9/24/2023 0 Comments I genietti watermelon slicerMaintain pre-development annual groundwater recharge volume to the maximum extent practicable through the use of infiltration measures Groundwater Recharge and Runoff Volume Reduction Peak flow associated with the water quality volume calculated using the NRCS Graphical Peak Discharge Method R = volumetric runoff coefficient = 0.05+0.009(I) Volume of runoff generated by one inch of rainfall on the site Summary of Stormwater Treatment Practice Sizing Criteria Sizing Criteria The rationale for and application of these criteria are described in the following sections. Table 7-2 lists 24-hour design rainfall depths for each county in Connecticut. As indicated in Table 7-1, the sizing criteria are based on stormwater runoff generated by 24-hour duration storms of various return frequencies (i.e., design storms). Table 7-1 summarizes the hydrologic sizing criteria for stormwater treatment practices in Connecticut. Conditions where the recommended sizing criteria may not be applicable are identified in the following sections. Treatment practices sized for smaller treatment volumes/flows or exemptions from certain criteria may be appropriate in these situations, at the discretion of the review authority. Some of the sizing criteria presented in this chapter may not be practical to meet due to space limitations, soil conditions, and other site constraints which are common in redevelopment or retrofit applications. These and other types of projects not listed above, such as single family residential development, are encouraged to incorporate alternative site design, low impact development practices, and source controls to reduce imperviousness, runoff volumes, and stormwater pollutant sources.
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