B/D Curve Number (CN) Pre: 63 Curve Number (CN) Post: 81 Time of Concentration Pre (hour): 0.540 Time of Concentration Post (hour): 0.083 Design Storm Rainfall Depth (in): 1.0 (Typically 1") Detention Time (Day): 2 Meck. County: 4 days - 85% TSS & 70% TP (Optimal Efficiency) 2 days - 60% TSS & 40% TP (Standard Efficiency) 4 days - 85% TSS & 0% TP (TSS - Only Efficiency) NCDENR: 2 - 5 days - 85% TSS & 40% TP Watershed: Mountain and Piedmont (85% TSS) Efficiency: NCDEN R Wet Pond Design (NCDENR - 2007) Project Name: The Bluffs at Wesley Chapel Job Number: 1021119 Step 1: Compute the water quality volume (WQV). WQv (Ft) = (3630) X (RD) X (Rv) X (AD) Where: WQV = Water Quality Volume (Ft) AD = Drainage Area to Wet Pond (acres). Rv= Volumetric Runoff Coefficient = 0.05 + 0.9 (% Impervious) Rp = Design Storm Rainfall Depth (in). Typically 1.0". Percent Impervious = 55% AD = 5.45 acres RD= 1.0 in Rv = 0.54 WQv = 10,725 Ft3 Step 2: Determine Surface Area Requirements. Average Permanent Pool Depth = 3.26 Feet Percent Impervious = 55% SA / DA Ratio = 2.06 Required Surface Area = 4,890 Ft2 Step 3: Preliminary Temporary Water Quality Drawdown Calculations Pond Height above Orifice = 570.81 feet Orifice Invert Elevation = 569.00 feet Pond Surface Area at Height Above Orifice = 7,876 square feet Pond Surface Area at Orifice Invert Elevation = 5,346 square feet Orifice Diameter (D) = 1.50 inches = 0.13 feet Orifice Area (a) = 0.0123 square feet Average Surface Area (A) = 6,611 square feet Gravitational Constatnt (g) = 32.2 ft/sec2 Head (H) = 1.75 feet Discharge Coefficient (C) = 0.6 Time (t) = 295,802 seconds = 3.42 days Note: The above calculation is based on the Bernoulli Equation where: t ° x (0 - H°.5 ; x a x (2g)) Step 4: Compute Site Hydraulic Input Parameters. Condition Area (Ac) CN Tc (hours) Pre -developed 37.65 63 0.54 Post -developed 5.45 81 0.083 Results Condition Q1-year Q10-year Q25-year Q50-year Pre -developed N/A 46.11 67.52 85.76 Post -developed N/A 10.97 14.49 16.50 Table of Contents Master Network Summary Union County Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1 yrs) POST -AREA Time of Concentration Calculations, 1 years (Union County - Synthetic Curve, 1 yrs) POST -AREA Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs) BMP-1 Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1 yrs) Riser-1 Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs) Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) POST -AREA Union County - 1 15,647.000 11.900 6.30 Synthetic Curve, 1 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 1 15,423.000 19.400 0.08 Synthetic Curve, 1 yrs Pond Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) Maximum Maximum Water Pond Storage Surface (ft3) Elevation (ft) BMP-1 (IN) Union County - 1 15,647.000 11.900 6.30 (N/A) (N/A) Synthetic Curve, 1 yrs BMP-1 Union County - 1 15,423.000 19.400 0.08 570.81 12,207.000 (OUT) Synthetic Curve, 1 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 1 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 1 yrs Time -Depth Curve: TypeII 24hr (1.0 in) Label TypeII 24hr (1.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 1 years Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.0 1.500 0.0 0.0 0.0 0.0 0.0 2.000 0.0 0.0 0.0 0.0 0.0 2.500 0.0 0.0 0.0 0.0 0.0 3.000 0.0 0.0 0.0 0.0 0.0 3.500 0.0 0.0 0.0 0.0 0.0 4.000 0.0 0.0 0.1 0.1 0.1 4.500 0.1 0.1 0.1 0.1 0.1 5.000 0.1 0.1 0.1 0.1 0.1 5.500 0.1 0.1 0.1 0.1 0.1 6.000 0.1 0.1 0.1 0.1 0.1 6.500 0.1 0.1 0.1 0.1 0.1 7.000 0.1 0.1 0.1 0.1 0.1 7.500 0.1 0.1 0.1 0.1 0.1 8.000 0.1 0.1 0.1 0.1 0.1 8.500 0.1 0.1 0.1 0.1 0.1 9.000 0.1 0.2 0.2 0.2 0.2 9.500 0.2 0.2 0.2 0.2 0.2 10.000 0.2 0.2 0.2 0.2 0.2 10.500 0.2 0.2 0.2 0.2 0.2 11.000 0.2 0.2 0.3 0.3 0.3 11.500 0.3 0.3 0.4 0.4 0.6 12.000 0.7 0.7 0.7 0.7 0.7 12.500 0.7 0.7 0.8 0.8 0.8 13.000 0.8 0.8 0.8 0.8 0.8 13.500 0.8 0.8 0.8 0.8 0.8 14.000 0.8 0.8 0.8 0.8 0.8 14.500 0.8 0.8 0.8 0.8 0.9 15.000 0.9 0.9 0.9 0.9 0.9 15.500 0.9 0.9 0.9 0.9 0.9 16.000 0.9 0.9 0.9 0.9 0.9 16.500 0.9 0.9 0.9 0.9 0.9 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 2 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 1 years Label: Union County Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 0.9 0.9 0.9 0.9 0.9 17.500 0.9 0.9 0.9 0.9 0.9 18.000 0.9 0.9 0.9 0.9 0.9 18.500 0.9 0.9 0.9 0.9 0.9 19.000 0.9 0.9 0.9 0.9 0.9 19.500 0.9 0.9 0.9 0.9 1.0 20.000 1.0 1.0 1.0 1.0 1.0 20.500 1.0 1.0 1.0 1.0 1.0 21.000 1.0 1.0 1.0 1.0 1.0 21.500 1.0 1.0 1.0 1.0 1.0 22.000 1.0 1.0 1.0 1.0 1.0 22.500 1.0 1.0 1.0 1.0 1.0 23.000 1.0 1.0 1.0 1.0 1.0 23.500 1.0 1.0 1.0 1.0 1.0 24.000 1.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 3 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: POST -AREA Scenario: Union County - Synthetic Curve, 1 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.083 hours Time of Concentration (Composite) Time of Concentration 0.083 hours (Composite) Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 4 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Return Event: 1 years Label: POST -AREA Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs ==== User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 5 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Runoff CN-Area Label: POST -AREA Scenario: Union County - Synthetic Curve, 1 yrs Runoff Curve Number Data Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Impervious Areas - Paved parking lots, 98.000 5.450 0.0 0.0 98.000 roofs, driveways, Streets and roads COMPOSITE AREA & WEIGHTED CN ---> (N/A) 5.450 (N/A) (N/A) 98.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 6 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Elevation -Area Volume Curve Label: BMP-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total) (ft) (ftz) (acres) 2) (ft3) (ft3) (acres) 569.00 0.0 0.123 0.000 0.000 0.000 569.50 0.0 0.143 0.399 2,894.000 2,894.000 570.00 0.0 0.161 0.456 3,309.000 6,203.000 571.00 0.0 0.185 0.519 7,530.000 13,732.000 572.00 0.0 0.212 0.595 8,640.000 22,372.000 573.00 0.0 0.239 0.676 9,817.000 32,189.000 574.00 0.0 0.268 0.760 11,036.000 43,226.000 575.00 0.0 0.298 0.849 12,322.000 55,547.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 7 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 1 years Label: Riser-1 Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs Requested Pond Water Surface Elevations Minimum (Headwater) 569.00 ft Increment (Headwater) 0.50 ft Maximum (Headwater) 575.00 ft Outlet Connectivity Structure Type Outlet ID Direction Outfall E1 E2 (ft) (ft) Inlet Box RO Forward CO 574.15 575.00 Orifice -Circular Orifice - Forward CO 569.00 575.00 WQ Culvert -Circular CO Forward TW 566.00 575.00 Tailwater Settings Tailwater (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 8 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Structure ID: RO Structure Type: Inlet Box Number of Openings 1 Elevation 574.15 ft Orifice Area 16.0 ftz Orifice Coefficient 0.600 Weir Length 16.00 ft Weir Coefficient 3.00 (ft^0.5)/s K Reverse 1.000 Manning's n 0.000 Kev, Charged Riser 0.000 Weir Submergence False Orifice H to crest False Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 9 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 1 years Label: Riser-1 Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs Structure ID: CO Structure Type: Culvert -Circular Number of Barrels 1 Diameter 30.0 in Length 78.43 ft Length (Computed Barrel) 78.74 ft Slope (Computed) 0.089 ft/ft Outlet Control Data Manning's n 0.013 Ke 0.200 Kb 0.009 Kr 0.000 Convergence Tolerance 0.00 ft Inlet Control Data Equation Form Form 1 K 0.0045 M 2.0000 C 0.0317 Y 0.6900 T1 ratio (HW/D) 1.051 T2 ratio (HW/D) 1.153 Slope Correction Factor -0.500 Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... T1 Elevation 568.63 ft T1 Flow 27.16 ft3/s T2 Elevation 568.88 ft T2 Flow 31.05 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 10 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Structure ID: Orifice - WQ Structure Type: Orifice -Circular Number of Openings 1 Elevation 569.00 ft Orifice Diameter 1.5 in Orifice Coefficient 0.600 Structure ID: TW Structure Type: TW Setup, DS Channel Tailwater Type Free Outfall Convergence Tolerances Maximum Iterations 40 Tailwater Tolerance 0.01 ft (Minimum) Tailwater Tolerance 0.50 ft (Maximum) Headwater Tolerance 0.01 ft (Minimum) Headwater Tolerance 0.50 ft (Maximum) Flow Tolerance (Minimum) 0.001 ft3/s Flow Tolerance (Maximum) 10.000 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 11 of 12 Watertown, CT 06795 USA +1-203-755-1666 Index BMP-1 (Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1 yrs))... 7 Master Network Summary ... 1 POST -AREA (Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs))... 6 POST -AREA (Time of Concentration Calculations, 1 years (Union County - Synthetic Curve, 1 yrs))... 4, 5 Riser-1 (Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs))... 8, 9, 10, 11 U Union County (Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1 yrs))... 