This document provides an overview of a stormwater management plan for the Sea Aire subdivision in Charleston, SC. The goals are to meet state regulations by ensuring peak flows during 2-year and 25-year storms don't exceed pre-development levels and post-development runoff volume doesn't exceed pre-development levels. Various low impact development techniques are considered, including rain gardens, permeable pavement, green roofs, and constructed wetlands. Hydrologic modeling is used to analyze impacts and design approaches are evaluated to select an optimal final design incorporating multiple low impact development techniques.
This document outlines a stormwater management plan for the Sea Aire subdivision in Charleston, SC. It discusses the problem of increased runoff from development, goals of meeting state regulations, and constraints like cost and skills. It considers questions from users, clients, and designers. The plan evaluates conventional and low impact development stormwater methods like green roofs, rain gardens, and permeable pavement. Hydraulic modeling is used to analyze runoff and select options like vegetated roofs, rain barrels, infiltration trenches and bioretention cells that together can store runoff from a 25-year storm on individual properties. The plan addresses sustainability, budget, timeline and references.
The document presents the problem, goals, constraints, and considerations for designing a stormwater management plan for the Sea Aire residential subdivision. The problem is that developing the site will increase impervious surfaces and stormwater runoff. The goals are to meet regulatory requirements for peak flow rates and runoff volumes from 2-year and 25-year storms. Constraints include existing site conditions, sustainability, safety, and budget. The document reviews governing equations, conventional vs LID methods, and alternative design options like detention basins, wetlands, and LID techniques. It evaluates using LID techniques like rain gardens and permeable pavement on individual residential lots to meet stormwater goals in a cost-effective and sustainable way.
Maryland Environmental Site Design PresentationTheodore Scott
Overview presentation by Theodore E. Scott, PE, CPESC, LEED AP on recent changes to the Maryland Stormwater Management Design Manual that requires the use of Environmental Site Design (ESD).
Urban Planning Design Considerations for Better Water Quality, Bill Hunt NC S...Fu Michael Justin
This document discusses various studies and case studies related to the impacts of development on water quality. It summarizes that effective solutions require maintaining watershed hydrology through low impact development techniques like reducing impervious surfaces, incorporating bioretention areas, and maintaining wetlands and riparian buffers. A case study of the Carpenter Village development showed positive results from using clustered housing, narrow streets, integrated open space and bioretention to minimize impacts on water quality.
A compilation of case studies highlighting the advantages of a wet pond solution provided by Contech Engineered Solutions that will meet (and sometimes exceed) the TSS
mandates stipulated by the Wisconsin Department of Natural Resources.
Environmental Site Design (ESD) PresentationTheodore Scott
The document discusses Maryland's Environmental Site Design (ESD) philosophy and guidelines for stormwater management. The key aspects of ESD include replicating pre-development hydrology using small-scale practices and non-structural techniques. ESD emphasizes site planning techniques, minimizing impervious surfaces, and infiltration to the maximum extent practicable before using structural controls. The document outlines Maryland's regulations and design manual updates to incorporate ESD principles and the move away from conventional end-of-pipe approaches.
This document summarizes Philadelphia's 25-year plan to implement green infrastructure and reduce combined sewer overflows. The plan includes installing green stormwater infrastructure on public and private properties, incentivizing private retrofits, and updating regulations for new development. After 5 years, targets for interceptor lining, overflow reduction, and greened acres were exceeded. Future plans include doubling greened acreage in years 6-10. Monitoring shows green infrastructure is performing better than predicted in terms of infiltration and storage capacity. The plan's environmental, social, and economic benefits create a triple bottom line return on investment.
This document outlines a stormwater management plan for the Sea Aire subdivision in Charleston, SC. It discusses the problem of increased runoff from development, goals of meeting state regulations, and constraints like cost and skills. It considers questions from users, clients, and designers. The plan evaluates conventional and low impact development stormwater methods like green roofs, rain gardens, and permeable pavement. Hydraulic modeling is used to analyze runoff and select options like vegetated roofs, rain barrels, infiltration trenches and bioretention cells that together can store runoff from a 25-year storm on individual properties. The plan addresses sustainability, budget, timeline and references.
The document presents the problem, goals, constraints, and considerations for designing a stormwater management plan for the Sea Aire residential subdivision. The problem is that developing the site will increase impervious surfaces and stormwater runoff. The goals are to meet regulatory requirements for peak flow rates and runoff volumes from 2-year and 25-year storms. Constraints include existing site conditions, sustainability, safety, and budget. The document reviews governing equations, conventional vs LID methods, and alternative design options like detention basins, wetlands, and LID techniques. It evaluates using LID techniques like rain gardens and permeable pavement on individual residential lots to meet stormwater goals in a cost-effective and sustainable way.
Maryland Environmental Site Design PresentationTheodore Scott
Overview presentation by Theodore E. Scott, PE, CPESC, LEED AP on recent changes to the Maryland Stormwater Management Design Manual that requires the use of Environmental Site Design (ESD).
