2710 Selection Factors Convenience to Users Availability of Land Design and Layout of the AirportAirspace ObstructionsEngineering FactorsSocial and Environmental FactorsAvailability of UtilitiesAtmospheric ConditionsHazards Due to BirdsCoordination with other Airports
54Facility Layout Plan Facility includes Hangers Tiedowns Transient apronsProposed Facilities50 transient aprons176 based airplanes2028 future facilities243 based airplanes
55Airport Layout Plan Landside Terminal area plan Structures Parking Signing and stripingAccess roadsPerimeter road
56Terminal Area Plan Structures 12,000 sq. ft. terminal building 4,200 sq. ft. F.B.O buildingParking173 total parking6 disabled parkingGeometric designAASHTO Geometric Design of Highways and StreetsSigning and stripingCalifornia MUTCDCaltrans 2006 Standard Plans
57Access Road Signing and Striping California MUTCD 2006 Caltrans 2006 Standard PlansGeometric DesignAASHTO Policy on Geometric Design of Highways and Streets
58Perimeter Road Fire and maintenance access Based on Caltrans Highway Design ManualDesign speedWidth
60Pavement Design Overview Soil classification within the Lake Mathews project areaFlexible pavement designRigid pavement designFinal selection for pavement design
61Soil Types within project area Engineering properties Soil ClassificationSoil Types within project areaEngineering propertiesMapUnitDepth(inch)USDA TextureUnifiedClass.CBR ValueAssignedCaD20-13Fine sandy loamSM13-22Loam, clay loamCL5 -1522-62Weatheredbedrock---LaC0-12LoamCL, CL-ML5-1512-32Clay loam, clayCH, CL3-532-54ChD220-40Bfc0-23Clay20-4532-3620-47USDA classification of soils was found using Web Soil Survey v2.0.CBR value was found using FAA standards.A CBR value of four was selected.
62Flexible Pavement Design Due to the gross weight of our service aircraft (Less than12,500 pounds) our design was based on light weight aircraft criteria.FAA specifies that no reduction in thickness should be made for “noncritical” areas of pavement (i.e. Apron).
63Results of Flexible Pavement Design Hot Mix Asphalt Surface:Four inchesStructural Base:Three inchesSubbase:Nine inchesSubgrade Compaction:90% for Four to Eight inchesReferences: Federal Aviation Administration: AC D, Chapter 5 Pavements for light aircraft.
65Rigid Pavement DesignSubbase: Is required due to the soil type CH located within our runway.Subgrade: 90% compaction required for soil types found within our project site.Jointing: Not to exceed maximum spacing.
73Grading of Non-Critical Areas Access Road – 2% from the center line to the gutters on either side.Perimeter Road – 2% away from runway and taxiway.Apron – Design to allow surface flow of 1% away from the taxiway to the south edge of the apron area, where the water is treated.Structures – For buildings and other structures a 2% grade for a minimum of 10 feet was used.
74Final Grading PlanExisting and proposed surfaces showing the grading needed for site
75Earthwork Quantities Cut: Cubic Yards Fill: Net Earthwork: 54,245 29,280Cut 24,965Summary: Based on the designed grading plan a net cut of 24,965 cubic yards will need to be removed from the project site.
77Drainage Promotes safe and efficient operations Handles airport surface runoffDiverts runoff away from Lake MathewsTwo drainage areasRunway handled by Volume Based drainageRamp area handled by Flow Based drainageBased on Riverside County Flood Control District BMP Handbook
78Runway Runoff Corrugated steel pipe Ponding Outfall Slope = 0.005 Di = 15”, Df = 24”Inlets at 400 feet or lessWater quality inletPondingRainfall > 0.85 in/hr10 acre-ft storageOutfallExtended detention basin
79Ramp Runoff Filter strip (turf grass) Infiltration trench 15’ depth Wide as the rampRemoves pollutants and sedimentInfiltration trenchAggregate 1-3”48 hr drawdownOverflow pipe to detention basinSource: RCFCD BMP Handbook
81Environmental Noise Impact Environmental ConcernsWith restrictions in time, we will concentrate on noise impactINM: Integrated Noise ModelFAA approved Airport Noise Exposure MapNoise contours generated with real-time values and coordinatesGeneral allowable thresholdFAA (Advisory Circular) 65 dB7 different thresholds of noise level
82Noise Assessment Data Airport Location Runway Position Aircraft Models Lat:Length 4000 ftGroup A-IILong:Width 75 ftDHC6 Dash 6Elevation 2080Runway 9Group B-IIAnnual Operations 97000FAL20 Falcon20Daily Operations 271Runway 27HelicopterB206L Bell 206L Long Ranger
83Importing Supplemental Data CAD graphicsAirport runway layoutAutoCAD DXF file for graphic enhancementTerrain dataTopographic map overlaySignify elevation affecting noise propagationStreet censusStreets, highways, hydrographic features, civil boundariesOverlays street map dataPopulation censusPopulation pointsEnables visual inspection of sound impact on neighboring residents
89OutcomeViable source for current and future noise predictions generated by Lake Matthews Airport (LMA) and its componentsEnsure LMA from causing unwanted noise around neighboring communitiesHomes, schools, businessesEasement requireddB LevelPopulationAcres55.08944113.560.05292158.365.0194913.970.015155.475.040.180.010.585.03.1
90Sound Decibel Threshold 65 dB ThresholdNot designated under Federal, State, or local lawResponsibility for permissible land use remains with local authoritiesSound proofing packages
95Lake Mathews AirportAviation demand levels deemed an additional airport necessarySelection of an appropriate site locationSuccessful completion of the Master PlanDesign and layoutEnvironmental noise impactCost analysis