2, 3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 WQ.ppc Center [10.02.00.01] 2/11/2022 27 Siemon Company Drive Suite 200 W Page 12 of 12 Watertown, CT 06795 USA +1-203-755-1666 BMP 1 WQ 12,500.000 11,250.000 10,000.000 8,750.000 +, 7,500.000 6,250.000 5,000.000 3,750.000 2,500.000 1,250.000 0.000 20.000 40.000 60.000 80.000 100.000 120.00, Time (hours) BMP-1 - Union County - Synthetic Curve, 1 yrs - Volume I Table of Contents Master Network Summary Union County Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 3 yrs) Time -Depth Curve, 10 years (Union County - Synthetic Curve, 5 10 yrs) Time -Depth Curve, 25 years (Union County - Synthetic Curve, 7 25 yrs) Time -Depth Curve, 50 years (Union County - Synthetic Curve, 9 50 yrs) Time -Depth Curve, 100 years (Union County - Synthetic Curve, 11 100 yrs) POST -AREA Time of Concentration Calculations, 2 years (Union County - 13 Synthetic Curve, 2 yrs) POST -AREA YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 15 Elevation -Area Volume Curve, 2 years (Union County BMP 1 Synthetic Curve, 2 yrs) 16 Riser-1 Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 17 yrs) Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) POST -AREA Union County - 2 35,410.000 11.930 15.30 Synthetic Curve, 2 yrs POST -AREA Union County - 10 62,570.000 11.920 27.02 Synthetic Curve, 10 yrs POST -AREA Union County - 25 80,448.000 11.920 34.40 Synthetic Curve, 25 yrs POST -AREA Union County - 50 95,060.000 11.920 40.41 Synthetic Curve, 50 yrs POST -AREA Union County - 100 111,736.000 11.920 47.17 Synthetic Curve, 100 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 2 25,763.000 12.110 3.81 Synthetic Curve, 2 yrs OUTFALL Union County - 10 52,897.000 12.070 10.97 Synthetic Curve, 10 yrs OUTFALL Union County - 25 70,765.000 12.070 14.49 Synthetic Curve, 25 yrs OUTFALL Union County - 50 85,369.000 12.070 16.50 Synthetic Curve, 50 yrs OUTFALL Union County - 100 102,038.000 12.070 19.59 Synthetic Curve, 100 yrs Pond Summary Label Scenario BMP-1 (IN) I Union County - Synthetic Curve, 2 yrs Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) 2 i 35,410.000 i 11.930 i 15.30 Maximum Maximum Water Pond Storage Surface (ft3) Elevation (ft) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Master Network Summary Pond Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Maximum Maximum Event Volume (hours) (ft3/s) Water Pond Storage (years) (ft3) Surface (ft3) Elevation (ft) BMP-1 Union County - 2 25,763.000 12.110 3.81 571.26 15,828.000 (OUT) Synthetic Curve, 2 yrs BMP-1 (IN) Union County - 10 62,570.000 11.920 27.02 (N/A) (N/A) Synthetic Curve, 10 yrs BMP-1 Union County - 10 52,897.000 12.070 10.97 572.37 25,834.000 (OUT) Synthetic Curve, 10 yrs BMP-1 (IN) Union County - 25 80,448.000 11.920 34.40 (N/A) (N/A) Synthetic Curve, 25 yrs BMP-1 Union County - 25 70,765.000 12.070 14.49 572.99 32,059.000 (OUT) Synthetic Curve, 25 yrs BMP-1 (IN) Union County - 50 95,060.000 11.920 40.41 (N/A) (N/A) Synthetic Curve, 50 yrs BMP-1 Union County - 50 85,369.000 12.070 16.50 573.48 37,299.000 (OUT) Synthetic Curve, 50 yrs BMP-1 (IN) Union County - 100 111,736.000 11.920 47.17 (N/A) (N/A) Synthetic Curve, 100 yrs BMP-1 Union County - 100 102,038.000 12.070 19.59 573.98 43,029.000 (OUT) Synthetic Curve, 100 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 2 yrs Time -Depth Curve: TypeII 24hr (3.6 in) Label TypeII 24hr (3.6 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 2 years Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.1 0.1 0.1 0.1 3.000 0.1 0.1 0.1 0.1 0.1 3.500 0.1 0.2 0.2 0.2 0.2 4.000 0.2 0.2 0.2 0.2 0.2 4.500 0.2 0.2 0.2 0.2 0.2 5.000 0.2 0.2 0.2 0.2 0.3 5.500 0.3 0.3 0.3 0.3 0.3 6.000 0.3 0.3 0.3 0.3 0.3 6.500 0.3 0.3 0.3 0.3 0.3 7.000 0.4 0.4 0.4 0.4 0.4 7.500 0.4 0.4 0.4 0.4 0.4 8.000 0.4 0.4 0.4 0.5 0.5 8.500 0.5 0.5 0.5 0.5 0.5 9.000 0.5 0.5 0.6 0.6 0.6 9.500 0.6 0.6 0.6 0.6 0.6 10.000 0.7 0.7 0.7 0.7 0.7 10.500 0.7 0.8 0.8 0.8 0.8 11.000 0.8 0.9 0.9 0.9 1.0 11.500 1.0 1.1 1.3 1.6 2.0 12.000 2.4 2.5 2.5 2.6 2.6 12.500 2.6 2.7 2.7 2.7 2.8 13.000 2.8 2.8 2.8 2.8 2.9 13.500 2.9 2.9 2.9 2.9 2.9 14.000 3.0 3.0 3.0 3.0 3.0 14.500 3.0 3.0 3.0 3.1 3.1 15.000 3.1 3.1 3.1 3.1 3.1 15.500 3.1 3.1 3.1 3.2 3.2 16.000 3.2 3.2 3.2 3.2 3.2 16.500 3.2 3.2 3.2 3.2 3.2 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 2 years Label: Union County Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 3.2 3.3 3.3 3.3 3.3 17.500 3.3 3.3 3.3 3.3 3.3 18.000 3.3 3.3 3.3 3.3 3.3 18.500 3.3 3.4 3.4 3.4 3.4 19.000 3.4 3.4 3.4 3.4 3.4 19.500 3.4 3.4 3.4 3.4 3.4 20.000 3.4 3.4 3.4 3.4 3.4 20.500 3.5 3.5 3.5 3.5 3.5 21.000 3.5 3.5 3.5 3.5 3.5 21.500 3.5 3.5 3.5 3.5 3.5 22.000 3.5 3.5 3.5 3.5 3.5 22.500 3.5 3.5 3.5 3.6 3.6 23.000 3.6 3.6 3.6 3.6 3.6 23.500 3.6 3.6 3.6 3.6 3.6 24.000 3.6 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 10 yrs Time -Depth Curve: TypeII 24hr (5.2 in) Label TypeII 24hr (5.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 10 years Return Event: 10 years Storm Event: TypeII 24hr (5.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.2 0.2 0.2 0.2 0.2 4.000 0.2 0.3 0.3 0.3 0.3 4.500 0.3 0.3 0.3 0.3 0.3 5.000 0.3 0.3 0.3 0.4 0.4 5.500 0.4 0.4 0.4 0.4 0.4 6.000 0.4 0.4 0.4 0.4 0.5 6.500 0.5 0.5 0.5 0.5 0.5 7.000 0.5 0.5 0.5 0.5 0.6 7.500 0.6 0.6 0.6 0.6 0.6 8.000 0.6 0.6 0.6 0.7 0.7 8.500 0.7 0.7 0.7 0.7 0.7 9.000 0.8 0.8 0.8 0.8 0.8 9.500 0.8 0.9 0.9 0.9 0.9 10.000 0.9 1.0 1.0 1.0 1.0 10.500 1.1 1.1 1.1 1.2 1.2 11.000 1.2 1.3 1.3 1.4 1.4 11.500 1.5 1.6 1.8 2.2 3.0 12.000 3.4 3.5 3.6 3.7 3.8 12.500 3.8 3.9 3.9 3.9 4.0 13.000 4.0 4.0 4.1 4.1 4.1 13.500 4.2 4.2 4.2 4.2 4.2 14.000 4.3 4.3 4.3 4.3 4.3 14.500 4.4 4.4 4.4 4.4 4.4 15.000 4.4 4.5 4.5 4.5 4.5 15.500 4.5 4.5 4.5 4.6 4.6 16.000 4.6 4.6 4.6 4.6 4.6 16.500 4.6 4.6 4.7 4.7 4.7 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 10 years Label: Union County Storm Event: TypeII 24hr (5.2 in) Scenario: Union County - Synthetic Curve, 10 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 4.7 4.7 4.7 4.7 4.7 17.500 4.7 4.8 4.8 4.8 4.8 18.000 4.8 4.8 4.8 4.8 4.8 18.500 4.8 4.8 4.9 4.9 4.9 19.000 4.9 4.9 4.9 4.9 4.9 19.500 4.9 4.9 4.9 4.9 4.9 20.000 5.0 5.0 5.0 5.0 5.0 20.500 5.0 5.0 5.0 5.0 5.0 21.000 5.0 5.0 5.0 5.0 5.0 21.500 5.0 5.1 5.1 5.1 5.1 22.000 5.1 5.1 5.1 5.1 5.1 22.500 5.1 5.1 5.1 5.1 5.1 23.000 5.1 5.1 5.2 5.2 5.2 23.500 5.2 5.2 5.2 5.2 5.2 24.000 5.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 25 yrs Time -Depth Curve: TypeII 24hr (6.2 in) Label TypeII 24hr (6.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 25 years Return Event: 25 years Storm Event: TypeII 24hr (6.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.3 0.3 0.3 4.500 0.3 0.4 0.4 0.4 0.4 5.000 0.4 0.4 0.4 0.4 0.4 5.500 0.4 0.5 0.5 0.5 0.5 6.000 0.5 0.5 0.5 0.5 0.5 6.500 0.6 0.6 0.6 0.6 0.6 7.000 0.6 0.6 0.6 0.7 0.7 7.500 0.7 0.7 0.7 0.7 0.7 8.000 0.7 0.8 0.8 0.8 0.8 8.500 0.8 0.8 0.9 0.9 0.9 9.000 0.9 0.9 1.0 1.0 1.0 9.500 1.0 1.0 1.1 1.1 1.1 10.000 1.1 1.1 1.2 1.2 1.2 10.500 1.3 1.3 1.3 1.4 1.4 11.000 1.5 1.5 1.6 1.6 1.7 11.500 1.8 1.9 2.2 2.7 3.5 12.000 4.1 4.2 4.3 4.4 4.5 12.500 4.6 4.6 4.7 4.7 4.7 13.000 4.8 4.8 4.9 4.9 4.9 13.500 5.0 5.0 5.0 5.0 5.1 14.000 5.1 5.1 5.1 5.2 5.2 14.500 5.2 5.2 5.2 5.3 5.3 15.000 5.3 5.3 5.3 5.3 5.4 15.500 5.4 5.4 5.4 5.4 5.4 16.000 5.5 5.5 5.5 5.5 5.5 16.500 5.5 5.5 5.6 5.6 5.6 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 25 years Label: Union County Storm Event: TypeII 24hr (6.2 in) Scenario: Union County - Synthetic Curve, 25 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 5.6 5.6 5.6 5.6 5.6 17.500 5.7 5.7 5.7 5.7 5.7 18.000 5.7 5.7 5.7 5.7 5.8 18.500 5.8 5.8 5.8 5.8 5.8 19.000 5.8 5.8 5.8 5.8 5.9 19.500 5.9 5.9 5.9 5.9 5.9 20.000 5.9 5.9 5.9 5.9 5.9 20.500 5.9 6.0 6.0 6.0 6.0 21.000 6.0 6.0 6.0 6.0 6.0 21.500 6.0 6.0 6.0 6.0 6.0 22.000 6.1 6.1 6.1 6.1 6.1 22.500 6.1 6.1 6.1 6.1 6.1 23.000 6.1 6.1 6.1 6.2 6.2 23.500 6.2 6.2 6.2 6.2 6.2 24.000 6.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 50 yrs Time -Depth Curve: TypeII 24hr (7.0 in) Label TypeII 24hr (7.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 50 years Return Event: 50 years Storm Event: TypeII 24hr (7.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.4 0.4 0.4 4.500 0.4 0.4 0.4 0.4 0.4 5.000 0.4 0.5 0.5 0.5 0.5 5.500 0.5 0.5 0.5 0.5 0.5 6.000 0.6 0.6 0.6 0.6 0.6 6.500 0.6 0.6 0.7 0.7 0.7 7.000 0.7 0.7 0.7 0.7 0.8 7.500 0.8 0.8 0.8 0.8 0.8 8.000 0.8 0.9 0.9 0.9 0.9 8.500 0.9 0.9 1.0 1.0 1.0 9.000 1.0 1.1 1.1 1.1 1.1 9.500 1.1 1.2 1.2 1.2 1.2 10.000 1.3 1.3 1.3 1.4 1.4 10.500 1.4 1.5 1.5 1.5 1.6 11.000 1.6 1.7 1.8 1.8 1.9 11.500 2.0 2.1 2.5 3.0 4.0 12.000 4.6 4.8 4.9 5.0 5.1 12.500 5.1 5.2 5.3 5.3 5.4 13.000 5.4 5.4 5.5 5.5 5.6 13.500 5.6 5.6 5.7 5.7 5.7 14.000 5.7 5.8 5.8 5.8 5.8 14.500 5.9 5.9 5.9 5.9 6.0 15.000 6.0 6.0 6.0 6.0 6.1 15.500 6.1 6.1 6.1 6.1 6.1 16.000 6.2 6.2 6.2 6.2 6.2 16.500 6.2 6.3 6.3 6.3 6.3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 50 years Label: Union County Storm Event: TypeII 24hr (7.0 in) Scenario: Union County - Synthetic Curve, 50 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 6.3 6.3 6.3 6.4 6.4 17.500 6.4 6.4 6.4 6.4 6.4 18.000 6.4 6.5 6.5 6.5 6.5 18.500 6.5 6.5 6.5 6.5 6.6 19.000 6.6 6.6 6.6 6.6 6.6 19.500 6.6 6.6 6.6 6.6 6.7 20.000 6.7 6.7 6.7 6.7 6.7 20.500 6.7 6.7 6.7 6.7 6.7 21.000 6.8 6.8 6.8 6.8 6.8 21.500 6.8 6.8 6.8 6.8 6.8 22.000 6.8 6.8 6.9 6.9 6.9 22.500 6.9 6.9 6.9 6.9 6.9 23.000 6.9 6.9 6.9 6.9 7.0 23.500 7.0 7.0 7.0 7.0 7.0 24.000 7.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 100 yrs Time -Depth Curve: TypeII 24hr (7.9 in) Label TypeII 24hr (7.9 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 100 years Return Event: 100 years Storm Event: TypeII 24hr (7.9 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.2 0.2 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.3 0.3 3.000 0.3 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.4 0.4 4.000 0.4 0.4 0.4 0.4 0.4 4.500 0.4 0.4 0.5 0.5 0.5 5.000 0.5 0.5 0.5 0.5 0.5 5.500 0.6 0.6 0.6 0.6 0.6 6.000 0.6 0.6 0.7 0.7 0.7 6.500 0.7 0.7 0.7 0.8 0.8 7.000 0.8 0.8 0.8 0.8 0.8 7.500 0.9 0.9 0.9 0.9 0.9 8.000 0.9 1.0 1.0 1.0 1.0 8.500 1.0 1.1 1.1 1.1 1.1 9.000 1.2 1.2 1.2 1.2 1.3 9.500 1.3 1.3 1.3 1.4 1.4 10.000 1.4 1.5 1.5 1.5 1.6 10.500 1.6 1.7 1.7 1.7 1.8 11.000 1.9 1.9 2.0 2.1 2.1 11.500 2.2 2.4 2.8 3.4 4.5 12.000 5.2 5.4 5.5 5.6 5.7 12.500 5.8 5.9 5.9 6.0 6.0 13.000 6.1 6.1 6.2 6.2 6.3 13.500 6.3 6.3 6.4 6.4 6.4 14.000 6.5 6.5 6.5 6.6 6.6 14.500 6.6 6.6 6.7 6.7 6.7 15.000 6.7 6.8 6.8 6.8 6.8 15.500 6.9 6.9 6.9 6.9 6.9 16.000 7.0 7.0 7.0 7.0 7.0 16.500 7.0 7.1 7.1 7.1 7.1 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 100 years Label: Union County Storm Event: TypeII 24hr (7.9 in) Scenario: Union County - Synthetic Curve, 100 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 7.1 7.1 7.2 7.2 7.2 17.500 7.2 7.2 7.2 7.2 7.3 18.000 7.3 7.3 7.3 7.3 7.3 18.500 7.3 7.4 7.4 7.4 7.4 19.000 7.4 7.4 7.4 7.4 7.5 19.500 7.5 7.5 7.5 7.5 7.5 20.000 7.5 7.5 7.5 7.6 7.6 20.500 7.6 7.6 7.6 