appendix d
APPENDIX D
19 March 2015 Cameron Jeffs Churchside Court LLC 6 Ashdown Place Half Moon Bay, CA 94019 Project: Church Street Construction Subject: Environmental Noise Test Report Dear Cameron: As request by you, we have conducted an environmental noise study at the subject site. We have reviewed the Mitigation Measure MM 4.12acd 1 & 2 excerpts provided by you. It is understood that “the project applicant shall incorporate noise attenuation measures (barriers) into the site plan/subdivision design to reduce noise levels at exterior residential lots to less than 60 dB CNEL”.
PROCEDURE An automated sound level meter (SLM) and data logger were placed on the site at Position 0 to continuously collect data for a 24 hour minimum period. Additional simultaneous measurements were conducted with a second SLM at Positions 1 - 4 for correlation with primary measurements. These additional 15 minute samples were to assess the differentials to Position 0. Refer to the attached Measurement Plan. The SLMs were calibrated prior to the start of measurements. Measurements were made in accordance with FHA standard methodology (attached).
TEST RESULTS The average (Leq), maximum (Lmax) and minimum (Lmin) dBA levels were logged at 15 minute intervals and the CNEL calculated. Refer to the attached spreadsheet. Measured noise levels at Positions 1 -4 were less than measured noise levels at the primary Position 0 during simultaneous 15-minute samples. Position 0 has the highest noise levels tested and represents the worst case for the project site. The CNEL calculated is 53.6 dBA.
Frank Hubach Associates, Inc
4905 Central Ave, Ste 100 Richmond, CA 94804
Acoustics and Vibration Engineering Consultants
Phone Fax Email:
510-528-1505 510-528-1506 [email protected]
Church Street Construction Environmental Noise Test Report 19 March 2015 CONCLUSION All the residential lots on this development site are less than 60 dBA CNEL. There is no noise attenuation measure required.
Very truly yours,
Frank J. Hubach President
reviewed by:
Stephen R.W. Neal Vice President
attached:
Measurement Plan (Measurement Plan.pdf) FHA standard methodology (NoiseMethSTD.pdf) CNEL Data (CNELdata.pdf)
FJH/SN:fjh J:\69101\A\ENoiseReport.wpd
Frank Hubach Associates, Inc
510-528-1505
Pos 0
Pos 2 Pos 3
MEASUREMENT POSITIONS
Pos 1
Pos 4
FHA STANDARD AIRBORNE NOISE METHODOLOGY I. INSTRUMENTS The following instruments are used to conduct airborne noise measurements in the field: (1) Bruel & Kjaer (B&K) 2230 or Larson Davis 820 Precision Sound Level Meter (1) B&K 4155 or Larson Davis 2560 ½-inch Microphone (1) B&K 4230 Acoustic Calibrator or B&K 4220 Pistonphone Calibrator (1) B&K 1625 1/3 - 1/1 Octave Filter Set (1) Marantz PMD660/680 Portable PC Card Recorder, HHB PDR 1000 Professional DAT Recorder, or YMEC Digital Recorder
The following instruments are used in the field or laboratory to analyze airborne noise data: (1) Marantz PMD660/680 Portable PC Card Recorder or HHB PDR 1000 Professional DAT Recorder (1) B&K 2131 or YMEC Digital Frequency Analyzer (1) Personal Computer (PC) (1) Printer
1 Frank Hubach Associates, Inc
510-528-1505
FHA Standard Airborne Noise Methodology
II. PROCEDURE Airborne noise measurements are made at selected locations in accordance with the following methodology: Prior to the measurement session, the Sound Level Meter and the corresponding microphone are assembled and coupled in turn to the acoustic calibrator. The Sound Level Meter is adjusted to match the known calibration level to within +/- 0.2 dB. The resulting calibration signal is recorded on the recorder to allow subsequent alignment of analysis equipment. Noise measurements are made by positioning the Microphone/Sound Level Meter at the desired location and recording the resulting signal on the recorder for subsequent laboratory analysis. In the laboratory, the recorded calibration signal is used to align analysis equipment to within +/- 0.2 dB of the initial calibration level. Overall system accuracy is +/- 2.0 dB from 10 Hz to 12,500 Hz. Airborne noise data is typically analyzed on the Digital Frequency Analyzer for 1/3 or 1/1 octave band levels as desired. The results of analysis are interfaced to a PC and printed as required. Sound Level Meters conform to ANSI (American National Standards Institute) SI-4-71 "Specifications for Type 1 Sound Level Meters".
