Abstract
The methods for properly executing inspection and maintenance of stormwater control measures are often ambiguous and inconsistently applied. This paper presents specific guidelines for inspecting and maintaining stormwater practices involving media filtration, infiltration, ponds, and permeable pavements because these tend to be widely implemented and often unsatisfactorily maintained. Guidelines and examples are based on recent scientific research and practitioner experience. Of special note are new assessment and maintenance methods, such as testing enhanced filtration media that targets dissolved constituents, maintaining proper vegetation coverage in infiltration practices, assessing phosphorus release from pond sediments, and the development of compressed impermeable regions in permeable pavements and their implications for runoff. Inspection and maintenance examples provided in this paper are drawn from practical examples in Northern Midwest USA, but most of the maintenance recommendations do not depend on regional characteristics, and guidance from around the world has been reviewed and cited herein.
Highlights
As urbanized areas around the world wrestle with growing pains and shifting ideologies on urban planning, stormwater control measures (SCMs) and green infrastructure are becoming increasingly popular for managing urban hydrology and stormwater
While previous work has set base guidelines for the maintenance of common stormwater control measures, the purpose of this paper is to address new and emerging challenges faced by stormwater professionals
This information is intended to serve as a supplement to currently-available assessment and maintenance manuals (e.g., [1]) that have been developed globally, including the Pacific Northwest USA [7,9,10,11], New England USA [8,12,13,14,15,16], Mid-Atlantic USA [17,18,19,20], South Central USA [21,22,23], Southwest USA [5,24,25,26,27], Canada [28,29], New Zealand [30], the United Kingdom [31], Australia [32,33,34,35], Malaysia [36], Singapore [37,38], and South Korea [39], among others
Summary
As urbanized areas around the world wrestle with growing pains and shifting ideologies on urban planning, stormwater control measures (SCMs) and green infrastructure are becoming increasingly popular for managing urban hydrology and stormwater. Effective newly-constructed SCMs and newly-installed proprietary devices may be, none can be expected to continue functioning effectively without regular and well-informed maintenance and inspections [1]. These efforts are best conducted by individuals experienced in stormwater management, which requires designating and training a dedicated stormwater work crew or contracting a stormwater engineer for consultations [2]. Scientific research is combined with practitioner experience to develop guidelines for the proper maintenance of high-priority SCMs, including media filtration practices, infiltration practices, stormwater wet ponds, and permeable pavements. This information is intended to serve as a supplement to currently-available assessment and maintenance manuals (e.g., [1]) that have been developed globally, including the Pacific Northwest USA [7,9,10,11], New England USA [8,12,13,14,15,16], Mid-Atlantic USA [17,18,19,20], South Central USA [21,22,23], Southwest USA [5,24,25,26,27], Canada [28,29], New Zealand [30], the United Kingdom [31], Australia [32,33,34,35], Malaysia [36], Singapore [37,38], and South Korea [39], among others
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