New developments in Open Source Spatial Databases

New developments in Open Source Spatial Databases

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  • mémoire - matière : databases
  • fiche de synthèse - matière potentielle : resources
Beyond PostGIS New developments in Open Source Spatial Databases Karsten Vennemann Seattle
  • geometrycollection focus ogc sfs
  • postgis database java sql
  • spatial index table
  • server modes
  • postgis
  • full range of ogc
  • postgresql
  • memory databases
  • functions

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ACE Charter School Mayfair Campus Project Initial Study/Mitigated Negative Declaration APPENDIX E NOISE MONITORING DATA
ACE Charter School Project (EACE) 2000 Kammerer Ave, San Jose, CA 95113 Appendix E: NoiseData Prepared by TRA Environmenal Sciences, June 2011
Table E1: Summary of Site N1 Noise Monitoring Data
Site N1 (30 feet from South Sunset Ave) Date TimeDuration Leq  25May 110:00 360046.5  25May 111:00 360043.5  25May 112:00 360043.3  25May 113:00 360046.4  25May 114:00 360050.0  25May 115:00 360054.2  25May 116:00 360057.8  25May 117:00 360057.5  25May 118:00 360058.0  25May 119:00 360057.5  23May 1110:00 360067.7  23May 1111:00 360065.4  23May 1112:00 360065.9  23May 1113:00 error  23May 1114:00 360066.6    23May 1116:00 360056.2  23May 1117:00 360056.1  23May 1118:00 360052.7  23May 1119:00 360051.0  23May 1120:00 360052.9  23May 1121:00 360050.0  24May 1122:00 360051.1  24May 1123:00 360048.6
Note:
Ldn 56.5 53.5 53.3 56.4 60.0 64.2 67.8 57.5 58.0 57.5 67.7 65.4 65.9  66.6  56.2 56.1 52.7 51.0 52.9 50.0 61.1 58.6
Lmax 68.2 61.1 59.6 59.6 61.8 67.7 83.0 74.8 73.6 69.3 99.8 93.5 99.0  96.7  81.6 78.3 71.8 65.6 79.0 68.7 64.2 68.5
Lmin 39.3 38.3 38.3 40.8 44.5 45.9 50.8 53.3 52.8 53.8 46.3 46.3 48.2  47.8  46.8 46.3 45.0 45.0 44.2 44.0 45.2 42.0
L(1) 44.0 44.6 44.7 48.4 51.9 56.2 58.3 58.8 59.7 59.0 58.6 58.2 58.9  58.0  58.3 56.2 55.5 53.2 54.9 52.7 53.2 48.0
L(10) 42.9 42.8 42.5 46.6 50.4 54.3 56.9 57.0 57.6 57.4 52.8 53.2 55.2  53.6  53.9 52.2 51.1 50.1 50.7 47.8 49.8 45.8
L(50) 42.4 42.1 41.6 45.8 49.5 53.4 56.2 56.4 56.8 56.8 51.4 51.5 53.9  52.0  52.3 50.7 49.6 49.1 48.4 46.7 48.9 45.2
L(90) 41.1 40.0 39.7 43.4 46.7 49.3 53.8 54.7 55.0 55.3 49.0 48.3 51.2  49.5  49.3 48.3 46.8 47.1 45.7 45.1 46.7 43.2
Site N1 Average:60.1 61.990.6 47.856.2 53.1 52.1 49.9 Site N1 13:00 and 15:00 discarded due to apparent error (high Lmax) Increasing 8 AM and 5 PM Leq values by 4.8 dB and 6 dB, respectively, yields an Ldn of 62.2 dBA.
Table E2: Summary of Site N2 Noise Monitoring Data