7.6 7.6 21.000 7.6 7.6 7.6 7.7 7.7 21.500 7.7 7.7 7.7 7.7 7.7 22.000 7.7 7.7 7.7 7.7 7.8 22.500 7.8 7.8 7.8 7.8 7.8 23.000 7.8 7.8 7.8 7.8 7.8 23.500 7.9 7.9 7.9 7.9 7.9 24.000 7.9 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 12 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: POST -AREA Scenario: Union County - Synthetic Curve, 2 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.083 hours Time of Concentration (Composite) Time of Concentration 0.083 hours (Composite) Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Return Event: 2 years Label: POST -AREA Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs ==== User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Runoff CN-Area Label: POST -AREA Scenario: Union County - Synthetic Curve, 2 yrs Runoff Curve Number Data Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Impervious Areas - Paved parking lots, 98.000 2.980 0.0 0.0 98.000 roofs, driveways, Streets and roads Open space (Lawns,parks etc.) - Good 61.000 2.470 0.0 0.0 61.000 condition; grass cover > 75% - Soil B COMPOSITE AREA & WEIGHTED CN ---> (N/A) 5.450 (N/A) (N/A) 81.231 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Elevation -Area Volume Curve Label: BMP-1 Scenario: Union County - Synthetic Curve, 2 yrs Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total) (ft) (ftz) (acres) 2) (ft3) (ft3) (acres) 569.00 0.0 0.123 0.000 0.000 0.000 569.50 0.0 0.143 0.399 2,894.000 2,894.000 570.00 0.0 0.161 0.456 3,309.000 6,203.000 571.00 0.0 0.185 0.519 7,530.000 13,732.000 572.00 0.0 0.212 0.595 8,640.000 22,372.000 573.00 0.0 0.239 0.676 9,817.000 32,189.000 574.00 0.0 0.268 0.760 11,036.000 43,226.000 575.00 0.0 0.298 0.849 12,322.000 55,547.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 16 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Requested Pond Water Surface Elevations Minimum (Headwater) 569.00 ft Increment (Headwater) 0.50 ft Maximum (Headwater) 575.00 ft Outlet Connectivity Structure Type Outlet ID Direction Outfall E1 E2 (ft) (ft) Inlet Box RO Forward CO 573.90 575.00 Orifice -Circular Orifice - Forward CO 569.00 575.00 WQ Culvert -Circular CO Forward TW 566.00 575.00 Orifice -Area Orifice - Forward TW 570.85 575.00 2yr Orifice -Area Orifice - 10 Forward TW 572.00 575.00 yr Rectangular Weir Weir - 1 Forward TW 574.00 575.00 Tailwater Settings Tailwater I I I (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 17 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 2 yrs Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Structure ID: RO Structure Type: Inlet Box Number of Openings 1 Elevation 573.90 ft Orifice Area 16.0 ftz Orifice Coefficient 0.600 Weir Length 16.00 ft Weir Coefficient 3.00 (ft^0.5)/s K Reverse 1.000 Manning's n 0.000 Kev, Charged Riser 0.000 Weir Submergence False Orifice H to crest False Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 18 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Structure ID: CO Structure Type: Culvert -Circular Number of Barrels 1 Diameter 30.0 in Length 78.43 ft Length (Computed Barrel) 78.74 ft Slope (Computed) 0.089 ft/ft Outlet Control Data Manning's n 0.013 Ke 0.200 Kb 0.009 Kr 0.000 Convergence Tolerance 0.00 ft Inlet Control Data Equation Form Form 1 K 0.0045 M 2.0000 C 0.0317 Y 0.6900 T1 ratio (HW/D) 1.051 T2 ratio (HW/D) 1.153 Slope Correction Factor -0.500 Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... T1 Elevation 568.63 ft T1 Flow 27.16 ft3/s T2 Elevation 568.88 ft T2 Flow 31.05 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 19 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 2 yrs BMP-1 POST.ppc 2/28/2022 Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Structure ID: Orifice - WQ Structure Type: Orifice -Circular Number of Openings 1 Elevation 569.00 ft Orifice Diameter 1.5 in Orifice Coefficient 0.600 Structure ID: Orifice - 2yr Structure Type: Orifice -Area Number of Openings 1 Elevation 570.85 ft Orifice Area 1.5 ftz Top Elevation 571.35 ft Datum Elevation 570.85 ft Orifice Coefficient 0.600 Structure ID: Weir- 1 Structure Type: Rectangular Weir Number of Openings 1 Elevation 574.00 ft Weir Length 30.00 ft Weir Coefficient 3.00 (ft^0.5)/s Structure ID: Orifice - 10 yr Structure Type: Orifice -Area Number of Openings 1 Elevation 572.00 ft Orifice Area 0.8 ftz Top Elevation 572.25 ft Datum Elevation 572.00 ft Orifice Coefficient 0.600 Structure ID: TW Structure Type: TW Setup, DS Channel Tailwater Type Free Outfall Convergence Tolerances Maximum Iterations 40 Tailwater Tolerance 0.01 ft (Minimum) Tailwater Tolerance 0.50 ft (Maximum) Headwater Tolerance 0.01 ft (Minimum) Bentley Systems, Inc. Haestad Methods Solution Center 27 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Pond Pack CONNECT Edition [10.02.00.01] Page 20 of 22 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Convergence Tolerances Headwater Tolerance 0.50 ft (Maximum) Flow Tolerance (Minimum) 0.001 ft3/s Flow Tolerance (Maximum) 10.000 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 21 of 22 Watertown, CT 06795 USA +1-203-755-1666 Index BMP-1 (Elevation -Area Volume Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 16 Master Network Summary ... 1, 2 POST -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 15 POST -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic Curve, 2 yrs))... 13, 14 Riser-1 (Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 yrs))...17, 18, 19, 20, 21 U Union County (Time -Depth Curve, 10 years (Union County - Synthetic Curve, 10 yrs))... 5, 6 Union County (Time -Depth Curve, 100 years (Union County - Synthetic Curve, 100 yrs))... 11, 12 Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 3, 4 Union County (Time -Depth Curve, 25 years (Union County - Synthetic Curve, 25 yrs))... 7, 8 Union County (Time -Depth Curve, 50 years (Union County - Synthetic Curve, 50 yrs))... 9, 10 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-1 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 22 of 22 Watertown, CT 06795 USA +1-203-755-1666 BMP-2 Calculations: Project Name: The Bluffs at Wesley Chapel (BMP-2) Project Number: 1021119 Design Requirements: 85% TSS REMOVAL Given Information: Land Use: Residential Drainage Area to Facility (Acres): 12.64 Meck. County (Minimum 10 Ac. Less than 10 Ac requires water balance computations) Impervious Area (Acres): 4.03 Percent Impervious: 31.9% Soil Type: ChA, GsE, TbB2 Soil Group: B/D Curve Number (CN) Pre: 63 Curve Number (CN) Post: 73 Time of Concentration Pre (hour): 0.540 Time of Concentration Post (hour): 0.083 Design Storm Rainfall Depth (in): 1.0 (Typically 1") Detention Time (Day): 2 Meck. County: 4 days - 85% TSS & 70% TP (Optimal Efficiency) 2 days - 60% TSS & 40% TP (Standard Efficiency) 4 days - 85% TSS & 0% TP (TSS - Only Efficiency) NCDENR: 2 - 5 days - 85% TSS & 40% TP Watershed: Mountain and Piedmont (85% TSS) Efficiency: NCDEN R Wet Pond Design (NCDENR - 2007) Project Name: The Bluffs at Wesley Chapel (BMP-2) Job Number: 1021119 Step 1: Compute the water quality volume (WQV). WQv (Ft) = (3630) X (RD) X (Rv) X (AD) Where: WQV = Water Quality Volume (Ft) AD = Drainage Area to Wet Pond (acres). Rv= Volumetric Runoff Coefficient = 0.05 + 0.9 (% Impervious) Rp = Design Storm Rainfall Depth (in). Typically 1.0". Percent Impervious = 32% AD = 12.64 acres Rp= 1.0 in Rv = 0.34 WQv = 15,460 Ft3 Step 2: Determine Surface Area Requirements. Average Permanent Pool Depth =®Feet Percent Impervious = 32% SA / DA Ratio = 1.08 Required Surface Area = 5,946 Ft2 Step 3: Preliminary Temporary Water Quality Drawdown Calculations Pond Height above Orifice = 577.07 feet Orifice Invert Elevation = 576.00 feet Pond Surface Area at Height Above Orifice = 29,393 square feet Pond Surface Area at Orifice Invert Elevation = 24,767 square feet Orifice Diameter (D) = 2.50 inches = 0.21 feet Orifice Area (a) = 0.0341 square feet Average Surface Area (A) = 27,080 square feet Gravitational Constatnt (g) = 32.2 ft/sec2 Head (H) = 0.97 feet Discharge Coefficient (C) = 0.6 Time (t) = 324,286 seconds = 3.75 days Note: The above calculation is based on the Bernoulli Equation where: t ° x (0 - H°.5 ; x a x (2g)) Step 4: Compute Site Hydraulic Input Parameters. Condition Area (Ac) CN Tc (hours) Pre -developed 37.65 63 0.54 Post -developed 12.64 73 0.083 Results Condition Q1-year Q10-year Q25-year Q50-year Pre -developed N/A 46.11 67.52 85.76 Post -developed N/A 3.37 6.32 8.27 Table of Contents Master Network Summary Union County Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1 yrs) POST -AREA Time of Concentration Calculations, 1 years (Union County - Synthetic Curve, 1 yrs) POST -AREA Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs) BMP-1 Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1 yrs) Riser-1 Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs) Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) POST -AREA Union County - 1 36,290.000 11.900 14.60 Synthetic Curve, 1 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 1 34,040.000 20.200 0.16 Synthetic Curve, 1 yrs Pond Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) Maximum Maximum Water Pond Storage Surface (ft3) Elevation (ft) BMP-1 (IN) Union County - 1 36,290.000 11.900 14.60 (N/A) (N/A) Synthetic Curve, 1 yrs BMP-1 Union County - 1 34,040.000 20.200 0.16 577.07 29,218.000 (OUT) Synthetic Curve, 1 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 1 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 1 yrs Time -Depth Curve: TypeII 24hr (1.0 in) Label TypeII 24hr (1.