Where and When Soil Amendment is Most Effective as a Low Impact Development Practice in Residential Areas

2020 ◽  
Vol 56 (5) ◽  
pp. 776-789
Author(s):  
Carolyn B. Voter ◽  
Steven P. Loheide
Keyword(s):  
Soil Amendment ◽  
Low Impact Development ◽  
Residential Areas ◽  
Development Practice

scholarly journals Performance Evaluation of Soil Cell

2021 ◽  
Author(s):  
Lianghao Chen
Keyword(s):  
Laboratory Testing ◽  
Copper Concentration ◽  
Lead Concentration ◽  
Statistical Significance ◽  
Low Impact Development ◽  
Field Performance ◽  
Concentration Increase ◽  
Monitoring Result ◽  
Perforated Pipe ◽  
Development Practice

Soil Cell is a novel Low-Impact Development practice that is suitable for densely developed urban environment. This thesis seeks to gain further understanding of soil cell’s performance in terms of water quality and quality control; and to assess the exfiltration performance of perforated pipe in soil cells by monitoring an active cell. The monitoring result showed that the cell was very effective in treating particulate (90% concentration reduction), metal (91% lead concentration reduction to 53% copper concentration reduction) and phosphorus (74% concentration reduction). The cell was ineffective in treating chloride (1% concentration increase, no statistical significance) and even caused nitrate leaching (65% concentration increase). Field performance of the soil cell indicated that the inflow perforated backed up frequently, restricting the flow into the cell but laboratory testing of the perforated pipes’ hydraulic performance confirms that the pipe has a sufficient capacity to convey the flows of up to 10 L/s.

scholarly journals Investigation of Appropriate Model Structures for Modelling Small Urban Catchments

2021 ◽  
Author(s):  
Naglaa Ahmed
Keyword(s):  
Peak Flow ◽  
Low Impact Development ◽  
Residential Areas ◽  
Hydrologic Modelling ◽  
Small Areas ◽  
Total Runoff ◽  
Lumped Models ◽  
Urban Catchments ◽  
Model Structures

Although the hydrologic modelling of small urban catchments has been practised for several decades, guidance on the development of models is still needed. This research evaluates and compares several modelling structures of small residential areas with and without low impact development implementation using distributed and lumped models. Hypothetical small areas were modelled to examine several grid based models with different grid sizes. The results were used to test the ability of uncalibrated models to predict runoff using three model configurations: 1) single catchment, 2) grid, and 3) homogenous areas, where every building, backyard, and street was modelled separately as a single catchment. The results of the models were compared and evaluated based on the total runoff volume, peak flow rate, and infiltration volume. The results of a real case study show that the grid model is an appropriate model structure for modelling small urban catchments.

scholarly journals Assessment on the Effectiveness of Urban Stormwater Management

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 4
Author(s):  
Yixin Zhang ◽  
Weihan Zhao ◽  
Xue Chen ◽  
Changhyun Jun ◽  
Jianli Hao ◽  
...  
Keyword(s):  
Green Infrastructure ◽  
Stormwater Management ◽  
Suspended Solids ◽  
Low Impact Development ◽  
Stormwater Runoff ◽  
Reduction Rate ◽  
Interdisciplinary Approach ◽  
Residential Areas ◽  
Urban Resilience ◽  
Pipe System

Stormwater management is a key issue in line with global problems of urbanization and climate change. Assessing the effectiveness in managing stormwater is crucial to maintain urban resilience to flooding risk. A method based on a stormwater management model (SWMM) was developed for assessing the control of stormwater runoff volume and the percentage removal of suspended solids by implementing a Sponge City strategy. An interdisciplinary approach was adopted incorporating Low Impact Development (LID) with urban green infrastructure and grey infrastructure paradigms in a typical old residential community in Suzhou, China. Sponge facilities for reducing stormwater runoff included bio-retention cells, permeable pavements, grassed pitches, and stormwater gardens. The simulation results of SWMM show that the stormwater pipe system can meet the management standard for storms with a five-year recurrence interval. The volume capture ratio of annual runoff was 91%, which is higher than control target of 80%. The suspended solids reduction rate was 56%, which meets the requirement of planning indicators. Thus, the proposed method of spongy facilities can be used for renovation planning in old residential areas in China. Implementing spongy facilities with a LID strategy for stormwater management can significantly enhance urban water resilience and improve ecosystem services.

Evaluating Low-Impact Development practice performance to reduce runoff volume in an urban watershed in Algeria

2021 ◽  
Vol 14 (9) ◽  
Author(s):  
Brahim Abdelkebir ◽  
Ammar Maoui ◽  
Elhadj Mokhtari ◽  
Bernard Engel ◽  
Jingqiu Chen ◽  
...  
Keyword(s):  
Low Impact Development ◽  
Urban Watershed ◽  
Runoff Volume ◽  
Practice Performance ◽  
Development Practice

scholarly journals A Right-of-Way Stormwater Low Impact Development Practice

2015 ◽  
Author(s):  
James Li ◽  
◽  
Darko Joksimovic ◽  
John Tran ◽  
◽  
...  
Keyword(s):  
Low Impact Development ◽  
Right Of Way ◽  
Development Practice

scholarly journals Performance Evaluation of Soil Cell

2021 ◽  
Author(s):  
Lianghao Chen
Keyword(s):  
Laboratory Testing ◽  
Copper Concentration ◽  
Lead Concentration ◽  
Statistical Significance ◽  
Low Impact Development ◽  
Field Performance ◽  
Concentration Increase ◽  
Monitoring Result ◽  
Perforated Pipe ◽  
Development Practice

Soil Cell is a novel Low-Impact Development practice that is suitable for densely developed urban environment. This thesis seeks to gain further understanding of soil cell’s performance in terms of water quality and quality control; and to assess the exfiltration performance of perforated pipe in soil cells by monitoring an active cell. The monitoring result showed that the cell was very effective in treating particulate (90% concentration reduction), metal (91% lead concentration reduction to 53% copper concentration reduction) and phosphorus (74% concentration reduction). The cell was ineffective in treating chloride (1% concentration increase, no statistical significance) and even caused nitrate leaching (65% concentration increase). Field performance of the soil cell indicated that the inflow perforated backed up frequently, restricting the flow into the cell but laboratory testing of the perforated pipes’ hydraulic performance confirms that the pipe has a sufficient capacity to convey the flows of up to 10 L/s.

scholarly journals Investigation of Appropriate Model Structures for Modelling Small Urban Catchments

2021 ◽  
Author(s):  
Naglaa Ahmed
Keyword(s):  
Peak Flow ◽  
Low Impact Development ◽  
Residential Areas ◽  
Hydrologic Modelling ◽  
Small Areas ◽  
Total Runoff ◽  
Lumped Models ◽  
Urban Catchments ◽  
Model Structures

Although the hydrologic modelling of small urban catchments has been practised for several decades, guidance on the development of models is still needed. This research evaluates and compares several modelling structures of small residential areas with and without low impact development implementation using distributed and lumped models. Hypothetical small areas were modelled to examine several grid based models with different grid sizes. The results were used to test the ability of uncalibrated models to predict runoff using three model configurations: 1) single catchment, 2) grid, and 3) homogenous areas, where every building, backyard, and street was modelled separately as a single catchment. The results of the models were compared and evaluated based on the total runoff volume, peak flow rate, and infiltration volume. The results of a real case study show that the grid model is an appropriate model structure for modelling small urban catchments.

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