Excessive infiltration/inflow definition

Excessive infiltration/inflow means a flow rate in excess of acceptable threshold values as defined by Section IX.A.5. of this document.
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Excessive infiltration/inflow means the quantities of infiltration/inflow above 120 gallons per capita per day (GPCD), which can be economically eliminated from a sewer system as determined in a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions to the total costs for transportation and treatment of the infiltration/inflow.
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Excessive infiltration/inflow means the quantities of infiltration/inflow which can be economically eliminated from a sewer system by rehabilitation, as determined in a cost−effective- ness analysis that compares the costs for correcting the infiltra- tion/inflow conditions to the total costs for transportation and treatment of the infiltration/inflow, subject to the provisions in s. NR 128.20.
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Examples of Excessive infiltration/inflow in a sentence

  • Excessive infiltration/inflow is the quantity of infiltration/inflow which can be economically eliminated from a sewer system as determined in a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions to the total costs for transportation and treatment of the infiltration/inflow.

  • Excessive infiltration/inflow (I/I) into the sewers at any point in the connected collection system reduces hydraulic capacity of the system and the treatment plant, thereby reducing the level of service to all users.

  • Excessive infiltration/inflow (commonly referred to as “I/I”) refers to those quantities of infiltration/inflow which can be economi- cally eliminated from a sewer system as determined in a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions to the total costs for transportation and treatment of the infiltration/inflow.

  • Excessive infiltration is defined in 40 CFR 35.2005(b)(16) as,(16) Excessive infiltration/inflow.


More Definitions of Excessive infiltration/inflow

Excessive infiltration/inflow or “Excessive I/I” shall mean the Infiltration/Inflow (i) that cost-effectively can be eliminated from the Collection System, as determined by an analysis that compares the cost of eliminating the I/I with the total costs of transport and treatment of the I/I (including the capital costs of increasing the POTW’s capacity and treatment operations, and the resulting operating costs), or (ii) that, with respect only to sanitary sewer overflows (“SSOs”), must be eliminated regardless of cost effectiveness to prevent SSOs that present an unacceptable risk, as determined by EPA and MassDEP, to public health and water resources.
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Excessive infiltration/inflow. (I/I) means the quantities of clear water that can be economically eliminated from a sewer system by rehabilitation, as determined by a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions with the total costs for transportation and treatment of the infiltra- tion and inflow.
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Excessive infiltration/inflow or “Excessive I/I” shall mean (1) the quantities of infiltration/inflow that the City demonstrates can be economically eliminated from its sewer system as determined in a cost-effectiveness analysis that compares the costs for correcting the infiltration/inflow conditions to the total costs for transportation and treatment of the infiltration/inflow or (2) the quantity of flow that results in chronic operational problems (including but not limited to surcharging, backups, bypasses, and overflows), whichever is less. “Excessive Infiltration/Inflow” or “Excessive I/I” shall not include (a) flow of up to 120 gallons per capita in any Day (domestic base flow and infiltration), (b) the quantities of infiltration that cannot be economically and effectively eliminated from the City’s sewer system as determined in a cost-effectiveness analysis, and (c) a total flow of
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Excessive infiltration/inflow means the quantities of Infiltration/Inflow which can be economically eliminated from a Sewer system by rehabilitation, as determined by cost-
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Excessive infiltration/inflow or “Excessive I/I” shall mean the Infiltration/Inflow (“I/I”) and Rainfall-Induced Infiltration that can be cost-effectively eliminated from the City’s WCTS as determined by a cost effectiveness analysis that compares the costs of eliminating the I/I with the total costs of transportation and
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Related to Excessive infiltration/inflow

  • Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

  • Infiltrative surface means designated interface where effluent moves from distribution media or a distribution product into treatment media or original soil. In standard trench or bed systems this will be the interface of the distribution media or product and in-situ soil. Two separate infiltrative surfaces will exist in a mound system and an unlined sand filter, one at the interface of the distribution media and fill sand, the other at the interface of the fill sand and in-situ soil.

  • Infiltration rate means the rate of water entry into the soil expressed as a depth of water per unit of time (e.g., inches per hour).

  • Membrane filtration means a pressure or vacuum driven separation process in which particulate matter larger than one micrometer is rejected by an engineered barrier, primarily through a size exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • Massive Multiauthor Collaboration Site (or “MMC Site”) means any World Wide Web server that publishes copyrightable works and also provides prominent facilities for anybody to edit those works. A public wiki that anybody can edit is an example of such a server. A “Massive Multiauthor Collaboration” (or “MMC”) contained in the site means any set of copyrightable works thus published on the MMC site.

  • Corrosion inhibitor means a substance capable of reducing the corrosivity of water toward metal plumbing materials, especially lead and copper, by forming a protective film on the interior surface of those materials.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • Noxious weeds means weeds that are difficult to control effectively, such as Johnson Grass, Kudzu, and multiflora rose.

  • Weeds means all rank and uncultivated vegetable growth or matter that:

  • Seepage pit means an excavation deeper than it is wide that receives septic tank effluent and from which the effluent seeps from a structural internal void into the surrounding soil through the bottom and openings in the side of the pit.

  • Noxious weed means a weed defined in 7-22-2101.

  • Filtration means a process for removing particulate matter from water by passage through porous media.

  • Constructed wetlands means areas intentionally designed and created to emulate the water quality improvement function of wetlands for the primary purpose of removing pollutants from stormwater.

  • Added filtration means any filtration which is in addition to the inherent filtration.

  • Very high radiation area means an area, accessible to individuals, in which radiation levels from radiation sources external to the body could result in an individual receiving an absorbed dose in excess of 5 Gy (500 rad) in one hour at one meter from a source of radiation or one meter from any surface that the radiation penetrates.

  • Specified anatomical areas means and includes:

  • Airborne radioactivity area means a room, enclosure, or area in which airborne radioactive materials, composed wholly or partly of licensed radioactive material, exist in concentrations:

  • Biomethane means biogas that meets pipeline quality natural gas standards.

  • Combined sewer overflow means the discharge of untreated or

  • Invasive plant species means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by county agricultural agencies as noxious species. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database.

  • Vapor tight means equipment that allows no loss of vapors. Compliance with vapor-tight requirements can be determined by checking to ensure that the concentration at a potential leak source is not equal to or greater than 100 percent of the lower explosive limit (LEL) when measured with a combustible gas detector, calibrated with propane, at a distance of 1 inch (2.54 cm) from the source.

  • Mold means mold, fungus, microbial contamination or pathogenic organisms.