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N DRAINAGE PLAN NEW DETACHED ADU 2039 N VICTORIA DR UNIT #2 SANTA ANA, CA, 92706 24-1055 9/13/2024 1/8" = 1'-0" A103 Jeffrey Schaefer, P.E. (562) 850-1223 License Number - C91734 Expiration Date - Dec 31, 2026 3325 E 4th St. Long Beach, CA 90814 PROPERTY LINE PROPERTY LINE PR O P E R T Y L I N E PR O P E R T Y L I N E 200' 90 ' VI C T O R I A D R 5' EXISTING MAIN DWELLING (2996 SF) NOT IN PROJECT SCOPE EXISTING GARAGE (660 SF) NOT IN PROJECT SCOPE NEW 998-SF SINGLE-STORY ADU3' - 6 " 39 ' 34'57'67' 20 ' 26 ' FEMA FLOOD MAP SITE DRAINAGE FLOW LINES 142' 142'138' 138' STORM WATER POLLUTION PLAN NOTES: 1. IN CASE OF EMERGENCY, CALL: TBD 2. A STAND-BY CREW FOR EMERGENCY WORK SHALL BE AVAILABLE AT ALL TIMES DURING THE RAINY SEASON(OCTOBER 1 TO APRIL 30). NECESSARY MATERIALS SHALL BE AVAILABLE ON SITE AND STOCKPILED AT CONVENIENT LOCATIONS TO FACILITATE RAPID CONSTRUCTION OF EMERGENCY DEVICES WHEN RAIN IS IMMINENT. 3. EROSION CONTROL DEVICES SHOWN ON THIS PLAN MAY BE REMOVED WHEN APPROVED BY GRADING INSPECTOR IF THE GRADING IF THE GRADING OPERATIONS HAS PROGRESSED TO THE POINT '/MERE THEY ARE NO LONGER REQUIRED. 4. GRADING AREAS ADJACENT TO THE SLOPES LOCATED AT THE SITE PERIMETER MUST DRAIN AWAY FROM THE TOP OF SLOPE AT THE CONCLUSION OF EACH WORKING DAY 5.ALL SILT AND DEBRIS SHALL BE REMOVED FROM ALL DEVICES WITHIN 24 HOURS OF EACH RAINSTORM AND BE DISPOSED OF PROPERLY 6. A GUARD SHALL BE POSTED ON THE SITE WHENEVER THE DEPTH OF WATER IN ANY DEVICE EXCEEDS 2'. THE DEVICE SHALL BE DRAINED OR PUMPED DRY WITHIN 24 HOURS AFTER EACH RAINSTORM. 7. EXCEPT AS OTHERWISE APPROVED BY THE GRADING INSPECTOR, ALL REMOVABLE PROTECTIVE DEVICES SHOWN SHALL BE IN PLACE AT THE END OF EACH WORKING DAY OR ON WEEKENDS WHEN THE 5 DAY RAIN PROBABILITY EXCEEDS 40%. 8. ALL LOOSE SOILS AND DEBRIS WHICH MAY CREATE A POTENTIAL HAZARD TO OFF SITE PROPERTY SHALL BE REMOVED FROM THE SITE AS DIRECTED BY THE GRADING INSPECTOR. 9. THE PLACEMENT OF ADDITIONAL DEVICES TO REDUCE EROSION DAMAGE WITH IN THE SITE IS LEFT TO THE DISCRETION OF THE FIELD EXAMINER. 10. DESALTING BASINS MAY NOT BE REMOVED OR MADE INOPERABLE BETWEEN NOVEMBER 1 AND APRIL 15 OF THE FOLLOWING YEAR WITHOUT THE APPROVAL OF THE GRADING INSPECTOR. 11. EROSION CONTROL DEVICES ARE TO BE MODIFIED AS NEEDED AS THE PROJECT PROGRESSES AND PLANS OF THESE CHANGES MUST BE SUBMITTED FOR APPROVAL AS REQUIRED. 12. ADD THE FOLLOWING NOTES (OR SIMILAR) TO THE PLANS TO DEFINE THE CURRENT STATE OF CONSTRUCTIONAL CHANGES.CHANGES MUST BE SUBMITTED FOR APPROVAL AS REQUIRED. A. STORM DRAINS AND CATCH BASINS ARE (NOT) CONSTRUCTED B. STREETS ARE (NOT) PAVED, EXCEPT AS NOTED ON THE EROSION CONTROL PLANS C. DRAINAGE DEVICES ARE (NOT) CONSTRUCTED, EXCEPT AS NOTED ON PLANS. 