Urban Planning Design Considerations for Better Water Quality, Bill Hunt NC S...Fu Michael Justin
This document discusses various studies and case studies related to the impacts of development on water quality. It summarizes that effective solutions require maintaining watershed hydrology through low impact development techniques like reducing impervious surfaces, incorporating bioretention areas, and maintaining wetlands and riparian buffers. A case study of the Carpenter Village development showed positive results from using clustered housing, narrow streets, integrated open space and bioretention to minimize impacts on water quality.
A compilation of case studies highlighting the advantages of a wet pond solution provided by Contech Engineered Solutions that will meet (and sometimes exceed) the TSS
mandates stipulated by the Wisconsin Department of Natural Resources.
Environmental Site Design (ESD) PresentationTheodore Scott
The document discusses Maryland's Environmental Site Design (ESD) philosophy and guidelines for stormwater management. The key aspects of ESD include replicating pre-development hydrology using small-scale practices and non-structural techniques. ESD emphasizes site planning techniques, minimizing impervious surfaces, and infiltration to the maximum extent practicable before using structural controls. The document outlines Maryland's regulations and design manual updates to incorporate ESD principles and the move away from conventional end-of-pipe approaches.
This document summarizes Philadelphia's 25-year plan to implement green infrastructure and reduce combined sewer overflows. The plan includes installing green stormwater infrastructure on public and private properties, incentivizing private retrofits, and updating regulations for new development. After 5 years, targets for interceptor lining, overflow reduction, and greened acres were exceeded. Future plans include doubling greened acreage in years 6-10. Monitoring shows green infrastructure is performing better than predicted in terms of infiltration and storage capacity. The plan's environmental, social, and economic benefits create a triple bottom line return on investment.
Low impact development (LID) is an approach to land development that emphasizes using small-scale stormwater management practices, green infrastructure, and environmental site design for the purpose of maintaining pre-development hydrologic conditions. The presentation discusses the benefits of LID for residents, developers, communities, and the environment. It outlines five basic principles of LID design and provides examples of entities that have adopted LID standards or are in the process of adopting them. The presentation argues for a mandatory rather than voluntary approach to implementing LID and provides strategies for getting political acceptance and introducing LID requirements through ordinances, standards, and education.
This document summarizes a study on stormwater impacts to McVicar Creek. The study aimed to: identify impacts; characterize them through a stream assessment; identify 3 representative sites; pursue further research; and develop remediation recommendations. The initial assessment identified 3 sites - Court Street, Castlegreen, and County Fair - for further study. Additional data collection and stakeholder workshops were held. The workshops developed stormwater management objectives and site-specific recommendations. For Court Street, increased enforcement and education were recommended. For Castlegreen, investigating infrastructure and partnering with local groups. For County Fair, educating landowners and considering end-of-pipe solutions were recommended. The final recommendations emphasized objectives and further stakeholder
This document discusses Griffin's expertise in dewatering and groundwater control since 1934. It provides information on Griffin's pumps and equipment, filtration and treatment systems, engineering capabilities, and approach to ash pond dewatering projects. Griffin offers customized solutions including modeling, design, installation of dewatering systems, pumps, filtration and operation/maintenance to lower water levels and allow for safe excavation of coal ash.
This document provides guidance and documentation requirements for a Municipal Separate Storm Sewer System (MS4) audit by the Indiana Department of Environmental Management (IDEM) of the municipality's Minimum Control Measure 6 (MCM6) regarding pollution prevention and good housekeeping for municipal operations. It outlines the necessary written documentation required by IDEM regulations for various municipal operations and activities including employee training, infrastructure mapping and maintenance, facility stormwater pollution prevention plans, and other pollution prevention best management practices. The document reviews the municipality's existing documentation and provides recommendations to ensure compliance with all MCM6 requirements for the upcoming IDEM audit.
This document analyzes runoff at the entrance to an apartment complex called The Ridge. Initial calculations using the SCS Curve Number method estimated 7.58 inches of runoff from a 100-year storm for the current design. A bioretention cell is proposed to reduce runoff and mitigate pooling at the entrance. With the cell, runoff is estimated to decrease to 5.45 inches. The bioretention cell is deemed the most feasible option due to its estimated $5,000-$15,000 cost and ability to significantly reduce runoff without disrupting road access.
Low impact development (LID) techniques aim to manage stormwater close to its source through practices like bioretention and permeable pavements. The presentation discusses LID manuals and projects in Jacksonville including recreational LID demonstrations at parks and a Valens Drive retrofit. Hydrologic modeling shows LID increases local water tables and runoff capture. Potential benefits include reduced flooding, better water quality and lower infrastructure costs. The City plans to monitor the Valens Drive project and expand LID coverage.
This document provides an overview and agenda for a training module on extended dry detention basins and infiltration practices. The first lecture reviews watershed planning concepts from Module 1 and introduces extended dry detention basins. The second lecture covers the design of extended dry detention basins through a design example and activity. The third lecture discusses infiltration practices including infiltration basins, trenches, and porous pavement. The training aims to explain structural best management practices for treating stormwater runoff.
This document discusses optimizing dewatering systems for construction projects. Dewatering involves lowering the groundwater level to allow dry excavations. The document outlines different approaches to optimizing dewatering design, including empirical, analytical, numerical, and observational methods. It also discusses potential problems with optimization such as lack of clear objectives, insufficient data, errors in the conceptual hydrogeological model, and selecting an inappropriate dewatering method. Overall, the document advocates for a rational optimization approach to dewatering design given the complexity and importance of ensuring effective groundwater control.
