2,147
edits
Changes
Jump to navigation
Jump to search
Line 6:
Line 6: + + + + + + + + + + + + + + − Detailed [[Inspections and maintenance|inspections]] and monitoring during and after project implementation also help identify potential problems before they grow into larger issues and provide project management staff with opportunities to learn from mistakes and improve processes and designs in future projects. This process of continuous learning and improvement is often referred to as ‘adaptive management’ which ‘promotes flexible decision making that can be adjusted in the face of uncertainties as outcomes from management actions and other events become better understood’ (this can be seen in the image above).+
no edit summary
An inspection and monitoring program is a fundamental part of implementing stormwater management plans and operating facilities. The program evaluates whether a stormwater management practice or system is constructed and functioning according to design and meets the environmental and public health and safety objectives it was designed to meet. <br>
An inspection and monitoring program is a fundamental part of implementing stormwater management plans and operating facilities. The program evaluates whether a stormwater management practice or system is constructed and functioning according to design and meets the environmental and public health and safety objectives it was designed to meet. <br>
Detailed [[Inspections and maintenance|inspections]] and monitoring during and after project implementation also help identify potential problems before they grow into larger issues and provide project management staff with opportunities to learn from mistakes and improve processes and designs in future projects. This process of continuous learning and improvement is often referred to as ‘adaptive management’ which ‘promotes flexible decision making that can be adjusted in the face of uncertainties as outcomes from management actions and other events become better understood’ (this can be seen in the image above).
It is important to view inspections and monitoring as part of a single program that strives to meet overlapping goals and shares the same overarching objective of continuous learning and improvement. Key types of inspections and monitoring initiatives include: <br>
* '''[[Inspections and maintenance#Construction Inspections|Construction inspections]]''': These inspections are conducted by qualified staff just prior to [[Pre-construction|construction]] of stormwater feature and at intervals throughout construction corresponding to major milestones such as the completion of [[Excavation and grading|excavation]], connection of [[Pipes|drainage pipes]], [[Bioretention: Filter media|media placement]], etc. Approved erosion and sediment control plans and site/feature design [[drawings]] provide the benchmark against which construction outcomes are evaluated.
* '''[[Inspections and maintenance#Assumption Inspections|Assumption inspections]]''': These inspections assess whether the stormwater management practice has been constructed in accordance with the design drawings and that approved design modifications (if any) meet expectations. These inspections are conducted after substantial completion of construction prior to the beginning of the ‘warranty period’ (typically 2 years), and again at the end of the ‘warranty period’ and prior to final assumption of ownership by the municipality or owner.
* '''[[Inspections and maintenance#Routine Operation Inspections|Routine operation and verification inspections]]''': These inspections are conducted by maintenance crews after assumption of the facility and are typically followed by various maintenance tasks identified as necessary to restore the visual appeal of the practice and ensure any functional issues are addressed. Routine Inspections occur at regular intervals throughout the year, while verification inspections entail more detailed assessments conducted periodically (e.g. every 5 years) to evaluate whether minor or major repairs are needed to rehabilitate overall system function.
*'''Functional monitoring''': This type of monitoring is often conducted with continuous measurement devices (e.g. [[Wells|water level sensors, water temperature sensors]]) over a period of time to evaluate the function of the system during and after rain events. Typical functional monitoring parameters may include [[inlet]] and [[Overflow|outlet]] function, surface and subsurface water level changes, overflow frequency and soil moisture/salinity conditions (see below for more details). Functional monitoring may occur any time after substantial completion of construction. Conducting functional monitoring during the warranty period can simplify and/or replace the tasks needed for assumption inspections, since the former can be regarded as a more detailed form of an assumption inspection.
*'''Performance monitoring''': This monitoring evaluates how well a stormwater management feature or management measure performs in comparison with a range of performance indicators or design targets (e.g. [[Flow control|peak flow attenuation]], volume reduction) to determine whether design criteria has been met and to compare how this practice performs relative to other stormwater facilities, technologies and/or development contexts. This more detailed monitoring would typically occur after the development site has been stabilized either before or after site assumption by the municipality or owner. Conducting performance monitoring after substantial completion of construction can replace and/or simplify the tasks typically undertaken through both functional monitoring and assumption inspections because performance monitoring involves a wide range of detailed measurements, including many of the same measurements undertaken through simpler inspection and monitoring programs.
*'''Environmental effects monitoring''': This monitoring is designed to assess the cumulative impact of land use changes and stormwater management measures on [[groundwater]], terrestrial system and/or the environmental health of a stream reach, subwatershed, watershed, or individual community. Understanding environmental effects requires quantifying key sources of hydrologic and chemical changes within the contributing drainage area, monitoring the major management measures put in place to mitigate land use changes, and evaluating changes in physical, chemical and biological indicators of the environmental systems of interest (e.g. groundwater, receiving waters, terrestrial systems). Where budget is limited, an environmental effects monitoring program may be scoped to evaluate impacts on a limited range of environmental variables (e.g. stream health, groundwater contamination).