The purpose of the sewage treatment plant (S-T-P) overlay zone is to guide the development of property within a defined area surrounding the Hale Avenue sewer plant, in order to limit the exposure of future residents to odors from the sewer plant, to limit the number of new residential dwelling units to be located within said area, and to allow certain limited nonresidential uses. At the same time, the uses which would be located within this overlay zone should not, themselves, cause adverse impacts on adjacent properties.
(Zoning Code, Ch. 106, § 1067.1)
The S-T-P overlay zone may be used in combination with residential zoning on the properties within 1,000 feet of the Hale Avenue sewer plant.
(Zoning Code, Ch. 106, § 1067.2)
Establishment of the S-T-P overlay zone, in combination with a designated residential zone, shall be designated on the official zoning map of the city by incorporating the perimeter line shown on Figure 33-672, describing the boundaries of the overlay area, onto the zoning map itself. Areas "A" and "B" (which includes the present site of the sewer plant), which are also described in Figure 33-672, shall also be delineated on the zoning map. Legal descriptions for both areas "A" and "B," as well as the entire overlay study area, are incorporated into city council Ordinance No. 82-15.
It is not anticipated that this overlay zone will be applied in any other area of the city.
Figure 33-672-SEWAGE
Sewage Treatment Plant Overlay Zone
(Hale Avenue Recovery Facility)
(Zoning Code, Ch. 106, § 1067.3)
(a) 
All principal uses and structures, as set forth in the provisions of the zone with which the S-T-P zone is being combined, except as modified in section 33-676, conditional uses and structures.
(b) 
All residential uses existing on the effective date of this ordinance[1] shall be considered conforming uses and shall be entitled to all zoning rights provided conforming uses.
[1]
Editor's Note: The effective date of the ordinance codified in this article is April 16, 1982.
(c) 
4840—Sewage disposal (excluding 4843—sewage sludge drying beds).
(Zoning Code, Ch. 106, § 1067.4)
Accessory uses and structures set forth in the provisions of the zone with which the S-T-P overlay zone is combined shall be permitted.
(Zoning Code, Ch. 106, § 1067.5)
(a) 
In sub-area "B" the following uses are discouraged, but may be allowed, subject to the issuance of a conditional use permit:
Use No.
Use Title
1111
Single-family dwellings, detached
1116
Mobilehomes on parcel alone
(b) 
Conditional uses and structures as set forth in the provisions of the zone with which the S-T-P overlay zone is combined shall be permitted, subject to the issuance of a conditional use permit.
(c) 
In addition to the conditional uses and structures permitted by paragraph (a) above, the following conditional uses shall also be permitted in sub-area "B," subject to the issuance of a conditional use permit:
Use No.
Use Title
6299
Privately owned wedding chapel
6375
Mini-warehousing and storage
Such additional restricted business service uses as determined by the planning commission to be consistent with the purpose and intent of the S-T-P overlay zone, and which would create minimal traffic, light, glare and noise impacts
(Zoning Code, Ch. 106, § 1067.6)
(a) 
Property development standards as set forth in the provisions of the zone with which the S-T-P overlay zone is combined, shall also apply within the respective area of the S-T-P overlay zone.
(b) 
In addition to the property development standards imposed by paragraph (a) above, the following standards shall also apply:
(1) 
As a condition of approval for any new residential use or expansion of any existing residential use, an "easement for air and odor" shall be granted to the city by the property owner. This easement shall be in a form satisfactory to the city attorney. The easement shall have the dual purpose of granting the city the right of "free passage of malodorous air" over the property, and to serve as a warning to future residents in this area that the potential for such odors may exist from time to time.
(2) 
Any new residential development shall incorporate a plot plan design which maximizes the physical distance of future residents from the sewer plant.
(3) 
Density bonuses otherwise allowed in connection with PUA (planned unit approval) applications may not be granted in the S-T-P overlay zone.
(4) 
Any new nonresidential development shall incorporate a plot plan design which screens and buffers all neighboring residential uses from visual, light, glare and noise impacts.
(Zoning Code, Ch. 106, § 1067.7)