The purpose of the Open Space and Institutional Zone is to provide for development, use and management of parks, school grounds, golf courses, cemeteries and other relatively large tracts of publicly-used land. This zone includes those areas that were in Hammond's Recreation and Open Space Zone.
The following uses and activities and their accessory uses and activities are permitted in the OSI zone if the Community Development Director determines that the uses conform to the standards of Section 16.52.040, applicable Development Code standards, and other City laws:
A. 
Maintenance and repair of existing facilities.
B. 
Uses and activities allowed under the applicable City-approved management plan for the facility.
C. 
Replacement and repair of existing public recreational park facilities or construction of minor betterment and improvements to existing park facilities which do not cause an increase in overall visitor capacity or have significant land use impacts (e.g., shelter, restrooms, replacement or repair of existing roads and parking spaces).
D. 
Outdoor recreation.
E. 
Temporary uses subject to the provisions of Chapter 16.240.
F. 
Government buildings and uses.
G. 
Transportation facilities and improvements subject to the standards of Section 16.20.040.
H. 
Park host (one site) for dedicated City parks and located in an approved RV site. Subject to provisions of Section 16.52.040(J) (see definitions).
I. 
Community garden(s) (see definitions).
J. 
Similar uses as those listed in this section.
The following uses and activities and their accessory uses and activities may be permitted in the OSI zone when approved under Chapter 16.220, and subject to the provisions in Section 16.52.040, Development Standards:
A. 
Development of new facilities or uses not included in the applicable City-approved management plan.
B. 
Amendments to a site management plan.
C. 
Golf course.
D. 
Communication facilities subject to the standards of Chapter 16.148.
E. 
Construction of new park facilities or existing public recreational park expansions which increase overall visitor capacity or which have significant land use impact (e.g., new campgrounds, picnic areas, new roads).
F. 
Similar uses as those listed in this section.
The following standards are applicable in the OSI zone:
A. 
Setbacks. The minimum setback from the property line for buildings is 15 feet.
B. 
Lot Coverage. Buildings shall cover not more than 50% of the lot area.
C. 
Building Heights. No building shall exceed a height of 30 feet above grade.
D. 
All uses shall comply with access requirements, signs standards, parking and loading standards in Chapters 16.128 and 16.144.
E. 
Conditional uses shall meet the requirements in Chapter 16.220.
F. 
Large scale developments shall satisfy requirements in Chapter 16.224, Planned Unit Developments.
G. 
All development shall comply with the wetland and riparian area protection standards of Chapter 16.156.
H. 
All other applicable ordinance requirements shall be satisfied.
I. 
All new sewer and water connections for a proposed development shall comply with all City regulations.
J. 
City of Warrenton shall provide the park host RV site, within a dedicated City park, connections to utilities (City water and sewer, and electricity). Length of stay per host shall not exceed six months in a calendar year, and shall be in a State-licensed RV.