S:\STD\NOISMETH.STD
2 Frank Hubach Associates, Inc
510-528-1505
320 Church St. FHA # 691-01A Position 0 Date 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15
Time Leq Lmax Lmin 12:00:00 57.3 63.5 51.1 12:15:00 54 60 51.1 12:30:00 54.6 59.7 50.8 12:45:00 53 64.9 50.6 13:00:00 51.6 60.2 49.5 13:15:00 51.4 56.9 49.4 13:30:00 48 53.9 42.3 13:45:00 51.1 59.7 44 14:00:00 51 61.2 43 14:15:00 49.1 60.8 42.7 14:30:00 50.4 61.7 44.4 14:45:00 52.3 60.3 45.3 15:00:00 53.1 62.8 46.4 15:15:00 52 61 44.7 15:30:00 51 60.9 43.8 15:45:00 51.5 57.8 44.8 16:00:00 52.9 61.8 44.9 16:15:00 53.6 61.8 46.1 16:30:00 54 66.6 46.1 16:45:00 53.4 60.4 45.4 17:00:00 53.7 62.9 46.2 17:15:00 55.7 70.7 47.4 17:30:00 54.4 63.5 45.9 17:45:00 53.5 64.7 46.7 18:00:00 53.5 60.2 46.7 18:15:00 53.2 67.1 45.2 18:30:00 49.9 55.7 43 18:45:00 49.1 62.7 40.9 19:00:00 49.7 56 42.5 19:15:00 49.1 55.6 43.4 19:30:00 47.6 56.6 40 19:45:00 46.9 53 40 20:00:00 46.7 55.1 37.9 20:15:00 47.8 54.6 40.9 20:30:00 49.7 61.4 41.4 20:45:00 48.1 55.2 41.2 21:00:00 47.8 60.5 39.6 21:15:00 47.6 61.4 40.5 21:30:00 48.6 60.4 39.5 21:45:00 47 55.2 40.2 22:00:00 45.6 54.3 37.2 22:15:00 43.5 55.1 36.2 22:30:00 43.8 52 35.4 22:45:00 41.7 52 34.5 23:00:00 42.9 52 33.1 23:15:00 41.5 52.5 30.6 23:30:00 41.2 51.6 30.6 23:45:00 40.2 53.8 30.1
Date 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15
Time Leq Lmax Lmin 0:00:00 37.4 45.2 30.8 0:15:00 36.4 44.3 30.1 0:30:00 37.9 51.9 29.1 0:45:00 41.5 54.8 30.6 1:00:00 41 52.2 32.1 1:15:00 37.6 48.2 31.3 1:30:00 38.6 50.3 31.4 1:45:00 38.2 50.6 30.7 2:00:00 38.8 52.1 30.8 2:15:00 40.5 54.9 31.4 2:30:00 37.4 50.1 30.9 2:45:00 41.7 51.2 33 3:00:00 41.2 53.5 33.9 3:15:00 41.9 55.3 33.9 3:30:00 37.7 51.2 29.8 3:45:00 40.9 56.3 30.9 4:00:00 38.5 52.8 31.7 4:15:00 38.8 46.9 31.5 4:30:00 43.5 56.8 33.5 4:45:00 44 56.9 33.5 5:00:00 47.5 58.4 37.8 5:15:00 48.3 62.9 38.5 5:30:00 48.6 60.2 41.8 5:45:00 49.3 60.3 42.4 6:00:00 50.6 60.4 43.7 6:15:00 52.2 68.3 43.8 6:30:00 49 54.1 42.9 6:45:00 50.8 65.6 43.5 7:00:00 52.2 60.5 46.1 7:15:00 51.9 57.7 46.3 7:30:00 52.7 59.9 45.5 7:45:00 52.6 64 45.6 8:00:00 54.2 59.2 47.8 8:15:00 52.6 59.9 45.3 8:30:00 53 59.3 46.2 8:45:00 52.6 57.4 45.7 9:00:00 51.9 59.8 44.2 9:15:00 50.5 59.9 44.3 9:30:00 49.6 59.5 43.6 9:45:00 47.1 54.1 41.1 10:00:00 48.8 65.2 40.7 10:15:00 49.1 58.8 41.1 10:30:00 49.3 63.3 41.4 10:45:00 48 53.7 41.8 11:00:00 51.2 65.9 41.9 11:15:00 50.5 57.1 44 11:30:00 52 57.1 45 11:45:00 50.1 57.1 42.2
53.6 CNEL
19 March 2015 Cameron Jeffs Churchside Court LLC 6 Ashdown Place Half Moon Bay, CA 94019 Project: Church Street Construction Subject: Environmental Noise Test Report Dear Cameron: As request by you, we have conducted an environmental noise study at the subject site. We have reviewed the Mitigation Measure MM 4.12acd 1 & 2 excerpts provided by you. It is understood that “the project applicant shall incorporate noise attenuation measures (barriers) into the site plan/subdivision design to reduce noise levels at exterior residential lots to less than 60 dB CNEL”.