This document provides an agenda and materials for a training module on BMPs (best management practices). The module will include lectures covering an overview of BMP manuals, BMP selection and evaluation processes, hydrology calculations related to BMP design, and regional water quality initiatives. The first lecture will discuss the history of BMP manuals, definitions, basic BMP principles, and the BMP evaluation process. Future updates to the manual will also be addressed.
The document outlines a training module on extended wet detention basins and extended detention wetlands, including an agenda that covers an overview and definitions, design examples, a design activity, and considerations for implementation, operations and maintenance, vegetation, and lessons learned. The training is sponsored by MARC and presented by engineers from CDM to review best practices for these stormwater management techniques.
February 11, 2014 public meeting presentation for three proposed stormwater facility management projects off of Cabin Branch of Great Seneca Creek. (powerpoint file)
Landform-based Erosion Control for Stormwater ManagementOHM Advisors
The City of Ann Arbor and University of Michigan received an award for their stormwater enhancement project along Harvard Drain and in Nichols Arboretum. The project addressed high stormwater velocities causing erosion by replacing an undersized storm sewer pipe and constructing a new channel with step-pool structures and native plantings. Construction was completed on an aggressive schedule through the partnership of the two agencies and surrounding residents. The project met its goals of reducing velocities and erosion while creating an aesthetic landscaping feature.
Managing Stormwater Management for Property Managers Sw MaintenanceTheodore Scott
A presentation for Facility and Property Managers on what is stormwater management, why it is on sites, and how to best manage the infrastructure with inspection and maintenance programs. We are available to present this at no charge to property management firms in the Maryland / Northern Virginia area. Also available in other areas - fees and travel expenses will apply.
The document provides information on the proposed Clinton River Wastewater Treatment Plant project. Key details include:
- The plant will be located in Madison Heights, Michigan and treat 50 million gallons per day of wastewater from Oakland County.
- Engineering services will be provided for construction, environmental, structural, water resources, and transportation aspects.
- The treatment process will include primary settling, aeration tanks, secondary settling, and tertiary treatment before discharge.
- Structural designs and analyses were presented for the administration/education building and tertiary treatment facility.
- A cost estimate of $200 million was provided along with a project schedule through completion in 2015.
The Black Creek Sanitary Drainage Area Servicing Improvements Environmental Assessment Study aims to address capacity issues in the Black Creek Sanitary Trunk Sewer system to service projected population growth, reduce surcharging during wet weather, reduce inflow/infiltration, and reduce combined sewer overflows. Potential solutions being considered include new relief trunk sewers, combined sewer overflow storage tanks, flow diversion, and maintenance hole adjustments. The study will evaluate alternatives and select a preferred solution to address the identified problems while minimizing impacts on the natural, social, and technical criteria.
Do not include any personal information as all posted material on this site is considered to be part of a public record as defined by section 27 of the Municipal Freedom of Information and Protection of Privacy Act.
We reserve the right to remove inappropriate comments. Please see Terms of Use for City of Toronto Social Media Sites at http://www.toronto.ca/e-updates/termsofuse.htm
This document outlines the guidelines for constructing check dams in order to provide drinking water facilities and groundwater recharge. It discusses the objectives of check dams, selection criteria for areas to implement check dams, types of check dams, design aspects, implementation arrangements, operation and maintenance responsibilities, funding arrangements, institutional arrangements for management, and monitoring mechanisms. Check dams are constructed across small rivers and streams to reduce water flow during monsoons and allow water to seep into the soil.
The document presents a stormwater management plan for the Sea Aire subdivision to address high runoff rates from urban development. The plan aims to meet state regulations by maintaining pre-development peak flows and runoff volumes during 2-year and 25-year storms. It considers using low impact development methods like rain gardens and constructed wetlands to better infiltrate water across the site and mimic natural drainage compared to conventional methods like detention basins. A timeline is provided laying out the design, analysis, and presentation steps to be completed by the team to finalize the management plan within budget and knowledge constraints.
The Low Impact Development Site Planner is a web hosted tool that enables the use to quickly assess the feasibility of specific stormwater mitigation approaches including green infrastructure and conventional treatment systems. This presentation describes the architecture of the program and demonstrates its use on a typical project.
Low impact development (LID) is an approach to land development that emphasizes using small-scale stormwater management practices, green infrastructure, and environmental site design for the purpose of maintaining pre-development hydrologic conditions. The presentation discusses the benefits of LID for residents, developers, communities, and the environment. It outlines five basic principles of LID design and provides examples of entities that have adopted LID standards or are in the process of adopting them. The presentation argues for a mandatory rather than voluntary approach to implementing LID and provides strategies for getting political acceptance and introducing LID requirements through ordinances, standards, and education.
