Admin Order 58-14-01-F - Laserfiche WebLink

Home Browse Search

1.6.4 On -Site Retention and Detention On -site retention and detention includes structural detention facilities and infiltration facilities having the ability'to store and infiltrate the Flood Control Design Storm presented in Appendix K. When using infiltration options, the facility must either be located outside infiltration limited areas as identified on the City's Infiltration Limited Areas Map (See Appendix I) or the design professional must prove the viability of on -site infiltration using one of the following Infiltration Testing methods: • Open pit falling head, • Encased falling head, or • Double ring infiltrometer 1.6.5 Underground Injection Control Structures (UICs) Underground Injection Control Structures are regulated under the Safe Drinking Water Act. The UIC Program is administered by the Oregon Department of Environmental quality. This section provides general information only. Complete regulations and requirements are available on the Oregon Department of Environmental Quality (DEQ) website: httl2:/ /www.deq.state.or.us f wgluic /uic.htm The DEQ can also be contacted at 503 -229- 5696. Owners or operators of new and existing UICs are required to register and provide inventory data to DEQ. This information helps DEQ determine if the UIC is eligible for "rule authorization." Rule authorization allows the owner or operator to operate the UIC without a permit from DEQ. UICs that do not qualify for rule authorization must either be closed, modified to meet requirements for rule authorization, or the owner must submit a water pollution control facility permit application to DEQ and obtain a permit. Compliance with DEQ criteria for rule authorization must be demonstrated during the registration process. Compliance can generally be more readily accomplished if stormwater management efforts focus on maximizing source controls, using surface vegetated water quality facilities, and disposing of stormwater through surface infiltration or shallow subsurface facilities. Registration and inventory data should be submitted to DEQ at least 60 days in advance of potential start of construction. In some cases, DEQ and the .City will need additional information from the applicant in order to make a determination on the potential for use of a UIC. Stormwater Management Manual 1 -16 Eugene 2014