PROCEDURE An automated sound level meter (SLM) and data logger were placed on the site at Position 0 to continuously collect data for a 24 hour minimum period. Additional simultaneous measurements were conducted with a second SLM at Positions 1 - 4 for correlation with primary measurements. These additional 15 minute samples were to assess the differentials to Position 0. Refer to the attached Measurement Plan. The SLMs were calibrated prior to the start of measurements. Measurements were made in accordance with FHA standard methodology (attached).
TEST RESULTS The average (Leq), maximum (Lmax) and minimum (Lmin) dBA levels were logged at 15 minute intervals and the CNEL calculated. Refer to the attached spreadsheet. Measured noise levels at Positions 1 -4 were less than measured noise levels at the primary Position 0 during simultaneous 15-minute samples. Position 0 has the highest noise levels tested and represents the worst case for the project site. The CNEL calculated is 53.6 dBA.
Frank Hubach Associates, Inc
4905 Central Ave, Ste 100 Richmond, CA 94804
Acoustics and Vibration Engineering Consultants
Phone Fax Email:
510-528-1505 510-528-1506 [email protected]
Church Street Construction Environmental Noise Test Report 19 March 2015 CONCLUSION All the residential lots on this development site are less than 60 dBA CNEL. There is no noise attenuation measure required.
Very truly yours,
Frank J. Hubach President
reviewed by:
Stephen R.W. Neal Vice President
attached:
Measurement Plan (Measurement Plan.pdf) FHA standard methodology (NoiseMethSTD.pdf) CNEL Data (CNELdata.pdf)
FJH/SN:fjh J:\69101\A\ENoiseReport.wpd
Frank Hubach Associates, Inc
510-528-1505
Pos 0
Pos 2 Pos 3
MEASUREMENT POSITIONS
Pos 1
Pos 4
FHA STANDARD AIRBORNE NOISE METHODOLOGY I. INSTRUMENTS The following instruments are used to conduct airborne noise measurements in the field: (1) Bruel & Kjaer (B&K) 2230 or Larson Davis 820 Precision Sound Level Meter (1) B&K 4155 or Larson Davis 2560 ½-inch Microphone (1) B&K 4230 Acoustic Calibrator or B&K 4220 Pistonphone Calibrator (1) B&K 1625 1/3 - 1/1 Octave Filter Set (1) Marantz PMD660/680 Portable PC Card Recorder, HHB PDR 1000 Professional DAT Recorder, or YMEC Digital Recorder
The following instruments are used in the field or laboratory to analyze airborne noise data: (1) Marantz PMD660/680 Portable PC Card Recorder or HHB PDR 1000 Professional DAT Recorder (1) B&K 2131 or YMEC Digital Frequency Analyzer (1) Personal Computer (PC) (1) Printer
1 Frank Hubach Associates, Inc
510-528-1505
FHA Standard Airborne Noise Methodology
II. PROCEDURE Airborne noise measurements are made at selected locations in accordance with the following methodology: Prior to the measurement session, the Sound Level Meter and the corresponding microphone are assembled and coupled in turn to the acoustic calibrator. The Sound Level Meter is adjusted to match the known calibration level to within +/- 0.2 dB. The resulting calibration signal is recorded on the recorder to allow subsequent alignment of analysis equipment. Noise measurements are made by positioning the Microphone/Sound Level Meter at the desired location and recording the resulting signal on the recorder for subsequent laboratory analysis. In the laboratory, the recorded calibration signal is used to align analysis equipment to within +/- 0.2 dB of the initial calibration level. Overall system accuracy is +/- 2.0 dB from 10 Hz to 12,500 Hz. Airborne noise data is typically analyzed on the Digital Frequency Analyzer for 1/3 or 1/1 octave band levels as desired. The results of analysis are interfaced to a PC and printed as required. Sound Level Meters conform to ANSI (American National Standards Institute) SI-4-71 "Specifications for Type 1 Sound Level Meters".
