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HomeMy WebLinkAbout2021AGD4097 Vista Rims Townhomes Subdivision Approval STATE OF IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY 650 Addison Avenue West,Suite 110,Twin Falls,Idaho 83301 Brad Little,Governor (208)736-2190 Jess Byrne,Director July 14, 2021 By a-mail:jj@lytlesigns.com J.J. McBride 100# Partners, LLC 3373 Willow Way Twin Falls, Idaho 83301 Subject: Plan Review, Vista Rims Townhomes Subdivision, submitted July 2, 2021, Twin Falls County. Dear Mr. McBride: Tim Vawser with EHM Engineers as submitted the above referenced plans to this office for our review and approval. The design plans and specifications for the project appear to comply with state standards and the project is hereby approved for construction. Our approval is for design only; final system approval is given after it is established that the system is operating properly. Any major changes or changes that might result in violations of Idaho regulations must be reviewed by this office prior to field installations. This office must also be kept informed of the scheduling of all construction phases so that spot inspections can be made as necessary. The Idaho Department of Environmental Quality's (DEQ) approval of the plans and specifications for the design of the referenced facilities does not imply approval by other County, State, and or Federal agencies for construction or operation of the water and wastewater systems. This approval will expire July 14, 2022. If construction is not completed at that time, plans and specifications will need to be resubmitted for approval before proceeding further with construction. DEQ has not conducted design review for stormwater plans and specifications and has made no determination regarding whether the plans and specifications include appropriate BMPs to protect ground water and surface water quality. DEQ reviews the location of stormwater conveyances to determine public health and safety issues associated with construction of public drinking water systems. DEQ finds that the location of stormwater conveyances for this project meet the required separation distances to public drinking water system features of concern as per IDAPA 58.01.08. J.J. McBride July 14, 2021 Page 2 of 2 If the construction phase of this project is anticipated to disturb one acre or more of land, or is part of a larger project that disturbs one acre or more of land, then the project may be subject to regulation under the Federal Clean Water Act National Pollution Discharge Elimination System program administered by the U.S. Environmental Protection Agency. Stormwater events that occur during construction should be managed according to the site-specific Stormwater Pollution Prevention Plan and the other requirements of the general permit. The on-line Construction General Permit and Notice of Intent can be found at http://www.epa.govinpdes. If this project uses underground injection control (UIC) devices to treat and dispose of stormwater, then the project may be subject to regulation under the "Rules And Minimum Standards For The Construction And Use Of Injection Wells In The State Of Idaho" (IDAPA 37.03.03) administered by the Idaho Department of Water Resources (IDWR) or under authority of local government. Additional information on IDWR'S UIC program can be found at: http://www.idwr.idaho.gov/water/welllinjection.htm. It is the project owner's responsibility to use appropriate stormwater best management practices to prevent ground and surface water contamination. Within 30 days after construction, a professional engineer registered in the State of Idaho must provide this office with as-built drawings, or a letter of certification stating that the project was installed substantially according to the approved plans. We have forwarded one (1) stamped approved electronic copy of the plans to Mr. Vawser for his records and to be on site during the construction phase of the project. If you have any questions, please do not hesitate to contact this office at (208)736-2190. Sincerely, �L� Joseph Otero, P.E. Senior Water Quality Engineer JO:ss c: Tim Vawser, EHM Engineers, Inc., tvawser@ehminc.com Troy Vitek, P.E., City of Twin Falls, tvitek@tfid.org