This document summarizes a study on stormwater impacts to McVicar Creek. The study aimed to: identify impacts; characterize them through a stream assessment; identify 3 representative sites; pursue further research; and develop remediation recommendations. The initial assessment identified 3 sites - Court Street, Castlegreen, and County Fair - for further study. Additional data collection and stakeholder workshops were held. The workshops developed stormwater management objectives and site-specific recommendations. For Court Street, increased enforcement and education were recommended. For Castlegreen, investigating infrastructure and partnering with local groups. For County Fair, educating landowners and considering end-of-pipe solutions were recommended. The final recommendations emphasized objectives and further stakeholder
This document discusses Griffin's expertise in dewatering and groundwater control since 1934. It provides information on Griffin's pumps and equipment, filtration and treatment systems, engineering capabilities, and approach to ash pond dewatering projects. Griffin offers customized solutions including modeling, design, installation of dewatering systems, pumps, filtration and operation/maintenance to lower water levels and allow for safe excavation of coal ash.
This document provides guidance and documentation requirements for a Municipal Separate Storm Sewer System (MS4) audit by the Indiana Department of Environmental Management (IDEM) of the municipality's Minimum Control Measure 6 (MCM6) regarding pollution prevention and good housekeeping for municipal operations. It outlines the necessary written documentation required by IDEM regulations for various municipal operations and activities including employee training, infrastructure mapping and maintenance, facility stormwater pollution prevention plans, and other pollution prevention best management practices. The document reviews the municipality's existing documentation and provides recommendations to ensure compliance with all MCM6 requirements for the upcoming IDEM audit.
This document analyzes runoff at the entrance to an apartment complex called The Ridge. Initial calculations using the SCS Curve Number method estimated 7.58 inches of runoff from a 100-year storm for the current design. A bioretention cell is proposed to reduce runoff and mitigate pooling at the entrance. With the cell, runoff is estimated to decrease to 5.45 inches. The bioretention cell is deemed the most feasible option due to its estimated $5,000-$15,000 cost and ability to significantly reduce runoff without disrupting road access.
Low impact development (LID) techniques aim to manage stormwater close to its source through practices like bioretention and permeable pavements. The presentation discusses LID manuals and projects in Jacksonville including recreational LID demonstrations at parks and a Valens Drive retrofit. Hydrologic modeling shows LID increases local water tables and runoff capture. Potential benefits include reduced flooding, better water quality and lower infrastructure costs. The City plans to monitor the Valens Drive project and expand LID coverage.
This document provides an overview and agenda for a training module on extended dry detention basins and infiltration practices. The first lecture reviews watershed planning concepts from Module 1 and introduces extended dry detention basins. The second lecture covers the design of extended dry detention basins through a design example and activity. The third lecture discusses infiltration practices including infiltration basins, trenches, and porous pavement. The training aims to explain structural best management practices for treating stormwater runoff.
This document discusses optimizing dewatering systems for construction projects. Dewatering involves lowering the groundwater level to allow dry excavations. The document outlines different approaches to optimizing dewatering design, including empirical, analytical, numerical, and observational methods. It also discusses potential problems with optimization such as lack of clear objectives, insufficient data, errors in the conceptual hydrogeological model, and selecting an inappropriate dewatering method. Overall, the document advocates for a rational optimization approach to dewatering design given the complexity and importance of ensuring effective groundwater control.
This document provides an agenda and materials for a training module on BMPs (best management practices). The module will include lectures covering an overview of BMP manuals, BMP selection and evaluation processes, hydrology calculations related to BMP design, and regional water quality initiatives. The first lecture will discuss the history of BMP manuals, definitions, basic BMP principles, and the BMP evaluation process. Future updates to the manual will also be addressed.
The document outlines a training module on extended wet detention basins and extended detention wetlands, including an agenda that covers an overview and definitions, design examples, a design activity, and considerations for implementation, operations and maintenance, vegetation, and lessons learned. The training is sponsored by MARC and presented by engineers from CDM to review best practices for these stormwater management techniques.
February 11, 2014 public meeting presentation for three proposed stormwater facility management projects off of Cabin Branch of Great Seneca Creek. (powerpoint file)
Landform-based Erosion Control for Stormwater ManagementOHM Advisors
The City of Ann Arbor and University of Michigan received an award for their stormwater enhancement project along Harvard Drain and in Nichols Arboretum. The project addressed high stormwater velocities causing erosion by replacing an undersized storm sewer pipe and constructing a new channel with step-pool structures and native plantings. Construction was completed on an aggressive schedule through the partnership of the two agencies and surrounding residents. The project met its goals of reducing velocities and erosion while creating an aesthetic landscaping feature.
Managing Stormwater Management for Property Managers Sw MaintenanceTheodore Scott
A presentation for Facility and Property Managers on what is stormwater management, why it is on sites, and how to best manage the infrastructure with inspection and maintenance programs. We are available to present this at no charge to property management firms in the Maryland / Northern Virginia area. Also available in other areas - fees and travel expenses will apply.
The document provides information on the proposed Clinton River Wastewater Treatment Plant project. Key details include:
- The plant will be located in Madison Heights, Michigan and treat 50 million gallons per day of wastewater from Oakland County.
- Engineering services will be provided for construction, environmental, structural, water resources, and transportation aspects.
- The treatment process will include primary settling, aeration tanks, secondary settling, and tertiary treatment before discharge.
