18E.110.060 – Appendix C Geological Assessment – Shoreline Erosion Hazard Geotechnical Report
A. A geotechnical report shall, at a minimum, include the following:
1. The cover letter for the document shall clearly identify the submittal as a "Shoreline Erosion Hazard Geotechnical Report."
2. The dates when the geological assessment was conducted. The date when the report was prepared.
3. The parcel number(s) of the site.
4. Site address, if one has been assigned by the County.
5. A detailed description of the project (including the proposed land use) and a description of the area to be developed.
6. A summary of the results, conclusions, and recommendations resulting from the geological assessment, as set forth in PCC 18E.110.030 B. The summary shall specifically address:
a. In the case of proposed development, whether it is possible given the physical constraints of the property (size, shape, building setbacks, utility requirements, etc.) to locate the proposed development outside of the 120-year area of regression based on natural shoreline processes.
b. In the case of proposed development, if it is not possible to locate the development outside of the 120-year area of regression (based on natural processes), evaluation whether beach nourishment and/or soft armoring techniques can be used to slow the rate of regression such that the proposed development is no longer within the 120-year regression area.
c. Whether any existing structures will be threatened within the next ten years or whether the buildability of an undeveloped site will be threatened within the next ten years, if hard armoring is not provided.
d. Evaluate whether any proposed shoreline erosion protection measures will cause an increase in the rate of regression on neighboring properties.
7. An accurate site plan drawn at a scale of 1" = 20', 1" = 30', 1" = 50' (or other scale deemed appropriate by the Department) is required. The Department may require that the site plan information listed below be based on a field survey by a licensed surveyor. The site plan shall include:
a. The limits/location of the active shoreline erosion hazard area(s) set forth in PCC 18E.110.020 B.2.
b. The limits of the required shoreline erosion hazard buffer based upon the requirements set forth in PCC 18E.110.050 A.
c. The limits/location of the Shoreline Erosion Hazard Management Area.
d. The limits/location of the 120-year regression area based on natural shoreline processes and, if applicable, based upon proposed shoreline protection measures.
e. The location of any existing structures, utilities, on-site septic systems, wells, and stormwater management facilities.
f. The location of any proposed structures, utilities, on-site septic systems, wells, and stormwater management facilities.
g. The full geographical limits of the proposed project area (area to be developed).
h. Dimension of the closest distance between the identified active shoreline hazard area boundary and the proposed project area.
i. Dimension of the closest distance between the 120-year regression line and the proposed project area.
j. Existing contours on the site at 2-foot intervals.
k. Property lines for the site.
l. North arrow and scale.
8. A discussion of any proposed shoreline protection measures including design and construction drawings is required.
9. A list of references utilized in preparation of the report.
10. The name, mailing address, and telephone number of the geotechnical professional(s) who prepared the report.
11. The name, mailing address, and telephone number of the property owner.
B. The geotechnical report shall be prepared under the responsible charge of a geotechnical professional(s) and be signed, sealed and dated by the geotechnical professional(s).
C. The Department may request a geotechnical professional to provide additional information in the geotechnical report based upon existing conditions, changed conditions, or unique circumstances occurring on a case by case basis.
D. Geotechnical reports shall be in conformance with a format that is pre-approved by the Department.