Loading...
CC - Engineer Statement ROCK SOLID CIVIL Civil Engineering and Land Development Consulting June 24, 2021 City of Meridian Planning Division 33 E. Broadway Avenue Suite 102, Meridian, ID 83642 Re: The Landing Subdivision No. 13 - 600 S. Linder Road, Meridian, ID Statement of Centerline Groundwater Elevations To whom it may concern: On December 22, 2020,the City Council for the City of Meridian approved the Findings of Fact, Conclusions of Law and Decision &Order (FOFCLs) for The Landing South Subdivision (CKA The Landing Subdivision No. 13), Case No. H-2020-0005. This letter serves as a statement regarding seasonal groundwater elevations relative to design street centerline (CL) finish elevations for The Landing Subdivision No. 13. In 2017, Site Consulting LLC conducted a geotechnical investigation on The Landing Subdivision No. 12 (TLS12) formerly known as Nursery Subdivision. Long term groundwater monitoring was conducted as part of that geotechnical investigation and summarized in Site Consulting LLC's Groundwater Research report for the Nursery Subdivision (File#17122-C). Based on the results for groundwater monitoring Well #1, which was located closest to TLS13, seasonal high groundwater is estimated to remain greater than 7.5-feet below ground surface throughout the year. This corresponds to a shallow groundwater elevation below 2588.15. The design street CL elevations on this project are set at an approximate elevation of 2596.0.This corresponds to a separation of greater than 7.5-feet between the CL of the roadways and the established peak groundwater elevation. Therefore, in the opinion of this engineer,the street centerline (CL) elevations are set at a minimum of three (3) feet above the highest seasonal groundwater elevation. Derritt Kerner, P.E. Project Civil Engineer �SS%ONA t £NC \CENSER 17887 O/4 p t)F \aP� F'�RITT www.rocksolidcivii.com ROCK SOLID CIVIL,LLC 270 N.271h Street,Boise,ID 83702 dkerner@rocksolidcivil.com tel 208.342.3277 fax 208.376.1821