- Structural designs and analyses were presented for the administration/education building and tertiary treatment facility.
- A cost estimate of $200 million was provided along with a project schedule through completion in 2015.
The Black Creek Sanitary Drainage Area Servicing Improvements Environmental Assessment Study aims to address capacity issues in the Black Creek Sanitary Trunk Sewer system to service projected population growth, reduce surcharging during wet weather, reduce inflow/infiltration, and reduce combined sewer overflows. Potential solutions being considered include new relief trunk sewers, combined sewer overflow storage tanks, flow diversion, and maintenance hole adjustments. The study will evaluate alternatives and select a preferred solution to address the identified problems while minimizing impacts on the natural, social, and technical criteria.
Do not include any personal information as all posted material on this site is considered to be part of a public record as defined by section 27 of the Municipal Freedom of Information and Protection of Privacy Act.
We reserve the right to remove inappropriate comments. Please see Terms of Use for City of Toronto Social Media Sites at http://www.toronto.ca/e-updates/termsofuse.htm
This document outlines the guidelines for constructing check dams in order to provide drinking water facilities and groundwater recharge. It discusses the objectives of check dams, selection criteria for areas to implement check dams, types of check dams, design aspects, implementation arrangements, operation and maintenance responsibilities, funding arrangements, institutional arrangements for management, and monitoring mechanisms. Check dams are constructed across small rivers and streams to reduce water flow during monsoons and allow water to seep into the soil.
The document presents a stormwater management plan for the Sea Aire subdivision to address high runoff rates from urban development. The plan aims to meet state regulations by maintaining pre-development peak flows and runoff volumes during 2-year and 25-year storms. It considers using low impact development methods like rain gardens and constructed wetlands to better infiltrate water across the site and mimic natural drainage compared to conventional methods like detention basins. A timeline is provided laying out the design, analysis, and presentation steps to be completed by the team to finalize the management plan within budget and knowledge constraints.
The Low Impact Development Site Planner is a web hosted tool that enables the use to quickly assess the feasibility of specific stormwater mitigation approaches including green infrastructure and conventional treatment systems. This presentation describes the architecture of the program and demonstrates its use on a typical project.
The document discusses sustainable site development and low impact development techniques. It provides an overview of low impact development specifics including maintaining natural hydrology, selecting appropriate green building certification credits, and using techniques like bioretention areas, vegetated swales, permeable paving, and rainwater harvesting. The summary also mentions how these techniques can help projects earn certain LEED credits for stormwater management and reducing heat island effect.
The document provides information on GreeNexus Consulting and their services related to sustainability certifications like LEED and Living Building Challenge. It also discusses various codes, standards and resources related to green building certifications, water efficiency and rainwater harvesting.
This document analyzes runoff at the entrance to an apartment complex called The Ridge. It calculates the current runoff from a 100-year storm using the SCS Curve Number method and finds 7.58 inches of runoff. To reduce pooling that occurs at the entrance, it proposes adding a bioretention cell. With the cell, runoff is calculated to decrease to 5.45 inches. The bioretention cell is deemed the best option because it significantly reduces runoff in a cost-effective and logistically feasible manner.
The document discusses rainwater harvesting (RWH) for decision makers. It defines RWH and explains that systems capture, convey, and store rainwater from surfaces like roofs and runoff. Water can be used directly or recharged into groundwater. Reasons for RWH include conserving water, supplementing supplies, improving water quality, and replenishing groundwater. Challenges include variable climate impacts and high costs in some areas. Design considerations include collection area, rainfall rates, storage capacity, and end use of captured water.
Urban Water Quality Issues - Green Design & Developmentnacaa
The document discusses green design and development which aims to minimize environmental impacts through practices like reducing impervious surfaces, preserving open spaces, and using low impact development (LID) approaches to better manage stormwater runoff. It provides examples of specific LID techniques like bioretention cells, permeable pavements, vegetated swales, and green roofs that can be integrated into site planning and building design. The goals are to protect water resources by maintaining natural hydrologic functions and reducing flooding, pollution, and development costs.
The document discusses sustainable design techniques including vegetated roofs, rainwater harvesting, bioretention, permeable pavements, and how utilizing multiple techniques can achieve sustainable synergy. It provides details on the components, design considerations, and benefits of each technique. It also presents a case study comparing the cost and stormwater management of a conventional versus low impact development approach.
This document discusses flooding challenges in Fairfax County and options to address them. It provides a history of stormwater management in the county from the 1940s to present. It also summarizes significant rainfall events that have impacted the county. The document evaluates options to address flooding for existing development, including enhancing overland relief, improving stormwater conveyance, upsizing systems, upgrading culverts, and property acquisition. It also discusses challenges from redevelopment. The document considers policy issues and provides recommendations, including allowing use of yards and roads for overflow, upsizing pipes to 100-year standards, and encouraging flood insurance. Contact information is provided for more details.
The document discusses low impact development techniques and modeling tools for analyzing their effectiveness. It provides examples of modeling different development scenarios using tools like SWMM, SLAMM, and the Prince George's County BMP model. Case studies include a suburban commercial site and metro west mixed-use development. The modeling compares runoff and pollutant loads from developments with and without LID controls like bioretention, permeable pavement, and green roofs.