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 1 years Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.0 1.500 0.0 0.0 0.0 0.0 0.0 2.000 0.0 0.0 0.0 0.0 0.0 2.500 0.0 0.0 0.0 0.0 0.0 3.000 0.0 0.0 0.0 0.0 0.0 3.500 0.0 0.0 0.0 0.0 0.0 4.000 0.0 0.0 0.1 0.1 0.1 4.500 0.1 0.1 0.1 0.1 0.1 5.000 0.1 0.1 0.1 0.1 0.1 5.500 0.1 0.1 0.1 0.1 0.1 6.000 0.1 0.1 0.1 0.1 0.1 6.500 0.1 0.1 0.1 0.1 0.1 7.000 0.1 0.1 0.1 0.1 0.1 7.500 0.1 0.1 0.1 0.1 0.1 8.000 0.1 0.1 0.1 0.1 0.1 8.500 0.1 0.1 0.1 0.1 0.1 9.000 0.1 0.2 0.2 0.2 0.2 9.500 0.2 0.2 0.2 0.2 0.2 10.000 0.2 0.2 0.2 0.2 0.2 10.500 0.2 0.2 0.2 0.2 0.2 11.000 0.2 0.2 0.3 0.3 0.3 11.500 0.3 0.3 0.4 0.4 0.6 12.000 0.7 0.7 0.7 0.7 0.7 12.500 0.7 0.7 0.8 0.8 0.8 13.000 0.8 0.8 0.8 0.8 0.8 13.500 0.8 0.8 0.8 0.8 0.8 14.000 0.8 0.8 0.8 0.8 0.8 14.500 0.8 0.8 0.8 0.8 0.9 15.000 0.9 0.9 0.9 0.9 0.9 15.500 0.9 0.9 0.9 0.9 0.9 16.000 0.9 0.9 0.9 0.9 0.9 16.500 0.9 0.9 0.9 0.9 0.9 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 2 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 1 years Label: Union County Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 0.9 0.9 0.9 0.9 0.9 17.500 0.9 0.9 0.9 0.9 0.9 18.000 0.9 0.9 0.9 0.9 0.9 18.500 0.9 0.9 0.9 0.9 0.9 19.000 0.9 0.9 0.9 0.9 0.9 19.500 0.9 0.9 0.9 0.9 1.0 20.000 1.0 1.0 1.0 1.0 1.0 20.500 1.0 1.0 1.0 1.0 1.0 21.000 1.0 1.0 1.0 1.0 1.0 21.500 1.0 1.0 1.0 1.0 1.0 22.000 1.0 1.0 1.0 1.0 1.0 22.500 1.0 1.0 1.0 1.0 1.0 23.000 1.0 1.0 1.0 1.0 1.0 23.500 1.0 1.0 1.0 1.0 1.0 24.000 1.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 3 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: POST -AREA Scenario: Union County - Synthetic Curve, 1 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.083 hours Time of Concentration (Composite) Time of Concentration 0.083 hours (Composite) Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 4 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Return Event: 1 years Label: POST -AREA Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs ==== User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 5 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Runoff CN-Area Label: POST -AREA Scenario: Union County - Synthetic Curve, 1 yrs Runoff Curve Number Data Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Impervious Areas - Paved parking lots, 98.000 12.640 0.0 0.0 98.000 roofs, driveways, Streets and roads COMPOSITE AREA & WEIGHTED CN ---> (N/A) 12.640 (N/A) (N/A) 98.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 6 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Elevation -Area Volume Curve Label: BMP-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total) (ft) (ftz) (acres) 2) (ft3) (ft3) (acres) 576.00 0.0 0.569 0.000 0.000 0.000 576.50 0.0 0.629 1.796 13,041.000 13,041.000 577.00 0.0 0.676 1.957 14,208.000 27,249.000 578.00 0.0 0.729 2.107 30,594.000 57,843.000 579.00 0.0 0.784 2.269 32,946.000 90,789.000 580.00 0.0 0.840 2.436 35,364.000 126,152.000 581.00 0.0 0.898 2.607 37,847.000 163,999.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 7 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 1 years Label: Riser-1 Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs Requested Pond Water Surface Elevations Minimum (Headwater) 576.00 ft Increment (Headwater) 0.50 ft Maximum (Headwater) 581.00 ft Outlet Connectivity Structure Type Outlet ID Direction Outfall E1 E2 (ft) (ft) Inlet Box RO Forward CO 579.25 581.00 Orifice -Circular Orifice - Forward CO 576.00 581.00 WQ Culvert -Circular CO Forward TW 573.00 581.00 Tailwater Settings Tailwater (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 8 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Structure ID: RO Structure Type: Inlet Box Number of Openings 1 Elevation 579.25 ft Orifice Area 16.0 ftz Orifice Coefficient 0.600 Weir Length 16.00 ft Weir Coefficient 3.00 (ft^0.5)/s K Reverse 1.000 Manning's n 0.000 Kev, Charged Riser 0.000 Weir Submergence False Orifice H to crest False Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 9 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 1 years Label: Riser-1 Storm Event: TypeII 24hr (1.0 in) Scenario: Union County - Synthetic Curve, 1 yrs Structure ID: CO Structure Type: Culvert -Circular Number of Barrels 1 Diameter 30.0 in Length 64.06 ft Length (Computed Barrel) 64.18 ft Slope (Computed) 0.062 ft/ft Outlet Control Data Manning's n 0.013 Ke 0.200 Kb 0.009 Kr 0.000 Convergence Tolerance 0.00 ft Inlet Control Data Equation Form Form 1 K 0.0045 M 2.0000 C 0.0317 Y 0.6900 T1 ratio (HW/D) 0.000 T2 ratio (HW/D) 1.166 Slope Correction Factor -0.500 Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... T1 Elevation 573.00 ft T1 Flow 27.16 ft3/s T2 Elevation 575.91 ft T2 Flow 31.05 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 10 of 12 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 1 yrs Return Event: 1 years Storm Event: TypeII 24hr (1.0 in) Structure ID: Orifice - WQ Structure Type: Orifice -Circular Number of Openings 1 Elevation 576.00 ft Orifice Diameter 2.5 in Orifice Coefficient 0.600 Structure ID: TW Structure Type: TW Setup, DS Channel Tailwater Type Free Outfall Convergence Tolerances Maximum Iterations 40 Tailwater Tolerance 0.01 ft (Minimum) Tailwater Tolerance 0.50 ft (Maximum) Headwater Tolerance 0.01 ft (Minimum) Headwater Tolerance 0.50 ft (Maximum) Flow Tolerance (Minimum) 0.001 ft3/s Flow Tolerance (Maximum) 10.000 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 11 of 12 Watertown, CT 06795 USA +1-203-755-1666 Index BMP-1 (Elevation -Area Volume Curve, 1 years (Union County - Synthetic Curve, 1 yrs))... 7 Master Network Summary ... 1 POST -AREA (Runoff CN-Area, 1 years (Union County - Synthetic Curve, 1 yrs))... 6 POST -AREA (Time of Concentration Calculations, 1 years (Union County - Synthetic Curve, 1 yrs))... 4, 5 Riser-1 (Outlet Input Data, 1 years (Union County - Synthetic Curve, 1 yrs))... 8, 9, 10, 11 U Union County (Time -Depth Curve, 1 years (Union County - Synthetic Curve, 1 yrs))... 2, 3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 WQ.ppc Center [10.02.00.01] 2/22/2022 27 Siemon Company Drive Suite 200 W Page 12 of 12 Watertown, CT 06795 USA +1-203-755-1666 BMP 2 WQ 30,000.000 27,500.000 25,000.000 22,500.000 20,000.000 17,500.000 15,000.000 0 12,500.000 10,000.000 7,500.000 5,000.000 2,500.000 0.000 0.000 20.000 40.000 60.000 80.000 100.000 120.00, Time (hours) BMP-1 - Union County - Synthetic Curve, 1 yrs - Volume I Table of Contents Master Network Summary Union County Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 3 yrs) Time -Depth Curve, 10 years (Union County - Synthetic Curve, 5 10 yrs) Time -Depth Curve, 25 years (Union County - Synthetic Curve, 7 25 yrs) Time -Depth Curve, 50 years (Union County - Synthetic Curve, 9 50 yrs) Time -Depth Curve, 100 years (Union County - Synthetic Curve, 11 100 yrs) POST -AREA Time of Concentration Calculations, 2 years (Union County - 13 Synthetic Curve, 2 yrs) POST -AREA YRunoffCN-Area, 2 years (Union County - Synthetic Curve, 2 15 Elevation -Area Volume Curve, 2 years (Union County BMP 2 Synthetic Curve, 2 yrs) 16 Riser-1 Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 17 yrs) Subsection: Master Network Summary Catchments Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) POST -AREA Union County - 2 57,233.000 11.930 24.11 Synthetic Curve, 2 yrs POST -AREA Union County - 10 111,878.000 11.930 48.36 Synthetic Curve, 10 yrs POST -AREA Union County - 25 149,362.000 11.920 64.58 Synthetic Curve, 25 yrs POST -AREA Union County - 50 180,563.000 11.920 78.02 Synthetic Curve, 50 yrs POST -AREA Union County - 100 216,634.000 11.920 93.38 Synthetic Curve, 100 yrs Node Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) OUTFALL Union County - 2 28,619.000 15.440 0.79 Synthetic Curve, 2 yrs OUTFALL Union County - 10 82,923.000 12.810 3.52 Synthetic Curve, 10 yrs OUTFALL Union County - 25 120,257.000 12.090 19.81 Synthetic Curve, 25 yrs OUTFALL Union County - 50 151,357.000 12.060 41.68 Synthetic Curve, 50 yrs OUTFALL Union County - 100 187,329.000 12.040 63.96 Synthetic Curve, 100 yrs Pond Summary Label Scenario BMP-2 (IN) I Union County - Synthetic Curve, 2 yrs Return Hydrograph Time to Peak Peak Flow Event Volume (hours) (ft3/s) (years) (ft3) 2 i 57,233.000 i 11.930 i 24.11 Maximum Maximum Water Pond Storage Surface (ft3) Elevation (ft) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 1 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Master Network Summary Pond Summary Label Scenario Return Hydrograph Time to Peak Peak Flow Maximum Maximum Event Volume (hours) (ft3/s) Water Pond Storage (years) (ft3) Surface (ft3) Elevation (ft) BMP-2 Union County - 2 28,619.000 15.440 0.79 577.33 37,188.000 (OUT) Synthetic Curve, 2 yrs BMP-2 (IN) Union County - 10 111,878.000 11.930 48.36 (N/A) (N/A) Synthetic Curve, 10 yrs BMP-2 Union County - 10 82,923.000 12.810 3.52 578.00 57,950.000 (OUT) Synthetic Curve, 10 yrs BMP-2 (IN) Union County - 25 149,362.000 11.920 64.58 (N/A) (N/A) Synthetic Curve, 25 yrs BMP-2 Union County - 25 120,257.000 12.090 19.81 578.30 67,525.000 (OUT) Synthetic Curve, 25 yrs BMP-2 (IN) Union County - 50 180,563.000 11.920 78.02 (N/A) (N/A) Synthetic Curve, 50 yrs BMP-2 Union County - 50 151,357.000 12.060 41.68 578.53 75,046.000 (OUT) Synthetic Curve, 50 yrs BMP-2 (IN) Union County - 100 216,634.000 11.920 93.38 (N/A) (N/A) Synthetic Curve, 100 yrs BMP-2 Union County - 100 187,329.000 12.040 63.96 578.72 81,191.000 (OUT) Synthetic Curve, 100 yrs Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 2 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 2 yrs Time -Depth Curve: TypeII 24hr (3.6 in) Label TypeII 24hr (3.6 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 2 years Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.0 0.0 0.0 0.0 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.1 0.1 0.1 0.1 3.000 0.1 0.1 0.1 0.1 0.1 3.500 0.1 0.2 0.2 0.2 0.2 4.000 0.2 0.2 0.2 0.2 0.2 4.500 0.2 0.2 0.2 0.2 0.2 5.000 0.2 0.2 0.2 0.2 0.3 5.500 0.3 0.3 0.3 0.3 0.3 6.000 0.3 0.3 0.3 0.3 0.3 6.500 0.3 0.3 0.3 0.3 0.3 7.000 0.4 0.4 0.4 0.4 0.4 7.500 0.4 0.4 0.4 0.4 0.4 8.000 0.4 0.4 0.4 0.5 0.5 8.500 0.5 0.5 0.5 0.5 0.5 9.000 0.5 0.5 0.6 0.6 0.6 9.500 0.6 0.6 0.6 0.6 0.6 10.000 0.7 0.7 0.7 0.7 0.7 10.500 0.7 0.8 0.8 0.8 0.8 11.000 0.8 0.9 0.9 0.9 1.0 11.500 1.0 1.1 1.3 1.6 2.0 12.000 2.4 2.5 2.5 2.6 2.6 12.500 2.6 2.7 2.7 2.7 2.8 13.000 2.8 2.8 2.8 2.8 2.9 13.500 2.9 2.9 2.9 2.9 2.9 14.000 3.0 3.0 3.0 3.0 3.0 14.500 3.0 3.0 3.0 3.1 3.1 15.000 3.1 3.1 3.1 3.1 3.1 15.500 3.1 3.1 3.1 3.2 3.2 16.000 3.2 3.2 3.2 3.2 3.2 16.500 3.2 3.2 3.2 3.2 3.2 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 3 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 2 years Label: Union County Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 3.2 3.3 3.3 3.3 3.3 17.500 3.3 3.3 3.3 3.3 3.3 18.000 3.3 3.3 3.3 3.3 3.3 18.500 3.3 3.4 3.4 3.4 3.4 19.000 3.4 3.4 3.4 3.4 3.4 19.500 3.4 3.4 3.4 3.4 3.4 20.000 3.4 3.4 3.4 3.4 3.4 20.500 3.5 3.5 3.5 3.5 3.5 21.000 3.5 3.5 3.5 3.5 3.5 21.500 3.5 3.5 3.5 3.5 3.5 22.000 3.5 3.5 3.5 3.5 3.5 22.500 3.5 3.5 3.5 3.6 3.6 23.000 3.6 3.6 3.6 3.6 3.6 23.500 3.6 3.6 3.6 3.6 3.6 24.000 3.6 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 4 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 10 yrs Time -Depth Curve: TypeII 24hr (5.2 in) Label TypeII 24hr (5.