13. STORM WATER POLLUTION CONTROL REQUIREMENTS MUST BE INTEGRATED INTO THE EROSION CONTROL PLANS PER TITLE 62 SECTION 7010 OF THE COUNTY CODE FOR ANY CONSTRUCTION BETWEEN OCTOBER 1 AND APRIL 15. THE FOLLOWING NOTES AND BMPS AS OUTLINED IN, BUT NOT LIMITED TO, THE BEST MANAGEMENT PRACTICE HANDBOOK, CALIFORNIA STORM WATER QUALITY TASK FORCE, SACRAMENTO CALIFORNIA 1993. OR THE LATEST REVISED EDITION MAY APPLY DURING THE CONSTRUCTION OF THIS PROJECT (ADDITION MEASURES MAYBE REQUIRED IF DEEMED APPROPRIATE BY COUNTY INSPECTORS) ATTACHMENT A NOTES: A. EVERY EFFORT SHOULD BE MADE TO ELIMINATE THE DISCHARGE OF NON STORM WATER FROM THE PROJECT SITE AT ALL TIMES B. ERODED SEDIMENTS AND OTHER POLLINATES MUST BE RETAINED ON-SITE AND MAY NOT BE TRANSPORTED FROM THE SITE VIA SHEET FLOW, SWALES, AREA DRAINS NATURAL DRAINAGE OR COURSES OR WIND. C. STOCKPILE OF EARTH AND OTHER CONSTRUCTION RELATED MATERIALS MUST BE PROTECTED FROM BEING TRANSPORTED FROM THE SITE BY THE FORCES OF WIND OR WATER D. FUELS, OILS SOLVENTS AND OTHER TOXIC MATERIALS MUST BE STORED IN ACCORDANCE W/ THEIR USING AND ARE NOT TO CONTAMINATE THE SOIL AND SURFACE WATERS. ALL APPROVED STORAGE CONTAINER ARE TO BE PROTECTED FROM THE WEATHER SPILLS MUST BE CLEANED UP IMMEDIATELY AND DISPOSED OF IN A PROPER MANNER. SPILLS MAY NOT BE WASHED IN TO THE DRAINAGE SYSTEM. E. EXCESS OR WASTER CONCRETE MAY NOT BE WASHED IN TO THE PUBLIC WAS OR ANY OTHER DRAINAGE SYSTEM. PROVISIONS SHALL BE MADE TO RETAIN CONCRETE WASTES ON SITE UNTIL THEY CAN BE DISPOSED OF AS SOLID WASTE. F.TRASH AND CONSTRUCTION RELATED CONTAMINATION SOUD WASTES MUST BE DEPOSITED IN TO A COVERED RECEPTACLE TO PREVENT CONTAMINATION OF RAINWATER & DISPERSAL BY WIND. G. SEDIMENTS AND OTHER MATERIALS MAY NOT BE TRACKER FROM THE SITE BY VEHICLE TRAFFIC. THE CONSTRUCTION ENTRANCE ROADWAYS MUST BE STABILIZED SO AS TO INHIBIT SEDIMENTS FROM EYING DEPOSITED IN TO THE PUBLIC WAY. ACCIDENTAL DEPOSITIONS MUST BE SWEPT UP IMMEDIATELY AND MAY NOT BE WASHED DOWN BY RAIN/ OTHER MEANS. H. ANY SLOPES WITH DISTURBED SOILS OR DENUDED OF VEGETATION MUST BE STABILIZED SO AS TO NO CAUSE EROSION. NOTES: 1. EXCESS AND WASTE CONCRETE SHALL NOT BE WASHED IN TO THE STREET OR INTO A DRAINAGE SYSTEM. 2. FOR WASH OUT OF CONCRETE AND MORTAR PRODUCTS A DESIGNATED CONTAINMENT FACULTY OF SUFFICIENT CAPACITY TO RETAIN LIQUID AND SOLID WASTE SHALL BE PROVIDED ON SITE. 3. SLURRY FROM CONCRETE AND ASPHALT SAW CUTTING SHALL BE VACUUMED OR CONTAINED, DRIED, PICKED UP AND DISPOSED OF PROPERLY. 4. ALL REMOVABLE VERSIONS PROTECTIVE DEVICES SHALL BE IN PLACE AT THE END OF EACH WORKING DAY WHEN THE 5-DAY PROBABILITY FORECASTS. 5. AFTER A RAINSTORM, ALL SILT AND DEBRIS SHALL BE REMOVED FROM STREET. CHECK BERMS AND BASINS. 6. GRADED AREAS ON THE PERMITTED AREA PERIMETER MUST DRAIN AWAY FROM SLOPS AT THE CONCLUSION OF EACH WORKING DAY. DRAINAGE TO BE DIRECTED TOWARD DESILTING FACULTIES. 7. THE PERMITTEE AND CONTRACTOR SHALL BE RESPONSIBLE AND SHALL TAKE ALL NECESSARY PRECAUTIONS TO PREVENT PUBLIC TRESPASS ONTO AREA WHERE IMPOUNDED WATER CREATED A HAZARDOUS CONDITION. 8. THE UNDERSIGNED CIVIL ENGINEER SHALL INSPECT EROSION CONTROL WORK AND ENSURE THAT THE WORK IS IN ACCORDANCE WITH THE APPROVED PLANS. 9. AT LEAST 2-LAYERS OF SANDBAGS FILLED WITH SAND ARE PA GRAVEL SHALL BE LAID ALONG THE PERIMETER OF THE PROJECT AREA AND SHOWN DURING CONSTRUCTION. GUTTERS ON ROOF EAVE (SLOPE TO SOUTH) GUTTERS ON ROOF EAVE (SLOPE TO WEST) GUTTERS ON ROOF EAVE (SLOPE TO WEST) GUTTERS ON ROOF EAVE (SLOPE TO SOUTH) 2039 N Victoria Drive #24/28/2025