The document discusses a proposed stormwater management plan for a new 400-space parking lot at Clemson University. It outlines regulations regarding stormwater runoff and describes Clemson's watershed that receives runoff. The goal is to prevent parking lot runoff from entering the watershed while filtering pollutants. Calculations determine the required bioretention cell size as 75% of the water quality volume (4,500 square feet). The design includes components like plants, soil, and an overflow. Alternatives like porous pavement are also considered.
The document discusses a proposed stormwater management plan for a new 400-space parking lot at Clemson University. It proposes designing a bioretention cell to filter stormwater runoff from the parking lot before it enters local watersheds. Calculations determine the bioretention cell should be 4500 square feet in size and 15 feet by 300 feet to treat the required water quality volume. The design considers components like plants, soil, and gravel layers to naturally filter pollutants and excess water from the parking lot runoff. An alternate design using porous pavement is also discussed.
The document proposes a stormwater management project for Clemson University. It outlines problems with current stormwater practices, goals to reduce runoff and improve water quality, and constraints of budget and space. It evaluates using a bioretention basin to treat runoff from parking lots that currently drains into a creek. The project would help reduce flooding, lower management costs, and improve water quality and the campus environment within the established budget and timeline.
Rainwater Collecting to Offset Existing Water UsesBrian Gregson
This document discusses components of a rainwater harvesting system for irrigation purposes. It describes how to size a system based on water demand. The key components are the catchment area (roof), conveyance (gutters and downspouts), pretreatment (screens and filters), storage (cistern), and distribution (pumps and piping). To size the system, one calculates the potential rainfall capture based on roof size and rainfall data, then sizes the cistern based on irrigation water demand. Pretreatment devices like screens and first flush diverters help keep debris out of the cistern.
This document provides information on storm drainage design and subsurface drainage systems. It discusses the types and aims of drainage, as well as the design of surface drainage systems including estimation of peak flows using methods like the Rational Formula. It also covers the design of subsurface drainage systems using buried drains, including considerations like drainage coefficients, drain depth and spacing, diameters and gradients. Filters for tile drains are also discussed.
The document discusses various techniques to reduce the environmental footprint of unconventional gas drilling operations, including:
1) Prototype small footprint drilling rigs, multi-well pad drilling, and coiled tubing drilling to minimize land disturbance.
2) Centralized fracturing to hydraulically fracture multiple wells from a single location.
3) Innovative water management techniques like constructed wetland systems to treat produced water on-site.
4) Developing an "EFD scorecard" to measure drilling technologies' performance on issues like air, water, and waste management.
The document discusses different types of stormwater filtering systems including surface sand filters, perimeter sand filters, organic sand filters, underground sand filters, pocket sand filters, and bioretention systems. It provides details on the design components, media, maintenance needs, and sizing considerations for each type of filter. Key factors in selecting a filter type include the available space, minimum head requirements, maintenance burden, and costs.
This document provides a final report on the design of a rainwater catchment system for 50 people in Haiti. The system includes a 185 m2 catchment area made of aluminum, a flow diverter made of PVC pipes to remove debris, two 30 cm diameter sand filters 1.1 m high to remove pathogens, and two 5,000 gallon polyethylene reservoirs for storage. Experimental testing showed the flow diverter effectively cleans water. Testing also determined the optimal sand filter dimensions. The total estimated cost is $6,700-$8,200.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
A SYSTEMATIC RISK ASSESSMENT APPROACH FOR SECURING THE SMART IRRIGATION SYSTEMSIJNSA Journal
The smart irrigation system represents an innovative approach to optimize water usage in agricultural and landscaping practices. The integration of cutting-edge technologies, including sensors, actuators, and data analysis, empowers this system to provide accurate monitoring and control of irrigation processes by leveraging real-time environmental conditions. The main objective of a smart irrigation system is to optimize water efficiency, minimize expenses, and foster the adoption of sustainable water management methods. This paper conducts a systematic risk assessment by exploring the key components/assets and their functionalities in the smart irrigation system. The crucial role of sensors in gathering data on soil moisture, weather patterns, and plant well-being is emphasized in this system. These sensors enable intelligent decision-making in irrigation scheduling and water distribution, leading to enhanced water efficiency and sustainable water management practices. Actuators enable automated control of irrigation devices, ensuring precise and targeted water delivery to plants. Additionally, the paper addresses the potential threat and vulnerabilities associated with smart irrigation systems. It discusses limitations of the system, such as power constraints and computational capabilities, and calculates the potential security risks. The paper suggests possible risk treatment methods for effective secure system operation. In conclusion, the paper emphasizes the significant benefits of implementing smart irrigation systems, including improved water conservation, increased crop yield, and reduced environmental impact. Additionally, based on the security analysis conducted, the paper recommends the implementation of countermeasures and security approaches to address vulnerabilities and ensure the integrity and reliability of the system. By incorporating these measures, smart irrigation technology can revolutionize water management practices in agriculture, promoting sustainability, resource efficiency, and safeguarding against potential security threats.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
2. Introduction
Overview
Problem
Goals
Constraints
Literature Review
Design Methodology and Materials
Analysis of Information
Synthesis of Design
Alternative Design Options
Approach to Solution and Final Design
Sustainability
Budget
Timeline
References
3. Problem
Recognition:
Urban and suburban development leads to high runoff
rates and low infiltration rates which reduce the quality
of ground and surface water
Definition:
Rapid increase of development in Charleston, SC
leading to high volume of runoff and flooding
http://www.modelstoglobe.com/ESW/Images/Earth_Globe.png
4. Goal
Design a stormwater management plan for Sea Aire
subdivision that:
Meets state and local regulations by ensuring the peak
flow during a 2 and 25 year storm event doesn’t exceed
pre-development levels
Ensures the post-development runoff volume doesn’t
exceed pre-development levels
7. Constraints
Ecological: Must work with existing soil, water table,
vegetation, and waterways
Ultimate use: Residential living and recreational
space
Skills: Limited knowledge and experience with
stormwater design
Cost: Budget of $1200 for design process. Must account
for travel expenses, software, and testing services
8. Questions of User, Client and Designer
User- Residents of Sea Aire
What is a rain garden, why are there plants in the ditch?
