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HomeMy WebLinkAboutJOHNSON PROPERTY REZONE - 32-01 - CORRESPONDENCE - CITY STAFFCDPHE-6UCD Fax:3037820390 Sep 13 2001 13:37 Setbacks from Domestic Wastewater Treatment Works to Habitable Structures Page 2 ON At the time of site application action by the Division, habitable structures shall not exist within the prescribed distances unless mitigating factors have been approved by the Division. Habitable structures shall include residences, schools, and commercial structures. It shall be a condition of site approvals that the applicant shall be responsible for maintaining the appropriate separation distance for the life of the project. Background: Opposition by neighboring residents to the construction of wastewater treatment facilities has drawn.attention to the Division's lack of consistency in applying previous distance guidelines. Reference: Regulations for Site Application for Domestic Wastewater Treatment Works, 2.2.3(2)(6), 2.2.4(8), and 2.2.5(l)(f). Sep 13 2001 13:36 P.02 Colorado Water Quality Control Division WATER QUAunr • •' Policy No.: WQ5 P 7 Initiated By. Approved B Effective Date: Revision No - Policies & Procedures Revision Date: SETBACKS FROM DOMESTIC WASTEWATER TREATMENT WORKS TO HABITABLE STRUCTURES Purpose: 1. To minimize the potential for the airborne transmission of pathogens from wastewater treatment facilities to the occupants of habitable structures and for. odor complaints about the facilities by the occupants of those habitable structures; 2. To reduce the likelihood of public nuisance actions -stemming from odor complaints; and 3. To reduce opposition by neighboring property owners to proposed wastewater treatment facility construction. Policy/ Procedures: Minimum horizontal distances shall be maintained between habitable structures and new or expanded wastewater treatment facilities. Unless specific mitigating factors exist, or are proposed, to counter the potential for odor problems and/or aerosol drift, the following distances shall be considered the minimum acceptable for site application purposes; 1. Non -aerated lagoons, 1/4 mile, no exceptions.. 2.. Aerated lagoons less than 2 total surface acres with no surface aeration, 100 feet. 3. Aerated lagoons greater than 2 total surface acres and/or with surface aeration, 1000 feet, or with established vegetation barrier to reduce aerosol drift, 500 feet. 4. Small mechanical plants less than 100,000 gpd capacity and all facilities with building enclosure, 100 feet. 5. All other mechanical plants, 1000 feet. Troy Jones -Odor Buffer � � a�Page 1 From: Brian Janonis To: W. Paul Eckman Date: Thu, Sep 13, 2001 4:14 PM Subject: Odor Buffer Paul- The attached Site Application Policy from the Colorado Water Quality Control Division calls for 1000 ft setback from wastewater treatment works to habitable structures. Our planned expansion at the Drake Facility (DWRF) will require a site application. I just learned that we have been trying to buy the land from the Johnson's since the 1970's. I have directed Cliff Hoelscher to actively pusue a written option for the premix batch plant next to DWRF. This policy will also impact other property around our facilities so I would appreciate working with the City Attorneys Office & Planning to avoid future problems. CC: Gregory Byrne; John Fischbach; Steve Comstock; ...