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June t3, 2022 <br />Updated August tg, 2022 <br />Page 2 of 3 <br />Geotechnical Letter <br />Comment: Is there a recommended reduced setback? <br />Response: <br />Provided building finish floors are situated at least 2 feet higher than the highest bioretentiion <br />(high static water level) elevations, these systems could be located to feet from upslope structures <br />and property lines. <br />CONSTRUCTION FIELD REVIEWS <br />Cobalt Geosciences should be retained to provide part time field review during construction in <br />order to verify that the soil conditions encountered are consistent with our design assumptions <br />and that the intent of our recommendations is being met. This will require field and engineering <br />review to: <br />• Monitor and test structural fill placement and soil compaction <br />• Observe bearing capacity at foundation locations <br />• Observe slab -on -grade preparation <br />• Monitor foundation drainage placement <br />• Verify soil conditions at stormwater system locations <br />• Observe excavation stability <br />• Verify all cutoff drain subgrades and placement <br />Geotechnical design services should also be anticipated during the subsequent final design phase <br />to support the structural design and address specific issues arising during this phase. Field and <br />engineering review services will also be required during the construction phase in order to <br />provide a Final Letter for the project. <br />CLOSURE <br />This report was prepared for the exclusive use of Rick Hardt and his appointed consultants. Any <br />use of this report or the material contained herein by third parties, or for other than the intended <br />purpose, should first be approved in writing by Cobalt Geosciences, LLC. <br />The recommendations contained in this report are based on assumed continuity of soils with <br />those of our test holes and assumed structural loads. Cobalt Geosciences should be provided with <br />final architectural and civil drawings when they become available in order that we may review our <br />design recommendations and advise of any revisions, if necessary. <br />Use of this report is subject to the Statement of General Conditions provided in Appendix A. It is <br />the responsibility of Rick Hardt who is identified as "the Client' within the Statement of General <br />Conditions, and its agents to review the conditions and to notify Cobalt Geosciences should any of <br />these not be satisfied. <br />www.cobaltgeo.com (2o6) 331-1097 <br />