What do I have to do?
Client- New Leaf Builders through Robinson Design
Engineers
Will this meet regulations?
Will it cost more?
Designer- The design team and RDE
Will this be long lived?
Can this be an amenity?
9. Governing Equations
Energy Balance
Mass Balance
Curve Number Method
Horton’s Equation
Universal Soil Loss Equation
10. Stormwater Management
Conventional Methods versus LID methods
Conventional methods provide solutions at the bottom
of the site (ponds, basins, ect.)
Low impact development methods encourage
infiltration from all locations on site in an effort to
mimic the more natural process
11. Comparison of Volume
1 – Pre-development
2 – Conventional Methods
3 – LID Methods
LID methods maintain pre-development
runoff volume
while conventional methods
lead to increased volume
http://water.epa.gov/polwaste/green/upload/lid_hydr.pdf
13. Low Impact Development Methods
Green roofs
Rain water collection
Constructed wetlands
Bioretention cells
Rain gardens
Permeable pavement
https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQ4Z-m20Aw00nkD4n_06eBr9JWP2j7-09BC-PVkD6LVcGVnJe6M4g
https://encrypted-tbn2.
gstatic.com/images?q=tbn:ANd9GcQE5A0MNi9kLQ7syPJpxKb0aRJ3k2h5L7U6Zzy3Fy5c
AJWabiTIF5Vo_Ds
http://www.sciotogardens.com/images/rain%20garden.jpg
14. Constructed Wetlands
Public area of development will
need a way to catch and retain
stormwater
Help filter and remove
containments, “Nature’s Kidney”
Shallow depression in the ground
with a level bottom
https://www.clemson.edu/cafls/safes/faculty_staff/research/hitchcock/7_strosnider_et_al_asabe_2007.pdf
15. Design Methodology and Materials
Analysis of Information
Synthesis of Design
Evaluation of Alternatives
LID Techniques
Stormwater Pond
StormwaterWetland
Selection of Final Approach
16. Analysis of Information
Rainfall Distribution Data: Type II
2-year storm: 4.3 inches
25- year storm: 8.0 inches
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 5 10 15 20 25 30
Cummulative Rainfall (in)
Time (hours)
17. Determining Site Runoff
Determined weighted curve number for site using
WebSoil Survey Data
Calculated runoff depth using Curve Number Method
Used HEC HMS and SWMM to compute and compare
runoff depth for the entire site
http://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx
http://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx
24. Average Residential Lot
Lot Area: 4857 ft2
Roof Area: 1133 ft2
Driveway Area: 527 ft2
Garage Area: 264 ft2
40% of the residential lot is impervious
Robinson Design Engineers: Site Layout
26. Design Considerations
Initial Growth of Vegetation
Avoiding Leaks
Cost of Materials
Access to Roof- Maintenance
Pitch of Roof
Gutter System
http://i.stack.imgur.com/tW8B8.jpg
http://www.jrsmith.com/uploads/fileLibrary/1010_rdp_lg.jpg
27. Vegetative Roof Holding Capacity
Designed to hold 50% of the amount of water falling on the
roof during a 2-year storm
Each layer of a vegetative roof has a certain water capacity
Component Water Holding Capacity Total
Plants - -
Media Layer 40%, 4 inches 148.7 ft3
Filter Fabric - -
Drainage Layer 8 L/m2 32.3 ft3
Root Protection Layer 4 L/m2 14.8 ft3
Waterproof Layer - -
Roof Material - -
Total Water Storage: 195 ft3
28. Rain Barrels
Balance between aesthetics and
storage
1800 gallons roof runoff (2 yr.storm)
2700 gallons roof runoff (25 yr. storm)
Linked barrels increased
volume without overwhelming size
Tank Volume: 200 gallon tanks
Dimensions: 47’’height, 36’’ diameter
To be placed on both the house and
garage
Total Storage Capacity: 800 gallons
(4 barrels total)
Overflow management: Automatic
Downspout Diverter
http://gardenwatersaver.com/c
onnector-kits/
http://gardenwatersaver.com/connector-kits/
31. Design Considerations
Permeable Interlocking Concrete Pavements (PICPs)
Maintenance
Street sweeping
Pressure washing
Vacuum truck
At least once per year, or after evident damage
32. PICP Design
3-inch pavement layer
Surface slope = 2 to 3%
Storage thickness = 6 to 18
inches
Underdrain pipe = 1 to 4
inches from bottom of
layer
http://www.bae.ncsu.edu/stormwater/PublicationFil
es/ICPIreport2004.pdf
33. Infiltration Trench
Underground water storage and infiltration feature
Coarse gravel surrounded by filter fabric and topped
with soil
Schueler, Controlling Urban Runoff
34. Design Details
Appropriate area and volume
15% of the lot area
2196 ft3
Water storage
40% void space
878 ft3
Infiltration rate
http://stormwaterbook.safl.umn.edu/sites/stormwaterbook.safl.umn.edu/files/fig9.3.jpg
35. Rain Garden
Surface Area: 600 ft2
Soil Media – 70% sand content
Depth: 3 ft. (Infiltration rate x 24 hr)
Ponding Depth: 6 in.