Site N2 (230 feet from South Sunset Ave) Date TimeDuration Leq  25May 110:00 360043.1  25May 111:00 360042.8  25May 112:00 360042.8  25May 113:00 360045.8  25May 114:00 360048.9  25May 115:00 360051.8  25May 116:00 360055.8  25May 117:00 360055.2  25May 118:00 360056.1  25May 119:00 360056.9  23May 1110:00 error  23May 1111:00 360062.8  23May 1112:00 360067.3  23May 1113:00 360058.9  23May 1114:00 360060.1  23May 1115:00 360053.6  23May 1116:00 360060.9  23May 1117:00 360052.5  23May 1118:00 360049.6  23May 1119:00 360049.3  23May 1120:00 360048.6  ay: .  24May 1122:00 360050.5  24May 1123:00 360046.2
Note:
Ldn 53.1 52.8 52.8 55.8 58.9 61.8 65.8 55.2 56.1 56.9  62.8 67.3 58.9 60.1 53.6 60.9 52.5 49.6 49.3 48.6 . 60.5 56.2
Lmax 53.2 48.7 53.3 51.5 63.0 57.6 77.5 60.8 65.6 63.6  93.8 98.6 89.3 89.0 72.0 95.6 69.4 61.3 62.0 61.4 . 63.8 56.0
Site N2 Average:57.6 59.688.1 Site N2 10:00 discarded due to apparent error (high Lmax)
Lmin 40.7 38.9 38.7 41.3 43.5 45.1 49.8 52.3 51.9 53.4  45.9 48.2 45.2 46.9 48.1 48.0 46.8 45.2 44.7 44.0 . 46.0 42.7
L(1) 44.2 44.8 44.7 47.8 50.8 54.0 56.7 56.7 57.7 58.2  56.0 57.5 54.4 56.8 54.9 55.1 54.2 51.7 50.8 49.9 . 52.0 47.8
L(10) 43.2 43.2 42.7 46.2 49.4 52.7 55.5 55.5 56.4 57.2  52.0 54.0 50.8 51.9 52.4 52.3 50.9 49.4 48.7 47.6 . 49.9 46.4
L(50) 42.7 42.3 41.9 45.4 48.7 51.8 54.9 54.9 55.7 56.6  50.6 53.0 49.8 50.7 51.5 51.5 50.1 48.5 48.1 46.9 . 49.3 45.7
L(90) 41.4 40.3 40.3 43.5 45.9 48.0 52.5 53.5 54.0 55.2  47.5 50.5 47.5 48.6 49.6 49.6 48.4 46.6 46.4 45.5 . 47.4 44.0
47.4 54.2 52.0 51.2 49.2
Table E3: Groundborne Vibration Estimates
Vibration  Peak Particle Velocity (PPV) and Decibel (Lv) Calculation
Reference Approximate Estimated Equipment PPV@25 Lv@25 PPV@100 feet feet feet Vibratory94.0 0.046roller 0.21 LargeBulldozer 0.08987.0 0.019 SmallBulldozer 0.00358.0 0.001 Loaded86.0 0.017Truck 0.076 Jackhammer 0.03579.0 0.008 Note: Estimated PPV calculated as: PPV(D)= PPVref*(25/D)^1.1 Where:PPV(D)=Estimated PPV @ Distance PPVref=Reference PPV @ 25 feet D= Distancefrom equipment to receiver n= ground attenuation rate Estimated Lv calculated as: Lv(D)=Lv(25 feet)30log(D/25) Where:Lv(D)=velocity level in decibels v=RMS velocity amplitude @ 25 feet
a e:
 qupmen sma es
Estimated Lv@100 feet 75.9 68.9 39.9 67.9 60.9
HVAC Equipment  dBA Estimate Equipment ReferenceEstimated EstimatedEstimated dBA@10ft dBA@75ft dBA@75ft dBA@75ft 1unit 1unit 2units 5units HVAC 69.552.3 55.359.3 HVAC 7052.8 55.859.8 HVAC 7557.860.8 64.8 HVAC 8069.862.8 65.8 HVAC 8574.867.8 70.8 Note: Estimated dBA at 75 feet based on 6 dBA reduction for each doubling of distance from source. Estimated dBA at 75 feet for multiple units calcualted as: SPL(Total)= SPL(1)+10LOG10(N) Where: SPL(Total)= Total Sound Pressure Level SPL(1)= Sound pressure level of one source N= Numberof identical sources to be added Italic font indicates noise levels are above exterior noise quality goal of 60 dBA.