S:\STD\NOISMETH.STD
2 Frank Hubach Associates, Inc
510-528-1505
320 Church St. FHA # 691-01A Position 0 Date 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15 09Mar 15
Time Leq Lmax Lmin 12:00:00 57.3 63.5 51.1 12:15:00 54 60 51.1 12:30:00 54.6 59.7 50.8 12:45:00 53 64.9 50.6 13:00:00 51.6 60.2 49.5 13:15:00 51.4 56.9 49.4 13:30:00 48 53.9 42.3 13:45:00 51.1 59.7 44 14:00:00 51 61.2 43 14:15:00 49.1 60.8 42.7 14:30:00 50.4 61.7 44.4 14:45:00 52.3 60.3 45.3 15:00:00 53.1 62.8 46.4 15:15:00 52 61 44.7 15:30:00 51 60.9 43.8 15:45:00 51.5 57.8 44.8 16:00:00 52.9 61.8 44.9 16:15:00 53.6 61.8 46.1 16:30:00 54 66.6 46.1 16:45:00 53.4 60.4 45.4 17:00:00 53.7 62.9 46.2 17:15:00 55.7 70.7 47.4 17:30:00 54.4 63.5 45.9 17:45:00 53.5 64.7 46.7 18:00:00 53.5 60.2 46.7 18:15:00 53.2 67.1 45.2 18:30:00 49.9 55.7 43 18:45:00 49.1 62.7 40.9 19:00:00 49.7 56 42.5 19:15:00 49.1 55.6 43.4 19:30:00 47.6 56.6 40 19:45:00 46.9 53 40 20:00:00 46.7 55.1 37.9 20:15:00 47.8 54.6 40.9 20:30:00 49.7 61.4 41.4 20:45:00 48.1 55.2 41.2 21:00:00 47.8 60.5 39.6 21:15:00 47.6 61.4 40.5 21:30:00 48.6 60.4 39.5 21:45:00 47 55.2 40.2 22:00:00 45.6 54.3 37.2 22:15:00 43.5 55.1 36.2 22:30:00 43.8 52 35.4 22:45:00 41.7 52 34.5 23:00:00 42.9 52 33.1 23:15:00 41.5 52.5 30.6 23:30:00 41.2 51.6 30.6 23:45:00 40.2 53.8 30.1
Date 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15 10Mar 15
Time Leq Lmax Lmin 0:00:00 37.4 45.2 30.8 0:15:00 36.4 44.3 30.1 0:30:00 37.9 51.9 29.1 0:45:00 41.5 54.8 30.6 1:00:00 41 52.2 32.1 1:15:00 37.6 48.2 31.3 1:30:00 38.6 50.3 31.4 1:45:00 38.2 50.6 30.7 2:00:00 38.8 52.1 30.8 2:15:00 40.5 54.9 31.4 2:30:00 37.4 50.1 30.9 2:45:00 41.7 51.2 33 3:00:00 41.2 53.5 33.9 3:15:00 41.9 55.3 33.9 3:30:00 37.7 51.2 29.8 3:45:00 40.9 56.3 30.9 4:00:00 38.5 52.8 31.7 4:15:00 38.8 46.9 31.5 4:30:00 43.5 56.8 33.5 4:45:00 44 56.9 33.5 5:00:00 47.5 58.4 37.8 5:15:00 48.3 62.9 38.5 5:30:00 48.6 60.2 41.8 5:45:00 49.3 60.3 42.4 6:00:00 50.6 60.4 43.7 6:15:00 52.2 68.3 43.8 6:30:00 49 54.1 42.9 6:45:00 50.8 65.6 43.5 7:00:00 52.2 60.5 46.1 7:15:00 51.9 57.7 46.3 7:30:00 52.7 59.9 45.5 7:45:00 52.6 64 45.6 8:00:00 54.2 59.2 47.8 8:15:00 52.6 59.9 45.3 8:30:00 53 59.3 46.2 8:45:00 52.6 57.4 45.7 9:00:00 51.9 59.8 44.2 9:15:00 50.5 59.9 44.3 9:30:00 49.6 59.5 43.6 9:45:00 47.1 54.1 41.1 10:00:00 48.8 65.2 40.7 10:15:00 49.1 58.8 41.1 10:30:00 49.3 63.3 41.4 10:45:00 48 53.7 41.8 11:00:00 51.2 65.9 41.9 11:15:00 50.5 57.1 44 11:30:00 52 57.1 45 11:45:00 50.1 57.1 42.2
53.6 CNEL
