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EROSION CONTROL NOTES
<br />1. THE OWNER, SITE DEVELOPER, CONTRACTOR AND /OR THEIR AUTHORIZED AGENTS SHALL
<br />REMOVE ALL SEDIMENT, MUD, CONSTRUCTION DEBRIS, OR OTHER POTENTIAL POLLUTANTS THAT
<br />MAY HAVE BEEN DISCHARGED TO OR, ACCUMULATE IN, THE FLOWLINES, STORM DRAINAGE
<br />APPURTENANCES, AND PUBLIC RIGHTS OF WAYS AS A RESULT OF CONSTRUCTION ACTIVITIES
<br />ASSOCIATED WITH THIS CONSTRUCTION PROJECT. SAID REMOVAL SHALL BE CONDUCTED IN A
<br />TIMELY MANNER.
<br />2. UNDERSTAND THAT ADDITIONAL EROSION AND SEDIMENT CONTROL MEASURES MAY BE REQUIRED
<br />OF THE OWNER AND HIS OR HER AGENTS DUE TO UNFORESEEN EROSION PROBLEMS OR IF THE
<br />SUBMITTED PLAN DOES NOT FUNCTION AS INTENDED. THE REQUIREMENTS OF THIS PLAN
<br />SHALL BE THE OBLIGATION OF THE LAND OWNER AND /OR HIS SUCCESSORS OR HEIRS; UNTIL
<br />SUCH TIME AS THE PLAN IS PROPERLY COMPLETED, MODIFIED, OR VOIDED.
<br />3. THE CONTRACTOR SHALL PREVENT SEDIMENT, DEBRIS AND ALL OTHER POLLUTANTS FROM
<br />ENTERING THE STORM SEWER SYSTEM DURING ALL DEMOLITION, EXCAVATION, TRENCHING,
<br />BORING, GRADING, OR OTHER CONSTRUCTION OPERATIONS THAT ARE PART OF THIS PROJECT.
<br />THE CONTRACTOR SHALL BE HELD RESPONSIBLE FOR REMEDIATION OF ANY ADVERSE IMPACTS
<br />TO ADJACENT WATERWAYS, WETLANDS, ETC., RESULTING FROM WORK DONE AS PART OF THIS
<br />PROJECT.
<br />4. A LAYER OF SUITABLE MULCH SHALL BE APPLIED TO ALL DISTURBED PORTIONS OF THE SITE
<br />WITHIN FOURTEEN (14) DAYS OF THE COMPLETION OF GRADING. SAID MULCH SHALL BE
<br />APPLIED AT A RATE OF TWO (2) TONS PER ACRE AND SHALL BE TACKED OR FASTENED BY
<br />AN APPROVED METHOD SUITABLE FOR THE TYPE OF MULCH USED. ROUGH -CUT ROADS SHALL
<br />BE MULCHED UNLESS A LAYER OF AGGREGATE ROAD BASE IS TO BE APPLIED TO ROUGH -CUT
<br />ROADS WITHIN THE 14 DAY PERIOD AFTER COMPLETION OF GRADING.
<br />5. THE CONTRACTOR SHALL LOCATE, INSTALL, AND MAINTAIN ALL EROSION CONTROL AND WATER
<br />QUALITY BEST MANAGEMENT PRACTICES AS INDICATED ON SHEET C4.20 AND C4.21, EROSION
<br />CONTROL PLANS.
<br />6. THE GENERAL CONTRACTOR, GRADING CONTRACTOR AND /OR THEIR AUTHORIZED AGENTS SHALL
<br />INSURE THAT ALL LOADS OF CUT AND FILL MATERIAL IMPORTED TO OR EXPORTED FROM THIS
<br />SITE SHALL BE PROPERLY COVERED TO PREVENT LOSS OF THE MATERIAL DURING TRANSPORT
<br />ON PUBLIC RIGHTS OF WAYS.
<br />7. THE USE OF STEEL STAKES OR STEEL FENCE POSTS TO STAKE DOWN STRAW WATTLES OR TO
<br />SUPPORT SILT FENCING USED AS AN EROSION CONTROL MEASURE IS PROHIBITED.
<br />8. SOILS THAT WILL BE STOCKPILED FOR MORE THAN THIRTY (30) DAYS SHALL BE PROTECTED
<br />FROM WIND AND WATER EROSION WITHIN FOURTEEN (14) DAYS OF STOCKPILE CONSTRUCTION.
<br />STABILIZATION AND PROTECTION OF THE STOCKPILE MAY BE ACCOMPLISHED BY ANY OF THE
<br />FOLLOWING: MULCHING, TEMPORARY /PERMANENT REVEGITATION OPERATIONS, CHEMICAL SOIL
<br />STABILIZER APPLICATION(REQUIRES WMD APPROVAL), OR EROSION CONTROL
<br />MATTING /GEOTEXTILES. IF STOCKPILES ARE LOCATED WITHIN 100 FEET OF A DRAINAGEWAY,
<br />ADDITIONAL SEDIMENT CONTROLS SUCH AS TEMPORARY DIKES OR SILT FENCE SHALL BE
<br />REQUIRED.
