2011-09-09_REVISION - M1981185 (40)

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XS IIN G )t'ANAG S :1: NS U _ AN.) REPAIRED AS NEEDED, AND EXISTING PIPES TO BE CLEANED OUT TO REMOVE ALL SILT AND DEBRIS. 2. EXISTING GRADE CONTOUR INTERVALS SHOWN AT 1 FOOT. 3. PROPOSED GRADE CONTOUR INTERVALS SHOWN AT 1 FOOT. 4. IF ANY EXISTING STRUCTURES TO REMAIN ARE DAMAGED DURING CONSTRUCTION IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO REPAIR AND /OR REPLACE THE EXISTING STRUCTURE AS NECESSARY TO RETURN IT TO EXISTING CONDITIONS OR BETTER. 5. TOPOGRAPHIC INFORMATION SHOWN IS FROM A TOPOGRAPHIC SURVEY PREPARED BY LAND SURVEYORS. IF THE CONTRACTOR DOES NOT ACCEPT EXISTING TOPOGRAPHY AS SHOWN ON THE PLANS, WITHOUT EXCEPTION, THEN THE CONTRACTOR SHALL SUPPLY, AT THEIR EXPENSE, A TOPOGRAPHIC SURVEY BY A REGISTERED LAND SURVEYOR TO THE OWNER FOR REVIEW. 6. CONSTRUCTION SHALL COMPLY WITH ALL APPLICABLE GOVERNING CODES AND BE CONSTRUCTED TO SAME. 7. UNLESS OTHERWISE SHOWN, NO PROPOSED SLOPE SHALL EXCEED ONE (1.0) HORIZONTAL TO ONE (1) VERTICAL. ALL SLOPED AREAS MUST BE PROTECTED FROM EROSION. 8. THE CONTRACTOR IS RESPONSIBLE FOR CALCULATING HIS OWN ESTIMATE OF EARTHWORK QUANTITIES. 1. THE OWNER, SITE DEVELOPER, CONTRACTOR AND /OR THEIR AUTHORIZED AGENTS SHALL REMOVE ALL SEDIMENT, MUD, CONSTRUCTION DEBRIS, OR OTHER POTENTIAL POLLUTANTS THAT MAY HAVE BEEN DISCHARGED TO OR, ACCUMULATE IN, THE FLOWLINES, STORM DRAINAGE APPURTENANCES, AND PUBLIC RIGHTS OF WAYS AS A RESULT OF CONSTRUCTION ACTIVITIES ASOCIATED WITH THIS CONSTRUCTION PROJECT. SAID REMOVAL SHALL BE CONDUCTED IN A TIMELY MANNER. 2. UNDERSTAND THAT ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES MAY BE REQUIRED OF THE 'OWNER AND HIS OR HER AGENTS DUE TO UNFORESEEN EROSION PROBLEMS OR IF THE SUBMITTED PLAN DOES NOT FUNCTION 'AS INTENDED. THE REQUIREMENTS OF THIS PLAN SHALL BE THE OBLIGATION OF THE LAND OWNER AND /OR HIS SUCCESSORS OR HEIRS; UNTIL SUCH TIME AS THE PLAN IS PROPERLY COMPLETED, MODIFIED, OR VOIDED. 3. THE CONTRACTOR SHALL PREVENT SEDIMENT, DEBRIS AND ALL OTHER POLLUTANTS FROM ENTERING THE STORM SEWER SYSTEM DURING ALL DEMOLITION, EXCAVATION, TRENCHING, BORING, GRADING, OR OTHER CONSTRUCTION OPERATIONS THAT ARE PART OF THIS PROJECT. THE CONTRACTOR SHALL BE HELD RESPONSIBLE FOR REMEDIATION OF ANY ADVERSE IMPACTS TO ADJACENT WATERWAYS, WETLANDS, ETC., RESULTING FROM WORK DONE AS PART OF THIS PROJECT. 