Country EstatesProject TeamProject Description Design Requirements Project Approach Work Completed Projected WorkProject DescriptionSlide 5Slide 6Existing SiteDesign RequirementsPreliminary Feasibility StudyEnvironmental Site AssessmentCodes & RegulationsLID Design OptionsPreliminary Site PlanSlide 14Geotechnical AnalysisLaboratory Analysis of SamplesAssessment of Wastewater OptionsSlide 18Hydraulics and HydrologyWetlandsErosion Control PlanLID/Conservation HighlightsHighlightsCountry EstatesFinal ReportPARAGONProject TeamMike Reeves – Project ManagerCole Marr – Project EngineerBryce Beckstrom – Project EngineerAmanda Sheehe – Project EditorProject DescriptionDesign RequirementsProject ApproachWork Completed Projected WorkProject DescriptionProject Description66 Acres22 Estate Size Homes1-2 Acre Lots± 33 Acre Community SpaceHigh Efficiency Low Environmental ImpactExisting SiteProposed DevelopmentDesign RequirementsObjectivesDevelop 3 Wastewater Treatment OptionsDevelop Stormwater Management PlanIncorporate Greywater Treatment and ReuseWetland Habitat AreaCommunity Recycling ProgramDesign Trail Around SitePreliminary Feasibility StudyLocationZoningUtilitiesTransportation Site CharacteristicsEnvironmental Site AssessmentSite ReconnaissanceCurrent and Past UseTax InformationOther ConcernsInterviewsJosh Reed – Property OwnerHancock County Assessor’s OfficeCodes & RegulationsRegulation EntitiesHancock CountyConservation SubdivisionIDNRLEED10 State StandardsAASHTOLID Design OptionsPreliminary Site PlanDesigned Accordingto Hancock CountyWill Meet R-1 Zoning1-2 Acre Lots forAdequate SepticIn Contact with Mike Dale - Planning DeptUse Natural Lay ofLand to Reduce Cut and Fill in RoadwayRoundabout Designed to Standards (TFHDC)Preliminary Site PlanGeotechnical AnalysisWildcat Dynamic Cone PenatrometerTube Samples (6” &3’)Laboratory Analysis of SamplesUnconfined Compression Test (ASTM D2166)Atterberg Limits (ASTM D4318)Particle Size Analysis (ASTM D422)Assessment of Wastewater Options3 Options ConsideredConventional Septic System Presby Treatment SystemWetlands TreatmentAssessment of Wastewater OptionsDecision Matrix CriteriaDecision Matrix ResultsAlternativePercentage WeightingEnvironmental Impact30%Cost30%Feasibility20%Creativity20%AlternativeEnvironmental ImpactCost Feasibility Creativity TotalConventional Septic0.9 0.6 0.3 0.45 2.25Presby System0.3 0.3 0.15 0.31.05Wetlands Treatment0.6 0.6 0.45 0.3 1.95Hydraulics and HydrologyDesign for 100-yr floodRoute stormwater through wetlandsSize pipes to control floodingDesign water quality trenchesPromote natural overland flowExisting vs Proposed 100-year Storm RoutingWetlandsTreat 170 acresDesign wet pond to allow for sediment settling/quality volumeResearch vegetation for the wetlandsDesign outlet structure that controls 100-year floodErosion Control PlanMinimize sediment runoff into Miller DitchMinimize cut and fill on-site: 680cy cutReduce soil that leave site via truck tiresLID/Conservation Highlights50% Community Space20 Lots front community spaceEnviro-Septic Wastewater TreatmentDensity meets maximum requirementHighlights22 Lots, 1-2 Acres EachSite Layout/Roadway DesignSustainable LID Designs for:WastewaterGreywaterStormwater$440,000 Cost Estimates for