B-Permit Erosion Control Notes

Revised on 07-21-2020

 

Temporary Erosion Control measures effective during the rainy season (October 1 to April 15).

  1. TEMPORARY EROSION CONTROL DEVICES SHOWN ON THE WWECP WHICH INTERFERE WITH THE WORK SHALL BE RELOCATED OR MODIFIED AS AND WHEN THE INSPECTOR SO DIRECTS AS THE WORK PROGRESSES TO MEET “AS GRADED” CONDITIONS.
  2. ALL LOOSE SOIL AND DEBRIS SHALL BE REMOVED FROM THE STREET AREAS UPON STARTING OPERATIONS AND PERIODICALLY THEREAFTER AS DIRECTED BY THE INSPECTOR.
  3. WHEN DIRECTED BY THE INSPECTOR, A 12-INCH BERM SHALL BE MAINTAINED ALONG THE TOP OF THE SLOPE OF THOSE FILLS ON WHICH GRADING IS NOT IN PROGRESS.
  4. PROVIDE VELOCITY CHECK DAMS ACROSS THE OUTLET OF ALL LOTS DRAINING INTO THE STREET.
  5. ALL FILLS SHALL BE GRADED TO PROMOTE DRAINAGE AWAY FROM THE EDGES OF THE FILL.
  6. ALL UTILITY TRENCHES SHALL BE BLOCKED AT THE PRESCRIBED INTERVALS FROM THE BOTTOM TO TOP WITH A DOUBLE ROW OF SANDBAGS PRIOR TO BACKFILL. STORM AND SEWER TRENCHES SHALL BE BLOCKED AT THE PRESCRIBED INTERVALS WITH A DOUBLE ROW OF SANDBAGS EXTENDING UPWARD, TO WITHIN TWO SANDBAGS FROM THE GRADED SURFACE OF THE STREET. SANDBAGS ARE TO BE PLACED WITH ALTERNATE HEADER AND STRETCHER COURSES. THE INTERVALS PRESCRIBED BETWEEN SANDBAG BLOCKING SHALL DEPEND ON THE SLOPE OF THE GROUND SURFACE, BUT NOT TO EXCEED THE FOLLOWING: 
GRADE OF STREET INTERVAL
LESS THAN 2% AS REQUIRED
2% TO 4% 100 FEET
4% TO 10% 50 FEET
OVER 10% 25 FEET


https://engpermits.lacity.org/bpermits/bdocs/plan_check/EROSION_CONTROL_notes.pdf