LABORATORY REPORT
ENVIRONMENTAL TESTING LABORATORY
Jl. Laboratorium Lingkungan No. 123, Jakarta
Phone: (021) 555-1234, Email: info@env-lab.co.id
ACCREDITED KAN: LP-001-IDN
ENVIRONMENTAL NOISE MEASUREMENT REPORT
REPORT NUMBER: LHU/BISING/06/2024/003
Based on PMK RI No.2 Tahun 2023
1. CLIENT INFORMATION
| Client Name | PT. Industri Manufaktur Terpadu |
| Address | Jl. Kawasan Industri Blok C5, Karawang, Jawa Barat |
| Contact Person | Ir. Budi Pratama (Environmental Manager) |
| Request Number | REQ/2024/06/005 |
2. MEASUREMENT INFORMATION
| Measurement Date | June 10, 2024 |
| Measurement Time | 08:00 - 17:00 WIB |
| Measurement Officers | Agus Setiawan (Sampling Officer), Dina Wijaya (Technical Analyst) |
| Weather Condition | Sunny, 30°C, Humidity 65%, Wind speed 1.5 m/s |
3. NOISE QUALITY STANDARDS
According to PMK RI No.2 Tahun 2023, noise level standards are as follows:
| Area | Noise Level Standard | Time Unit |
|---|---|---|
| Residential Areas | 55 dB(A) | Leq 24 hours |
| Commercial and Office Areas | 70 dB(A) | Leq 24 hours |
| Industrial Areas | 70 dB(A) | Leq 24 hours |
| Schools and Educational Institutions | 55 dB(A) | Leq during school hours |
| Hospitals and Health Facilities | 55 dB(A) | Leq 24 hours |
| Places of Worship | 55 dB(A) | Leq during worship times |
Note: Leq = Equivalent Continuous Sound Level
4. MEASUREMENT RESULTS
| No. | Sampling Location | Area Description | Area Type | Noise Level dB(A) | Leq 24 hour dB(A) |
Standard dB(A) |
Compliance Status | ||
|---|---|---|---|---|---|---|---|---|---|
| Daytime (Ld) |
Evening (Le) |
Night (Ln) |
|||||||
| 1 | NL-1 | Main Factory Entrance | Industrial | 67.8 | 65.2 | 62.1 | 66.3 | 70.0 | COMPLY |
| 2 | NL-2 | Production Building | Industrial | 73.4 | 72.1 | 68.5 | 72.2 | 70.0 | NOT COMPLY |
| 3 | NL-3 | Office Building | Commercial | 64.5 | 62.3 | 58.7 | 63.2 | 70.0 | COMPLY |
| 4 | NL-4 | Facility Boundary (East) | Industrial | 68.9 | 67.2 | 65.6 | 67.8 | 70.0 | COMPLY |
| 5 | NL-5 | Power Generator Area | Industrial | 78.6 | 77.5 | 76.3 | 77.9 | 70.0 | NOT COMPLY |
| 6 | NL-6 | Nearest Residential Area | Residential | 57.3 | 55.6 | 52.1 | 55.9 | 55.0 | NOT COMPLY |
Notes:
- Daytime (Ld): 06:00 - 18:00
- Evening (Le): 18:00 - 22:00
- Night (Ln): 22:00 - 06:00
- Leq 24 hour calculation: Leq = 10 × log [1/24 × (12 × 10Ld/10 + 4 × 10Le/10 + 8 × 10Ln/10)]
[Noise Level Distribution Chart - This would display a bar graph comparing measured noise levels against standards for each location]
5. MEASUREMENT METHOD
| Parameter | Method | Equipment | Calibration Status |
|---|---|---|---|
| Noise Level | SNI 7231:2009 | Sound Level Meter Type 1 - RION NL-52 SN:12345678 | Valid until August 15, 2024 |
| Acoustic Calibrator | ANSI/ASA S1.40-2006 | Calibrator RION NC-74 SN:87654321 | Valid until August 15, 2024 |
| Weather Parameters | In-situ measurement | Weather Station Kestrel 5500 SN:KW123456 | Valid until October 10, 2024 |
6. NOISE SOURCES AND CHARACTERISTICS
| Location ID | Major Noise Sources | Noise Characteristics | Distance to Nearest Receptor |
|---|---|---|---|
| NL-1 | Vehicle movement, loading/unloading activities | Intermittent | 200 m to office building |
| NL-2 | Production machinery, metal stamping, air compressors | Continuous, impulsive | 150 m to office building |
| NL-3 | HVAC systems, general office activities | Continuous, low frequency | Within receptor area |
| NL-4 | General facility operations, traffic on adjacent road | Intermittent | 100 m to residential area |
| NL-5 | Power generators, cooling systems | Continuous, tonal | 120 m to office building |
| NL-6 | Industrial facility noise, traffic noise | Intermittent, background | Within receptor area |
7. NOTES AND RECOMMENDATIONS
Based on the measurement results, the following findings and recommendations are provided:
- Three measurement locations exceed the noise threshold limits according to PMK RI No.2 Tahun 2023.
- For the Production Building (NL-2) with noise level of 72.2 dB(A) (exceeding the 70.0 dB(A) standard), it is recommended to:
- Install acoustic barriers or enclosures around high-noise machinery
- Implement regular maintenance program to reduce noise from machinery
- Provide hearing protection for workers in this area
- Consider rescheduling noisy operations to reduce night time noise levels
- For the Power Generator Area (NL-5) with noise level of 77.9 dB(A) (significantly exceeding the 70.0 dB(A) standard), it is recommended to:
- Install acoustic enclosures around generators
- Add sound-absorbing materials to walls and ceilings in the generator room
- Install silencers on air intakes and exhausts
- Consider relocating generators further from office areas and property boundaries
- For the Nearest Residential Area (NL-6) with noise level of 55.9 dB(A) (slightly exceeding the 55.0 dB(A) residential standard), it is recommended to:
- Construct a noise barrier or vegetative buffer along property boundary facing residential areas
- Limit night-time operations of noisy equipment
- Develop a noise monitoring program for the residential area boundary
- Establish a community liaison program to address noise concerns
- General recommendations for the facility:
- Develop and implement a comprehensive noise management plan
- Conduct regular noise training for employees
- Establish procedures for maintenance of equipment to minimize noise
- Conduct follow-up measurements after implementing noise control measures
8. REGULATION REFERENCES
This measurement report refers to:
- Peraturan Menteri Kesehatan Republik Indonesia Nomor 2 Tahun 2023 tentang Standar Baku Mutu Kesehatan Lingkungan dan Persyaratan Kesehatan
- SNI 7231:2009 regarding Environmental Noise Measurement Methods
- Keputusan Menteri Lingkungan Hidup No. 48 Tahun 1996 tentang Baku Tingkat Kebisingan
*END OF REPORT*
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