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 10 years Return Event: 10 years Storm Event: TypeII 24hr (5.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.0 0.0 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.1 0.1 0.1 2.500 0.1 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.2 0.2 0.2 0.2 0.2 4.000 0.2 0.3 0.3 0.3 0.3 4.500 0.3 0.3 0.3 0.3 0.3 5.000 0.3 0.3 0.3 0.4 0.4 5.500 0.4 0.4 0.4 0.4 0.4 6.000 0.4 0.4 0.4 0.4 0.5 6.500 0.5 0.5 0.5 0.5 0.5 7.000 0.5 0.5 0.5 0.5 0.6 7.500 0.6 0.6 0.6 0.6 0.6 8.000 0.6 0.6 0.6 0.7 0.7 8.500 0.7 0.7 0.7 0.7 0.7 9.000 0.8 0.8 0.8 0.8 0.8 9.500 0.8 0.9 0.9 0.9 0.9 10.000 0.9 1.0 1.0 1.0 1.0 10.500 1.1 1.1 1.1 1.2 1.2 11.000 1.2 1.3 1.3 1.4 1.4 11.500 1.5 1.6 1.8 2.2 3.0 12.000 3.4 3.5 3.6 3.7 3.8 12.500 3.8 3.9 3.9 3.9 4.0 13.000 4.0 4.0 4.1 4.1 4.1 13.500 4.2 4.2 4.2 4.2 4.2 14.000 4.3 4.3 4.3 4.3 4.3 14.500 4.4 4.4 4.4 4.4 4.4 15.000 4.4 4.5 4.5 4.5 4.5 15.500 4.5 4.5 4.5 4.6 4.6 16.000 4.6 4.6 4.6 4.6 4.6 16.500 4.6 4.6 4.7 4.7 4.7 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 5 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 10 years Label: Union County Storm Event: TypeII 24hr (5.2 in) Scenario: Union County - Synthetic Curve, 10 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 4.7 4.7 4.7 4.7 4.7 17.500 4.7 4.8 4.8 4.8 4.8 18.000 4.8 4.8 4.8 4.8 4.8 18.500 4.8 4.8 4.9 4.9 4.9 19.000 4.9 4.9 4.9 4.9 4.9 19.500 4.9 4.9 4.9 4.9 4.9 20.000 5.0 5.0 5.0 5.0 5.0 20.500 5.0 5.0 5.0 5.0 5.0 21.000 5.0 5.0 5.0 5.0 5.0 21.500 5.0 5.1 5.1 5.1 5.1 22.000 5.1 5.1 5.1 5.1 5.1 22.500 5.1 5.1 5.1 5.1 5.1 23.000 5.1 5.1 5.2 5.2 5.2 23.500 5.2 5.2 5.2 5.2 5.2 24.000 5.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 6 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 25 yrs Time -Depth Curve: TypeII 24hr (6.2 in) Label TypeII 24hr (6.2 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 25 years Return Event: 25 years Storm Event: TypeII 24hr (6.2 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.0 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.1 0.1 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.2 0.2 0.2 0.2 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.3 0.3 0.3 4.500 0.3 0.4 0.4 0.4 0.4 5.000 0.4 0.4 0.4 0.4 0.4 5.500 0.4 0.5 0.5 0.5 0.5 6.000 0.5 0.5 0.5 0.5 0.5 6.500 0.6 0.6 0.6 0.6 0.6 7.000 0.6 0.6 0.6 0.7 0.7 7.500 0.7 0.7 0.7 0.7 0.7 8.000 0.7 0.8 0.8 0.8 0.8 8.500 0.8 0.8 0.9 0.9 0.9 9.000 0.9 0.9 1.0 1.0 1.0 9.500 1.0 1.0 1.1 1.1 1.1 10.000 1.1 1.1 1.2 1.2 1.2 10.500 1.3 1.3 1.3 1.4 1.4 11.000 1.5 1.5 1.6 1.6 1.7 11.500 1.8 1.9 2.2 2.7 3.5 12.000 4.1 4.2 4.3 4.4 4.5 12.500 4.6 4.6 4.7 4.7 4.7 13.000 4.8 4.8 4.9 4.9 4.9 13.500 5.0 5.0 5.0 5.0 5.1 14.000 5.1 5.1 5.1 5.2 5.2 14.500 5.2 5.2 5.2 5.3 5.3 15.000 5.3 5.3 5.3 5.3 5.4 15.500 5.4 5.4 5.4 5.4 5.4 16.000 5.5 5.5 5.5 5.5 5.5 16.500 5.5 5.5 5.6 5.6 5.6 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 7 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 25 years Label: Union County Storm Event: TypeII 24hr (6.2 in) Scenario: Union County - Synthetic Curve, 25 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 5.6 5.6 5.6 5.6 5.6 17.500 5.7 5.7 5.7 5.7 5.7 18.000 5.7 5.7 5.7 5.7 5.8 18.500 5.8 5.8 5.8 5.8 5.8 19.000 5.8 5.8 5.8 5.8 5.9 19.500 5.9 5.9 5.9 5.9 5.9 20.000 5.9 5.9 5.9 5.9 5.9 20.500 5.9 6.0 6.0 6.0 6.0 21.000 6.0 6.0 6.0 6.0 6.0 21.500 6.0 6.0 6.0 6.0 6.0 22.000 6.1 6.1 6.1 6.1 6.1 22.500 6.1 6.1 6.1 6.1 6.1 23.000 6.1 6.1 6.1 6.2 6.2 23.500 6.2 6.2 6.2 6.2 6.2 24.000 6.2 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 8 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 50 yrs Time -Depth Curve: TypeII 24hr (7.0 in) Label TypeII 24hr (7.0 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 50 years Return Event: 50 years Storm Event: TypeII 24hr (7.0 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.1 0.1 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.2 0.2 3.000 0.2 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.3 0.3 4.000 0.3 0.3 0.4 0.4 0.4 4.500 0.4 0.4 0.4 0.4 0.4 5.000 0.4 0.5 0.5 0.5 0.5 5.500 0.5 0.5 0.5 0.5 0.5 6.000 0.6 0.6 0.6 0.6 0.6 6.500 0.6 0.6 0.7 0.7 0.7 7.000 0.7 0.7 0.7 0.7 0.8 7.500 0.8 0.8 0.8 0.8 0.8 8.000 0.8 0.9 0.9 0.9 0.9 8.500 0.9 0.9 1.0 1.0 1.0 9.000 1.0 1.1 1.1 1.1 1.1 9.500 1.1 1.2 1.2 1.2 1.2 10.000 1.3 1.3 1.3 1.4 1.4 10.500 1.4 1.5 1.5 1.5 1.6 11.000 1.6 1.7 1.8 1.8 1.9 11.500 2.0 2.1 2.5 3.0 4.0 12.000 4.6 4.8 4.9 5.0 5.1 12.500 5.1 5.2 5.3 5.3 5.4 13.000 5.4 5.4 5.5 5.5 5.6 13.500 5.6 5.6 5.7 5.7 5.7 14.000 5.7 5.8 5.8 5.8 5.8 14.500 5.9 5.9 5.9 5.9 6.0 15.000 6.0 6.0 6.0 6.0 6.1 15.500 6.1 6.1 6.1 6.1 6.1 16.000 6.2 6.2 6.2 6.2 6.2 16.500 6.2 6.3 6.3 6.3 6.3 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 9 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 50 years Label: Union County Storm Event: TypeII 24hr (7.0 in) Scenario: Union County - Synthetic Curve, 50 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 6.3 6.3 6.3 6.4 6.4 17.500 6.4 6.4 6.4 6.4 6.4 18.000 6.4 6.5 6.5 6.5 6.5 18.500 6.5 6.5 6.5 6.5 6.6 19.000 6.6 6.6 6.6 6.6 6.6 19.500 6.6 6.6 6.6 6.6 6.7 20.000 6.7 6.7 6.7 6.7 6.7 20.500 6.7 6.7 6.7 6.7 6.7 21.000 6.8 6.8 6.8 6.8 6.8 21.500 6.8 6.8 6.8 6.8 6.8 22.000 6.8 6.8 6.9 6.9 6.9 22.500 6.9 6.9 6.9 6.9 6.9 23.000 6.9 6.9 6.9 6.9 7.0 23.500 7.0 7.0 7.0 7.0 7.0 24.000 7.0 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 10 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Label: Union County Scenario: Union County - Synthetic Curve, 100 yrs Time -Depth Curve: TypeII 24hr (7.9 in) Label TypeII 24hr (7.9 in) Start Time 0.000 hours Increment 0.100 hours End Time 24.000 hours Return Event 100 years Return Event: 100 years Storm Event: TypeII 24hr (7.9 in) CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 0.000 0.0 0.0 0.0 0.0 0.0 0.500 0.0 0.0 0.1 0.1 0.1 1.000 0.1 0.1 0.1 0.1 0.1 1.500 0.1 0.1 0.1 0.2 0.2 2.000 0.2 0.2 0.2 0.2 0.2 2.500 0.2 0.2 0.2 0.3 0.3 3.000 0.3 0.3 0.3 0.3 0.3 3.500 0.3 0.3 0.3 0.4 0.4 4.000 0.4 0.4 0.4 0.4 0.4 4.500 0.4 0.4 0.5 0.5 0.5 5.000 0.5 0.5 0.5 0.5 0.5 5.500 0.6 0.6 0.6 0.6 0.6 6.000 0.6 0.6 0.7 0.7 0.7 6.500 0.7 0.7 0.7 0.8 0.8 7.000 0.8 0.8 0.8 0.8 0.8 7.500 0.9 0.9 0.9 0.9 0.9 8.000 0.9 1.0 1.0 1.0 1.0 8.500 1.0 1.1 1.1 1.1 1.1 9.000 1.2 1.2 1.2 1.2 1.3 9.500 1.3 1.3 1.3 1.4 1.4 10.000 1.4 1.5 1.5 1.5 1.6 10.500 1.6 1.7 1.7 1.7 1.8 11.000 1.9 1.9 2.0 2.1 2.1 11.500 2.2 2.4 2.8 3.4 4.5 12.000 5.2 5.4 5.5 5.6 5.7 12.500 5.8 5.9 5.9 6.0 6.0 13.000 6.1 6.1 6.2 6.2 6.3 13.500 6.3 6.3 6.4 6.4 6.4 14.000 6.5 6.5 6.5 6.6 6.6 14.500 6.6 6.6 6.7 6.7 6.7 15.000 6.7 6.8 6.8 6.8 6.8 15.500 6.9 6.9 6.9 6.9 6.9 16.000 7.0 7.0 7.0 7.0 7.0 16.500 7.0 7.1 7.1 7.1 7.1 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 11 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time -Depth Curve Return Event: 100 years Label: Union County Storm Event: TypeII 24hr (7.9 in) Scenario: Union County - Synthetic Curve, 100 yrs CUMULATIVE RAINFALL (in) Output Time Increment = 0.100 hours Time on left represents time for first value in each row. Time Depth Depth Depth Depth Depth (hours) (in) (in) (in) (in) (in) 17.000 7.1 7.1 7.2 7.2 7.2 17.500 7.2 7.2 7.2 7.2 7.3 18.000 7.3 7.3 7.3 7.3 7.3 18.500 7.3 7.4 7.4 7.4 7.4 19.000 7.4 7.4 7.4 7.4 7.5 19.500 7.5 7.5 7.5 7.5 7.5 20.000 7.5 7.5 7.5 7.6 7.6 20.500 7.6 7.6 7.6 7.6 7.6 21.000 7.6 7.6 7.6 7.7 7.7 21.500 7.7 7.7 7.7 7.7 7.7 22.000 7.7 7.7 7.7 7.7 7.8 22.500 7.8 7.8 7.8 7.8 7.8 23.000 7.8 7.8 7.8 7.8 7.8 23.500 7.9 7.9 7.9 7.9 7.9 24.000 7.9 (N/A) (N/A) (N/A) (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 12 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Label: POST -AREA Scenario: Union County - Synthetic Curve, 2 yrs Time of Concentration Results Segment #1: User Defined Tc Time of Concentration 0.083 hours Time of Concentration (Composite) Time of Concentration 0.083 hours (Composite) Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 13 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Time of Concentration Calculations Return Event: 2 years Label: POST -AREA Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs ==== User Defined Tc = Value entered by user Where: Tc= Time of concentration, hours Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 14 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Runoff CN-Area Label: POST -AREA Scenario: Union County - Synthetic Curve, 2 yrs Runoff Curve Number Data Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Soil/Surface Description CN Area C UC Adjusted CN (acres) (%) (%) Impervious Areas - Paved parking lots, 98.000 4.100 0.0 0.0 98.000 roofs, driveways, Streets and roads Open space (Lawns,parks etc.) - Good 61.000 8.540 0.0 0.0 61.000 condition; grass cover > 75% - Soil B COMPOSITE AREA & WEIGHTED CN ---> (N/A) 12.640 (N/A) (N/A) 73.002 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 15 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Elevation -Area Volume Curve Label: BMP-2 Scenario: Union County - Synthetic Curve, 2 yrs Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Elevation Planimeter Area Al+A2+sgr(Al*A Volume Volume (Total) (ft) (ftz) (acres) 2) (ft3) (ft3) (acres) 