Plants: Beautyberry, Palmetto Dwarf, Purple Coneflower
Water Table Level
http://kawarthaconservation.com/images/rain-garden_diagram.jpg
36. Bioretention Cells
Bioretention cells in public area
The cells will overflow into vegetative swales or
underdrain pipes below the bioretention cell to leave
the site via the constructed wetland
http://www.northinlet.sc.edu/LID/FinalDocument/loRes/4.2%20Bioretention%20low%20res.pdf
37. Constructed Wetland
Manage water flowing onto the site through existing
ditch
Treat water for quality and quantity before it leaves the
site
Handle excess runoff from individual lots and
common areas
http://pubs.ext.vt.edu/448/448-407/L_IMG_fig6.jpg
38. Can We Do It?
Design Storm
Pre-Development
Runoff Depth (in)
Post-Development
Runoff Depth (in)
Water Storage Capacities of LID Methods
• If all LID methods were used together the 25 year storm could
theoretically be contained on each property
• Due to spatial and budgetary constraints, not all LID controls will be
installed on a property
• Balance between space allotment, water capacity, and budget
• Therefore, management of flow into the main area from individual
plots must still be considered
Increase in Runoff
Depth After
Development (with
no LID controls) (in)
Runoff Volume (gal)
2 year 0.62 3.14 2.52 7629
25 year 2.7 6.56 3.86 11686
Units Green Roof Rain Barrels Infiltration Trench Permeable Pavement Rain Garden Total Water Storage
Gallons 1465 800 6567 1800 5520 16152
Feet3 196 107 878 241 738 2159
41. Sustainability Measures
Life Cycle Assessment (LCA)
Materials selected
Carbon and Water costs
Efficiency
Societal Issues
Overall Carbon and Water footprint
42. Life Cycle Assessment
Vegetative Roof:
Polypropylene, HDPE, PVC, media transportation
Rain Garden and Bioretention Cell:
PVC, material transportation, construction
Porous Pavement:
PICP, gravel
Infiltration Trench:
Geotex filter fabric, gravel, excavation and transportation
Rain Barrel:
Polyethylene
Constructed Wetland:
Plants, soil media, drain materials
43. LCA Cont.
Ecological – goal of zero impact on the runoff volume
coming from the site as a means of maintaining the
existing ecosystem
Social – ultimately serves the people living in the
development. Promotes an active lifestyle and provides
an educational opportunity.
Economic – prevents future flooding and erosion
Ethical– aim to balance the wishes of the clients and
the biological integrity of the site
44. Sustainability
Efficiency
Capture 100% of stormwater runoff on site for design
storm
Carbon and Water footprint
Carbon negative
Gravity fed systems
Plants will sequester carbon
Potential for decreased freshwater demands due to
rainwater recycling (rain barrels)
45. Budget
Vegetative Roof
$5700 not including construction cost or initial roofing cost,
approximately $5/ft3
Rain Garden:
$2300, not including installation costs
Porous Pavement:
$3450, not including installation costs
Rain Barrels:
$1170 for all 4
Infiltration Trench:
$1800 gravel and geotex
46. Timeline
Event 9/8 9/10 9/17 9/24 10/1 10/7 10/8 10/15 10/22 10/29 11/5 11/12 11/19 11/26 12/3
Finish Proposal
Present Proposal
Finish majority of Literature Review
Pick Design
Start Writing Midterm Paper
3- week progress report
Develop preliminary Design
Calculations for Design
Finish Writing Midterm paper
Midterm Presentation and paper due
Cost Analysis for Design
Bring together final design
Write Final Paper
Final Presentation
48. References
http://landstudy.org/Resources.html
Fangmeier, D.D., Elliot, W.J., Huffman, R.L.,
Workman, S.R. 2013. Wetlands. Soil and Water
Conservation Engineering. Seventh Edition. 287-302.
Best Management Practices Handbook. South
Carolina Department of Health and Environmental
Control.
www.scdhec.gov/Environment/waterquality/stormwat
er/BMPHandbook/