4. A LAYER OF SUITABLE MULCH SHALL BE APPLIED TO ALL DISTURBED PORTIONS OF THE SITE WITHIN FOURTEEN (14) DAYS OF THE COMPLETION OF GRADING. SAID MULCH SHALL BE APPLIED AT A RATE OF TWO (2) TONS PER ACRE AND SHALL BE TACKED OR FASTENED BY AN APPROVED METHOD SUITABLE FOR THE TYPE OF MULCH USED. ROUGH —CUT ROADS SHALL BE MULCHED UNLESS A LAYER OF AGGREGATE ROAD BASE IS TO BE APPLIED TO ROUGH —CUT ROADS WITHIN THE 14 DAY PERIOD AFTER COMPLETION OF GRADING. 5. THE CONTRACTOR SHALL LOCATE, INSTALL, AND MAINTAIN ALL EROSION CONTROL AND WATER QUALITY BEST MANAGEMENT PRACTICES AS INDICATED ON SHEET C4.20 THRU C4.23, EROSION CONTROL PLANS. 6. THE GENERAL CONTRACTOR, GRADING CONTRACTOR AND /OR THEIR AUTHORIZED AGENTS SHALL INSURE THAT ALL LOADS OF CUT AND FILL MATERIAL IMPORTED TO OR EXPORTED FROM THIS SITE SHALL BE PROPERLY COVERED TO PREVENT LOSS OF THE MATERIAL DURING TRANSPORT ON PUBLIC RIGHTS OF WAYS. 7. THE USE OF STEEL STAKES OR STEEL FENCE POSTS TO STAKE DOWN STRAW WATTLES OR TO SUPPORT SILT' FENCING USED AS AN EROSION CONTROL MEASURE IS PROHIBITED. 8. SOILS THAT WILL BE STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE PROTECTED FROM WIND AND WATER EROSION WITHIN FOURTEEN (14) DAYS OF STOCKPILE CONSTRUCTION. STABILIZATION AND PROTECTION OF THE STOCKPILE MAY BE ACCOMPLISHED BY ANY OF THE FOLLOWING: MULCHING, TEMPORARY /PERMANENT REVEGITATION OPERATIONS, CHEMICAL SOIL STABILIZER APPLICATION(REQUIRES WMD APPROVAL), OR EROSION CONTROL MATTING /GEOTEXTILES. IF STOCKPILES ARE LOCATED WITHIN 100 FEET OF A DRAINAGEWAY, ADDITIONAL SEDIMENT CONTROLS SUCH AS TEMPORARY DIKES OR SILT FENCE SHALL BE REQUIRED. A-'' V ) ' JJ UN, )•1N V \ L..„ t MANAGEMENT PRACTICES SHALL BE MAINTAINED GOOD REPAIR FOR THE DURATION OF THIS PROJE MINIMUM, THE CONTRACTOR 1 OR HIS AGENT SHALT AND RETAIN WEEKLY WRITTEN INSPECTION RECOR BMPs AND AFTER SIGNIFICANT PRECIPITATION EVE NECESSARY MAINTENANCE AND REPAIR SHALL BE IN A TIMELY MANNER BUT IN NO CASE MORE TH CALANDER DAYS AFTER THE INSPECTION. HOWEI SWEEPING IS TO BE COMPUTED BY THE CLOSE DAY OR ON AN AS NEEDED BASIS. ACCUMULATI AND DEBRIS SHALL BE REMOVED FROM A BMP N SEDIMENT LEVEL REACHES ONE HALF THE HEIGHT BMP OR, AT ANY TIME THAT SEDIMENT OR DEBRI IMPACTS THE FUNCTIONING PF THE BMP. 10. MODIFICATION OF AN ACTIV CONSTRUCTION ACT STORMWATER DISCHARGE PERMIT BY THE CONTRd THEIR AUTHORIZED AGENTS `SHALL REQUIRE TIME! NOTIFICATION. DISCHARGE PERMITS EXPIRE IF C( HAS NOT COMMENCED WITHIN 12 MONTHS OF TH! ACCEPTANCE OF THE MANAGEMENT PLAN.