Significant Impact Being Mitigated |
Mitigation Measure |
Responsibility for Implementation |
Enforcement Responsibility |
Monitoring Responsibility/ Frequency |
Actions Indicating Compliance |
Noise and Vibration (cont.) |
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Exposure of |
4.J-2c: All development sites requiring pile driving |
A minimum of two weeks |
City of Brisbane Building |
Prior to issuing any |
Issuance of building |
underground utilities to vibration from pile driving operations. DSP, DSP-V, CPP, & CPP-V scenarios |
shall have underground utility2 surveys completed before a building permit is issued to demonstrate that pile driving will be located a minimum 15 feet from buried utilities. Underground utilities surveys shall be submitted to the City for review and consultation with affected utilities a minimum of two weeks prior to commencement of construction activities. If underground utilities are identified within 15 feet of proposed pile driving activities, alternative pile installation methods shall be required. Alternative methods may include use of sonic drivers or drilled and cast-in-place piles. All pile driving shall be designed so as to result in peak particle velocity of less than 4.0 in/sec (100 mm/s) at the location of underground utilities. |
prior to commencement of construction activities, applicant(s) for development requiring pile driving shall submit to the City an underground utility survey to demonstrate that pile driving will be located a minimum 15 feet from buried utilities. Within one week following completion of pile driving activities, the pile driving contractor shall submit to the City a post-construction |
Official |
building permit(s) for development requiring pile driving, the City Building Official shall confirm that such pile driving will be conducted a minimum of 15 feet away from all underground utilities. Should such proposed pile driving be proposed within 15 feet of an underground utility line, alternative pile installation methods shall be required. The City Building Official |
permit(s) for pile driving in compliance with Mitigation Measure 4.J-2c. |
Within one week following completion of pile driving activities, a post-construction assessment of all underground utilities within 30 feet of the pile driving activity shall be submitted to the City by the contractor, confirming that no damage to any underground utilities occurred as the result of the pile driving activity. Should the post-construction assessment determine that underground utilities were damaged by pile driving |
assessment of all underground utilities within 30 feet of the pile driving activity, confirming that no damage to any underground utilities occurred as the result of the pile driving activity. |
shall also be responsible for ensuring that pile- driving activities are designed so as to result in peak particle velocity of less than 4.0 in/sec (100 mm/s) at the location of underground utilities. |
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activities, such damage shall be repaired by the contractor to the satisfaction of the City and affected utility. |
Should the post- construction assessment determine that underground |
The City Building Official shall review the required post-construction |
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utilities were damaged by |
assessment and |
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pile driving activities, such |
coordinate with affecting |
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damage shall be repaired |
utilities to determine |
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by the contractor to the |
whether any damage has |
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satisfaction of the City and |
occurred that required |
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affected utility. |
repair. Should the City |
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Building Official determine |
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that underground utilities |
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were damaged by pile |
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driving activities, the |
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