576.00 0.0 0.569 0.000 0.000 0.000 576.50 0.0 0.629 1.796 13,041.000 13,041.000 577.00 0.0 0.676 1.957 14,208.000 27,249.000 578.00 0.0 0.729 2.107 30,594.000 57,843.000 579.00 0.0 0.784 2.269 32,946.000 90,789.000 580.00 0.0 0.840 2.436 35,364.000 126,152.000 581.00 0.0 0.898 2.607 37,847.000 163,999.000 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 16 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Requested Pond Water Surface Elevations Minimum (Headwater) 576.00 ft Increment (Headwater) 0.50 ft Maximum (Headwater) 581.00 ft Outlet Connectivity Structure Type Outlet ID Direction Outfall E1 E2 (ft) (ft) Orifice -Area Orifice - Forward CO 577.25 581.00 2yr Inlet Box RO Forward CO 579.50 581.00 Orifice -Circular Orifice - Forward CO 576.00 581.00 WQ Culvert -Circular CO Forward TW 573.00 581.00 Rectangular Weir Weir - 1 Forward TW 578.00 581.00 Orifice -Area Orifice - Forward TW 578.25 581.00 25yr Tailwater Settings 1 Tailwater I I I (N/A) I (N/A) Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 17 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 2 yrs Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Structure ID: RO Structure Type: Inlet Box Number of Openings 1 Elevation 579.50 ft Orifice Area 16.0 ftz Orifice Coefficient 0.600 Weir Length 16.00 ft Weir Coefficient 3.00 (ft^0.5)/s K Reverse 1.000 Manning's n 0.000 Kev, Charged Riser 0.000 Weir Submergence False Orifice H to crest False Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 18 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Structure ID: CO Structure Type: Culvert -Circular Number of Barrels 1 Diameter 30.0 in Length 64.06 ft Length (Computed Barrel) 64.18 ft Slope (Computed) 0.062 ft/ft Outlet Control Data Manning's n 0.013 Ke 0.200 Kb 0.009 Kr 0.000 Convergence Tolerance 0.00 ft Inlet Control Data Equation Form Form 1 K 0.0045 M 2.0000 C 0.0317 Y 0.6900 T1 ratio (HW/D) 1.064 T2 ratio (HW/D) 1.166 Slope Correction Factor -0.500 Use unsubmerged inlet control 0 equation below T1 elevation. Use submerged inlet control 0 equation above T2 elevation In transition zone between unsubmerged and submerged inlet control, interpolate between flows at T1 & T2... T1 Elevation 575.66 ft T1 Flow 27.16 ft3/s T2 Elevation 575.91 ft T2 Flow 31.05 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 19 of 22 Watertown, CT 06795 USA +1-203-755-1666 Subsection: Outlet Input Data Label: Riser-1 Scenario: Union County - Synthetic Curve, 2 yrs BMP-2 POST.ppc 2/28/2022 Return Event: 2 years Storm Event: TypeII 24hr (3.6 in) Structure ID: Orifice - WQ Structure Type: Orifice -Circular Number of Openings 1 Elevation 576.00 ft Orifice Diameter 2.5 in Orifice Coefficient 0.600 Structure ID: Orifice - 2yr Structure Type: Orifice -Area Number of Openings 1 Elevation 577.25 ft Orifice Area 0.8 ftz Top Elevation 577.50 ft Datum Elevation 577.25 ft Orifice Coefficient 0.600 Structure ID: Orifice - 25yr Structure Type: Orifice -Area Number of Openings 1 Elevation 578.25 ft Orifice Area 0.8 ftz Top Elevation 578.50 ft Datum Elevation 578.25 ft Orifice Coefficient 0.600 Structure ID: Weir- 1 Structure Type: Rectangular Weir Number of Openings 1 Elevation 578.00 ft Weir Length 30.00 ft Weir Coefficient 3.00 (ft^0.5)/s Structure ID: TW Structure Type: TW Setup, DS Channel Tailwater Type Free Outfall Convergence Tolerances Maximum Iterations 40 Tailwater Tolerance 0.01 ft (Minimum) Tailwater Tolerance 0.50 ft (Maximum) Headwater Tolerance 0.01 ft (Minimum) Bentley Systems, Inc. Haestad Methods Solution Center 27 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Pond Pack CONNECT Edition [10.02.00.01] Page 20 of 22 Subsection: Outlet Input Data Return Event: 2 years Label: Riser-1 Storm Event: TypeII 24hr (3.6 in) Scenario: Union County - Synthetic Curve, 2 yrs Convergence Tolerances Headwater Tolerance 0.50 ft (Maximum) Flow Tolerance (Minimum) 0.001 ft3/s Flow Tolerance (Maximum) 10.000 ft3/s Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 21 of 22 Watertown, CT 06795 USA +1-203-755-1666 Index BMP-2 (Elevation -Area Volume Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 16 Master Network Summary ... 1, 2 POST -AREA (Runoff CN-Area, 2 years (Union County - Synthetic Curve, 2 yrs))... 15 POST -AREA (Time of Concentration Calculations, 2 years (Union County - Synthetic Curve, 2 yrs))... 13, 14 Riser-1 (Outlet Input Data, 2 years (Union County - Synthetic Curve, 2 yrs))...17, 18, 19, 20, 21 U Union County (Time -Depth Curve, 10 years (Union County - Synthetic Curve, 10 yrs))... 5, 6 Union County (Time -Depth Curve, 100 years (Union County - Synthetic Curve, 100 yrs))... 11, 12 Union County (Time -Depth Curve, 2 years (Union County - Synthetic Curve, 2 yrs))... 3, 4 Union County (Time -Depth Curve, 25 years (Union County - Synthetic Curve, 25 yrs))... 7, 8 Union County (Time -Depth Curve, 50 years (Union County - Synthetic Curve, 50 yrs))... 9, 10 Bentley Systems, Inc. Haestad Methods Solution Pond Pack CONNECT Edition BMP-2 POST.ppc Center [10.02.00.01] 2/28/2022 27 Siemon Company Drive Suite 200 W Page 22 of 22 Watertown, CT 06795 USA +1-203-755-1666 Buoyancy Calculations: Bouyancy Calculations - BMP-1 Volume of Water Displaced (Structure) Structure Dimensions: Inner Length = 4 Feet Inner Width = 4 Feet Thickness = 0.58 Feet Height = 8.15 Feet Volume = 217 Cubic Feet Specific Weight of Water = 62.4 Pounds per Cubic Foot Weight of Displaced Volume = 13,541 Pounds Volume of Water Displaced (Base): Structure Dimensions: Flange = 1.92 Feet Length = 9 Feet Width = 9 Feet Height = 2.5 Feet Volume = 203 Cubic Feet Specific Weight of Water = 62.4 Pounds per Cubic Foot Weight of Displaced Volume = 12,636 Pounds Total Weight of Displaced Volume = 26,177 Pounds Concrete Volume of Structure Concrete Volume: Inner Length = 4 Feet Inner Width = 4 Feet Thickness = 0.58 Feet Height = 8.15 Feet Volume = 87 Cubic Feet Specific Weight of Concrete = 150 Pounds per Cubic Foot Weight of Concrete = 12,990 Pounds Volume of Concrete Required (Base): Concrete Volume: Flange = 1.92 Feet Length = 9 Feet Width = 9 Feet Height = 2.5 Feet Volume = 203 Cubic Feet Specific Weight of Concrete = 150 Pounds per Cubic Foot Weight of Concrete = 30,375 Pounds Total Weight of Concrete = 43,365 Pounds Factor of Safety (Minimum = 1) = 1.66 Bouyancy Calculations - BMP-2 Volume of Water Displaced (Structure) Structure Dimensions: Inner Length = 4 Feet Inner Width = 4 Feet Thickness = 0.58 Feet Height = 7.1 Feet Volume = 189 Cubic Feet Specific Weight of Water = 62.4 Pounds per Cubic Foot Weight of Displaced Volume = 11,796 Pounds Volume of Water Displaced (Base): Structure Dimensions: Flange = 1.92 Feet Length = 9 Feet Width = 9 Feet Height = 2.5 Feet Volume = 203 Cubic Feet Specific Weight of Water = 62.4 Pounds per Cubic Foot Weight of Displaced Volume = 12,636 Pounds Total Weight of Displaced Volume = 24,432 Pounds Concrete Volume of Structure Concrete Volume: Inner Length = 4 Feet Inner Width = 4 Feet Thickness = 0.58 Feet Height = 7.1 Feet Volume = 75 Cubic Feet Specific Weight of Concrete = 150 Pounds per Cubic Foot Weight of Concrete = 11,316 Pounds Volume of Concrete Required (Base): Concrete Volume: Flange = 1.92 Feet Length = 9 Feet Width = 9 Feet Height = 2.5 Feet Volume = 203 Cubic Feet Specific Weight of Concrete = 150 Pounds per Cubic Foot Weight of Concrete = 30,375 Pounds Total Weight of Concrete = 41,691 Pounds Factor of Safety (Minimum = 1) = 1.71 Rip Rap Calculations: PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL: 3 Do Q = 12.60 CFS DISCHARGE, FT3 / SEC v m N Z 30 Z � O c C 3 r m aI �o a0 4 m � p O Z C� Z 3 w O 3 O 3 N Z a A O 2 c a Z � N v o v � a� 1 3 m m D50 = 0.5' m O O 500 1000 c r r PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL: 3 Do Q=10.74CFS DISCHARGE, FT3 / SEC v m N Z O Z � � O c C 3 r � m a� �o aIS 4 p O Z C� Z F- 3 w O 3 -Cl LL O 3 Ld Z N .N a A O 2 c a � Z � N v o v � a� 1 m D50 = 0.5' m O G) 1000 c r r Storm Drainage Calculations: CI-102 GUTTER Project Description Solve For Spread Input Data Discharge 2.10 cfs Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 6.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 6.0 ft Opening Height 0.5 ft Curb Throat Type Horizontal Throat Incline Angle 90.00 degrees Options Calculation Option Use Both Results Spread 7.4 ft Depth 1.8 in Gutter Depression 0.0 in Total Depression 2.0 in Open Grate Area 5.4 ftz Active Grate Weir Length 8.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 CI-103 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.74 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 82.41 % Intercepted Flow 0.61 cfs Bypass Flow 0.13 cfs Spread 6.0 ft Depth 1.4 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.09 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.083 Grate Flow Ratio 0.665 Equivalent Cross Slope 0.075 ft/ft Active Grate Length 1.5 ft Length Factor 0.177 Total Interception Length 8.5 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-103A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.84 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 80.14 % Intercepted Flow 0.67 cfs Bypass Flow 0.17 cfs Spread 6.2 ft Depth 1.5 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.15 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.079 Grate Flow Ratio 0.643 Equivalent Cross Slope 0.074 ft/ft Active Grate Length 1.5 ft Length Factor 0.165 Total Interception Length 9.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-104 GUTTER Project Description Solve For Efficiency Input Data Discharge 1.26 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 6.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 6.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 86.87 % Intercepted Flow 1.09 cfs Bypass Flow 0.17 cfs Spread 7.3 ft Depth 1.7 in Flow Area 0.5 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.38 ft/s Splash Over Velocity 9.97 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.259 Grate Flow Ratio 0.576 Equivalent Cross Slope 0.068 ft/ft Active Grate Length 3.0 ft Length Factor 0.266 Total Interception Length 11.