A. Required Plans and Information. The following plans and information shall be submitted with the application for activities and uses in a Water Resource Protection Zone which are required to be processed under a Type I or Type II procedure in chapter 18.5.1 including Limited Activities and Uses, Water Resource Protection Zone Reductions and Hardship Exceptions.
1. A narrative description of all proposed activities and uses including the extent to which any Water Resource Protection Zone is proposed to be altered or affected as a result of the proposed development activity or use (in terms both of square footage of surface disturbance and cubic yards of overall disturbance).
2. Written findings of fact addressing all applicable development standards and approval criteria.
3. Site development plan map, drawn to scale. The application shall include a site map of the subject property prepared by a licensed surveyor, civil engineer, or other design professional that includes the information described below. The Staff Advisor may request additional information based upon the character of the site or the specific nature of the proposal.
a. All watercourses identified (including any drainage ways, ponds, etc).
b. Surveyed location of the Water Resource Protection Zone, as described in section 18.3.11.040 Establishment of Water Resource Protection Zones. For applications involving single-family residences or Limited Activities and Uses, in lieu of a surveyed location, the Staff Advisor may approve a field determination of the Water Resource Protection Zone by the Staff Advisor or his/her designee in which the applicant shall be required to stake the top-of-bank or the upland-wetland edge and the boundary of the Water Resource Protection Zone.
c. For activities and use proposed within a Stream Bank Protection Zone: identification of the stream as being either fish-bearing or non-fish-bearing; identification of the top-of-bank or center line as required; and surveyed location of the stream’s floodway and floodplain, if applicable.
d. For activities and uses proposed within a Wetland Protection Zone: a wetland delineation (with an accompanying site map) prepared by a natural resource professional and that has been concurred with by the Oregon Department of State Lands (DSL); and an aerial photo with the wetland boundaries identified.
e. Topographic information at two foot contour increments identifying both existing grades and proposed grade changes.
f. Surveyed locations of all trees six inches in diameter at breast height (DBH) or greater located in the Water Resource Protection Zone and within 15 feet of the Water Resource Protection Zone, identified by edge of canopy, DBH, and species;
g. The outlines of non-tree vegetation, with a dominant species and any occurrence of non-native, invasive species identified.
h. Location of existing and proposed development, including all existing and proposed structures, any areas of fill or excavation, stream or wetland crossings, alterations to vegetation, or other alterations to the site’ s natural state.
i. The location of natural features, proposed and existing structures, and other proposed and existing improvements associated with lands within 100 feet of the Water Resource Protection Zone.
j. Proposed and existing land uses within 100 feet of the Water Resource Protection Zone.
k. The location of temporary fencing and erosion control measures installed to prevent encroachment and flow of material into the Water Resource Protection Zone, such as sediment fencing and hay bales, etc.
l. North arrow and scale.
m. Sources of information (federal, state, and local).
4. Mitigation Plan prepared in accordance with the requirements described in section 188.8.131.52 Mitigation Requirements.
5. Management Plan prepared in accordance with the requirements described in subsection 184.108.40.206.C., except a management plan is not required for residentially zoned lots occupied only by a single-family dwelling and accessory structures.
B. Building Permits and Development Activities. When approval of a planning action is not required, other permit applications for the construction of structures or other development activities on properties containing Water Resource Protection Zones shall be reviewed by the Staff Advisor to ensure that Water Resource Protection Zones are accurately identified on a site plan and that Limited Activities and Uses or other site disturbances will not be conducted within the Water Resource Protection Zone. Temporary fencing and erosion control measures may be required to be installed to prevent encroachment and flow of material or other debris into the Water Resource Protection Zone and to otherwise prevent impacts to the Water Resource Protection Zone by clearly identifying its boundaries. When required, these measures shall be installed and site-verified by the Staff Advisor before any permits are issued and prior to the commencement of excavation, grading, site clearing, construction, or similar site work resulting in changes to the land.
C. Required Information Waived – Determination. Applications under this chapter involving properties containing a Water Resource Protection Zone shall accurately indicate the locations of these features and all other information as described and required above. The Staff Advisor may waive one or more of the required elements of the site development plan map in subsection 220.127.116.11.A.3 if evidence is provided conclusively demonstrating that proposed excavation, grading, site clearing, construction, or similar actions resulting in changes to the property are not located within the boundaries of the Water Resource Protection Zone.