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-104A GUTTER Project Description Solve For Efficiency Input Data Discharge 1.27 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 6.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 6.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 86.74 % Intercepted Flow 1.10 cfs Bypass Flow 0.17 cfs Spread 7.3 ft Depth 1.8 in Flow Area 0.5 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.39 ft/s Splash Over Velocity 9.97 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.258 Grate Flow Ratio 0.575 Equivalent Cross Slope 0.068 ft/ft Active Grate Length 3.0 ft Length Factor 0.265 Total Interception Length 11.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-105 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.87 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 79.50 % Intercepted Flow 0.69 cfs Bypass Flow 0.18 cfs Spread 6.3 ft Depth 1.5 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.17 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.077 Grate Flow Ratio 0.637 Equivalent Cross Slope 0.073 ft/ft Active Grate Length 1.5 ft Length Factor 0.162 Total Interception Length 9.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-105A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.88 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 79.29 % Intercepted Flow 0.70 cfs Bypass Flow 0.18 cfs Spread 6.4 ft Depth 1.5 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.18 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.077 Grate Flow Ratio 0.635 Equivalent Cross Slope 0.073 ft/ft Active Grate Length 1.5 ft Length Factor 0.161 Total Interception Length 9.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-106 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.89 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 79.08 % Intercepted Flow 0.70 cfs Bypass Flow 0.19 cfs Spread 6.4 ft Depth 1.5 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.18 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.077 Grate Flow Ratio 0.633 Equivalent Cross Slope 0.073 ft/ft Active Grate Length 1.5 ft Length Factor 0.160 Total Interception Length 9.4 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-106A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.93 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 78.28 % Intercepted Flow 0.73 cfs Bypass Flow 0.20 cfs Spread 6.5 ft Depth 1.6 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.21 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.075 Grate Flow Ratio 0.626 Equivalent Cross Slope 0.072 ft/ft Active Grate Length 1.5 ft Length Factor 0.156 Total Interception Length 9.6 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-107 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.95 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 77.89 % Intercepted Flow 0.74 cfs Bypass Flow 0.21 cfs Spread 6.5 ft Depth 1.6 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.22 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.075 Grate Flow Ratio 0.623 Equivalent Cross Slope 0.072 ft/ft Active Grate Length 1.5 ft Length Factor 0.155 Total Interception Length 9.7 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-107A GUTTER Project Description Solve For Efficiency Input Data Discharge 1.05 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 76.03 % Intercepted Flow 0.80 cfs Bypass Flow 0.25 cfs Spread 6.8 ft Depth 1.6 in Flow Area 0.5 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.28 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.072 Grate Flow Ratio 0.606 Equivalent Cross Slope 0.070 ft/ft Active Grate Length 1.5 ft Length Factor 0.147 Total Interception Length 10.2 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-108 GUTTER Project Description Solve For Efficiency Input Data Discharge 1.09 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 75.33 % Intercepted Flow 0.82 cfs Bypass Flow 0.27 cfs Spread 6.9 ft Depth 1.7 in Flow Area 0.5 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.30 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.070 Grate Flow Ratio 0.600 Equivalent Cross Slope 0.070 ft/ft Active Grate Length 1.5 ft Length Factor 0.144 Total Interception Length 10.4 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-108A GUTTER Project Description Solve For Efficiency Input Data Discharge 1.31 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 71.89 % Intercepted Flow 0.94 cfs Bypass Flow 0.37 cfs Spread 7.4 ft Depth 1.8 in Flow Area 0.5 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.41 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.065 Grate Flow Ratio 0.570 Equivalent Cross Slope 0.067 ft/ft Active Grate Length 1.5 ft Length Factor 0.130 Total Interception Length 11.5 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-109 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.11 cfs Slope 0.026 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 100.00 % Intercepted Flow 0.11 cfs Bypass Flow 0.00 cfs Spread 2.4 ft Depth 0.6 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.84 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.102 Grate Flow Ratio 0.989 Equivalent Cross Slope 0.102 ft/ft Active Grate Length 1.5 ft Length Factor 0.357 Total Interception Length 4.2 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-109A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.23 cfs Slope 0.026 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 98.75 % Intercepted Flow 0.23 cfs Bypass Flow 0.00 cfs Spread 3.2 ft Depth 0.8 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.21 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.075 Grate Flow Ratio 0.925 Equivalent Cross Slope 0.097 ft/ft Active Grate Length 1.5 ft Length Factor 0.254 Total Interception Length 5.9 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CIA 10 GUTTER Project Description Solve For Spread Input Data Discharge 0.58 cfs Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Opening Height 0.5 ft Curb Throat Type Horizontal Throat Incline Angle 90.00 degrees Options Calculation Option Use Both Results Spread 3.6 ft Depth 0.9 in Gutter Depression 0.0 in Total Depression 2.0 in Open Grate Area 2.7 ftz Active Grate Weir Length 5.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 CIA I I GUTTER Project Description Solve For Spread Input Data Discharge 1.87 cfs Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 6.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 6.0 ft Opening Height 0.5 ft Curb Throat Type Horizontal Throat Incline Angle 90.00 degrees Options Calculation Option Use Both Results Spread 6.9 ft Depth 1.7 in Gutter Depression 0.0 in Total Depression 2.0 in Open Grate Area 5.4 ftz Active Grate Weir Length 8.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 CIA 12 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.55 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 87.45 % Intercepted Flow 0.48 cfs Bypass Flow 0.07 cfs Spread 5.3 ft Depth 1.3 in Flow Area 0.3 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.94 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.093 Grate Flow Ratio 0.715 Equivalent Cross Slope 0.080 ft/ft Active Grate Length 1.5 ft Length Factor 0.207 Total Interception Length 7.2 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-201 GUTTER Project Description Solve For Spread Input Data Discharge 1.84 cfs Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 6.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 6.0 ft Opening Height 0.5 ft Curb Throat Type Horizontal Throat Incline Angle 90.00 degrees Options Calculation Option Use Both Results Spread 6.8 ft Depth 1.6 in Gutter Depression 0.0 in Total Depression 2.0 in Open Grate Area 5.4 ftz Active Grate Weir Length 8.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 1 Watertown, CT 06795 USA + 1 -203-755-1666 CI-202 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.81 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 85.80 % Intercepted Flow 0.69 cfs Bypass Flow 0.12 cfs Spread 4.6 ft Depth 1.1 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.81 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.030 Grate Flow Ratio 0.781 Equivalent Cross Slope 0.085 ft/ft Active Grate Length 1.5 ft Length Factor 0.115 Total Interception Length 13.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-202A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.78 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 86.41 % Intercepted Flow 0.67 cfs Bypass Flow 0.11 cfs Spread 4.5 ft Depth 1.1 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.78 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.030 Grate Flow Ratio 0.787 Equivalent Cross Slope 0.086 ft/ft Active Grate Length 1.5 ft Length Factor 0.117 Total Interception Length 12.8 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-203 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.79 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 86.20 % Intercepted Flow 0.68 cfs Bypass Flow 0.11 cfs Spread 4.6 ft Depth 1.1 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.79 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.030 Grate Flow Ratio 0.785 Equivalent Cross Slope 0.085 ft/ft Active Grate Length 1.5 ft Length Factor 0.117 Total Interception Length 12.9 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-203A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.76 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 86.82 % Intercepted Flow 0.66 cfs Bypass Flow 0.10 cfs Spread 4.5 ft Depth 1.1 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.75 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.030 Grate Flow Ratio 0.792 Equivalent Cross Slope 0.086 ft/ft Active Grate Length 1.5 ft Length Factor 0.119 Total Interception Length 12.6 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-204 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.44 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 94.37 % Intercepted Flow 0.42 cfs Bypass Flow 0.02 cfs Spread 3.7 ft Depth 0.9 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.27 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.039 Grate Flow Ratio 0.878 Equivalent Cross Slope 0.093 ft/ft Active Grate Length 1.5 ft Length Factor 0.157 Total Interception Length 9.6 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-204A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.49 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 93.09 % Intercepted Flow 0.46 cfs Bypass Flow 0.03 cfs Spread 3.8 ft Depth 0.9 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.36 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.037 Grate Flow Ratio 0.862 Equivalent Cross Slope 0.092 ft/ft Active Grate Length 1.5 ft Length Factor 0.149 Total Interception Length 10.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-205 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.04 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 100.00 % Intercepted Flow 0.04 cfs Bypass Flow 0.00 cfs Spread 1.5 ft Depth 0.4 in Flow Area 0.0 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.80 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.106 Grate Flow Ratio 1.000 Equivalent Cross Slope 0.103 ft/ft Active Grate Length 1.5 ft Length Factor 0.457 Total Interception Length 3.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-205A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.13 cfs Slope 0.047 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 100.00 % Intercepted Flow 0.13 cfs Bypass Flow 0.00 cfs Spread 2.3 ft Depth 0.6 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.41 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.065 Grate Flow Ratio 0.995 Equivalent Cross Slope 0.103 ft/ft Active Grate Length 1.5 ft Length Factor 0.278 Total Interception Length 5.4 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-206 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.04 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 100.00 % Intercepted Flow 0.04 cfs Bypass Flow 0.00 cfs Spread 1.6 ft Depth 0.4 in Flow Area 0.0 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.62 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.125 Grate Flow Ratio 1.000 Equivalent Cross Slope 0.103 ft/ft Active Grate Length 1.5 ft Length Factor 0.498 Total Interception Length 3.0 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-207 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.57 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 90.09 % Intercepted Flow 0.51 cfs Bypass Flow 0.06 cfs Spread 4.3 ft Depth 1.0 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.14 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.041 Grate Flow Ratio 0.816 Equivalent Cross Slope 0.088 ft/ft Active Grate Length 1.5 ft Length Factor 0.148 Total Interception Length 10.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-207A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.47 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 92.73 % Intercepted Flow 0.44 cfs Bypass Flow 0.03 cfs Spread 4.0 ft Depth 1.0 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.99 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.045 Grate Flow Ratio 0.847 Equivalent Cross Slope 0.091 ft/ft Active Grate Length 1.5 ft Length Factor 0.163 Total Interception Length 9.2 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-208 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.57 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 90.09 % Intercepted Flow 0.51 cfs Bypass Flow 0.06 cfs Spread 4.3 ft Depth 1.0 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.14 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.041 Grate Flow Ratio 0.816 Equivalent Cross Slope 0.088 ft/ft Active Grate Length 1.5 ft Length Factor 0.148 Total Interception Length 10.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-208A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.47 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 92.73 % Intercepted Flow 0.44 cfs Bypass Flow 0.03 cfs Spread 4.0 ft Depth 1.0 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.99 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.045 Grate Flow Ratio 0.847 Equivalent Cross Slope 0.091 ft/ft Active Grate Length 1.5 ft Length Factor 0.163 Total Interception Length 9.2 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-209 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.76 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 85.65 % Intercepted Flow 0.65 cfs Bypass Flow 0.11 cfs Spread 4.7 ft Depth 1.1 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.38 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.037 Grate Flow Ratio 0.768 Equivalent Cross Slope 0.084 ft/ft Active Grate Length 1.5 ft Length Factor 0.128 Total Interception Length 11.8 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-209A GUTTER Project Description Solve For Efficiency Input Data Discharge 0.06 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 100.00 % Intercepted Flow 0.06 cfs Bypass Flow 0.00 cfs Spread 2.3 ft Depth 0.6 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.11 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.218 Grate Flow Ratio 0.995 Equivalent Cross Slope 0.103 ft/ft Active Grate Length 1.5 ft Length Factor 0.612 Total Interception Length 2.4 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-209B GUTTER Project Description Solve For Efficiency Input Data Discharge 0.14 cfs Slope 0.010 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 99.94 % Intercepted Flow 0.14 cfs Bypass Flow 0.00 cfs Spread 3.2 ft Depth 0.8 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 1.38 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.160 Grate Flow Ratio 0.928 Equivalent Cross Slope 0.097 ft/ft Active Grate Length 1.5 ft Length Factor 0.415 Total Interception Length 3.6 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-209C GUTTER Project Description Solve For Efficiency Input Data Discharge 1.08 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 79.66 % Intercepted Flow 0.86 cfs Bypass Flow 0.22 cfs Spread 5.4 ft Depth 1.3 in Flow Area 0.3 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.69 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.031 Grate Flow Ratio 0.708 Equivalent Cross Slope 0.079 ft/ft Active Grate Length 1.5 ft Length Factor 0.106 Total Interception Length 14.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-209D GUTTER Project Description Solve For Efficiency Input Data Discharge 0.26 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 98.44 % Intercepted Flow 0.26 cfs Bypass Flow 0.00 cfs Spread 3.2 ft Depth 0.8 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.58 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.058 Grate Flow Ratio 0.930 Equivalent Cross Slope 0.097 ft/ft Active Grate Length 1.5 ft Length Factor 0.219 Total Interception Length 6.9 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-303 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.46 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 93.00 % Intercepted Flow 0.43 cfs Bypass Flow 0.03 cfs Spread 3.9 ft Depth 0.9 in Flow Area 0.2 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.98 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.045 Grate Flow Ratio 0.850 Equivalent Cross Slope 0.091 ft/ft Active Grate Length 1.5 ft Length Factor 0.165 Total Interception Length 9.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-303A GUTTER Project Description Solve For Efficiency Input Data Discharge 1.58 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 72.82 % Intercepted Flow 1.15 cfs Bypass Flow 0.43 cfs Spread 6.2 ft Depth 1.5 in Flow Area 0.4 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 4.05 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.027 Grate Flow Ratio 0.643 Equivalent Cross Slope 0.074 ft/ft Active Grate Length 1.5 ft Length Factor 0.087 Total Interception Length 17.3 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-304 GUTTER Project Description Solve For Efficiency Input Data Discharge 0.28 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 97.95 % Intercepted Flow 0.27 cfs Bypass Flow 0.01 cfs Spread 3.3 ft Depth 0.8 in Flow Area 0.1 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 2.63 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.056 Grate Flow Ratio 0.921 Equivalent Cross Slope 0.097 ft/ft Active Grate Length 1.5 ft Length Factor 0.211 Total Interception Length 7.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 CI-305 GUTTER Project Description Solve For Efficiency Input Data Discharge 1.22 cfs Slope 0.036 ft/ft Gutter Width 2.00 ft Gutter Cross Slope 0.020 ft/ft Road Cross Slope 0.020 ft/ft Roughness Coefficient 0.013 Local Depression 2.0 in Local Depression Width 24.0 in Grate Width 2.00 ft Grate Length 3.0 ft Grate Type P-50 mm (P-1 -7/8") Clogging 50.0 % Curb Opening Length 3.0 ft Options Calculation Option Use Both Grate Flow Option Exclude None Results Efficiency 77.49 % Intercepted Flow 0.95 cfs Bypass Flow 0.27 cfs Spread 5.7 ft Depth 1.4 in Flow Area 0.3 ftz Gutter Depression 0.0 in Total Depression 2.0 in Velocity 3.80 ft/s Splash Over Velocity 6.99 ft/s Frontal Flow Factor 1.000 Side Flow Factor 0.030 Grate Flow Ratio 0.687 Equivalent Cross Slope 0.077 ft/ft Active Grate Length 1.5 ft Length Factor 0.099 Total Interception Length 15.1 ft Bentley Systems, Inc. Haestad Methods Solution FlowMaster Gutter Spread - The Bluffs.fm8 Center [10.03.00.03] 2/9/2022 27 Siemon Company Drive Suite 200 W Page 1 of 2 Watertown, CT 06795 USA + 1 -203-755-1666 Storm Drainage Calculations -10 Year: STORM CAD ANALYSIS RESULTS (HEC-22 Energy Headloss Method) Project: The Bluffs at Wesley Chapel Job No.: 1021119 Location: Union County, NC Storm Design: 10 Year Storm Drainage Calculations - 25 Year: STORM CAD ANALYSIS RESULTS (HEC-22 Energy Headloss Method) Project: The Bluffs at Wesley Chapel Job No.: 1021119 Location: Union County, NC Storm Design: 25 Year