<br />9. APPROVED EROSION AND SEDIMENT CONTROL BEST MANAGEMENT PRACTICES SHALL BE
<br />MAINTAINED AND KEPT IN GOOD REPAIR FOR THE DURATION OF THIS PROJECT. AT A MINIMUM,
<br />THE CONTRACTOR OR HIS AGENT SHALL PRODUCE AND RETAIN BI- WEEKLY WRITTEN INSPECTION
<br />RECORDS FOR ALL BMPs AND AFTER SIGNIFICANT PRECIPITATION EVENTS. ALL NECESSARY
<br />MAINTENANCE AND REPAIR SHALL BE COMPLETED IN A TIMELY MANNER BUT IN NO CASE MORE
<br />THAN SEVEN(7) CALENDAR DAYS AFTER THE INSPECTION. HOWEVER, STREET SWEEPING IS TO
<br />BE COMPLETED BY THE CLOSE OF BUSINESS DAY OR ON AN AS NEEDED BASIS.
<br />ACCUMULATED SEDIMENT AND DEBRIS SHALL BE REMOVED FROM A BMP WHEN THE SEDIMENT
<br />LEVEL REACHES ONE THIRD THE HEIGHT OF THE BMP OR, AT ANY TIME THAT SEDIMENT OR
<br />DEBRIS ADVERSELY IMPACTS THE FUNCTIONING OF THE BMP.
<br />10. MODIFICATION OF AN ACTIVE CONSTRUCTION ACTIVITIES STORMWATER DISCHARGE PERMIT BY
<br />THE CONTRACTOR OR THEIR AUTHORIZED AGENTS SHALL REQUIRE TIMELY NOTIFICATION.
<br />DISCHARGE PERMITS EXPIRE IF CONSTRUCTION HAS NOT COMMENCED WITHIN 12 MONTHS OF
<br />THE ACCEPTANCE OF THE MANAGEMENT PLAN.
<br />GRADING NOTES
<br />1. EXISTING DRAINAGE STRUCTURES TO BE INSPECTED AND REPAIRED AS NEEDED, AND EXISTING
<br />PIPES TO BE CLEANED OUT TO REMOVE ALL SILT AND DEBRIS.
<br />2. EXISTING GRADE CONTOUR INTERVALS SHOWN AT 2 FOOT.
<br />3. PROPOSED GRADE CONTOUR INTERVALS SHOWN AT 2 FOOT.
<br />4. IF ANY EXISTING STRUCTURES TO REMAIN ARE DAMAGED DURING CONSTRUCTION IT SHALL BE
<br />THE CONTRACTORS RESPONSIBILITY TO REPAIR AND /OR REPLACE THE EXISTING STRUCTURE AS
<br />NECESSARY TO RETURN IT TO EXISTING CONDITIONS OR BETTER.
<br />5. EXISTING TOPOGRAPHIC INFORMATION SHOWN IS FROM A AERIAL TOPOGRAPHIC SURVEY
<br />PREPARED BY LAND SURVEYORS. IF THE CONTRACTOR DOES NOT ACCEPT EXISTING
<br />TOPOGRAPHY AS SHOWN ON THE PLANS, WITHOUT EXCEPTION, THEN THE CONTRACTOR
<br />SHALL SUPPLY, AT THEIR EXPENSE, A TOPOGRAPHIC SURVEY BY A REGISTERED LAND
<br />SURVEYOR TO THE OWNER FOR REVIEW.
<br />6. CONSTRUCTION SHALL COMPLY WITH ALL APPLICABLE GOVERNING CODES AND BE CONSTRUCTED
<br />TO SAME.
<br />7. UNLESS OTHERWISE SHOWN, NO PROPOSED SLOPE SHALL EXCEED ONE (1.0) HORIZONTAL TO
<br />ONE (1) VERTICAL. ALL SLOPED AREAS MUST BE PROTECTED FROM EROSION.
<br />8. THE CONTRACTOR IS RESPONSIBLE FOR CALCULATING HIS OWN ESTIMATE OF EARTHWORK
<br />QUANTITIES.
<br />9. ALL EARTH MOVING AND PLACEMENT OPERATIONS SHALL BE IN CONFORMANCE WITH THE
<br />RECOMMENDATIONS IDENTIFIED IN THE RULE 6.5 GEOTECHNICAL STABILITY REPORT PREPARED
<br />BY J. ERICH RAUBER AND DAVID McLAY, DATED APRIL 2, 2012 FOR THIS PROJECT. THE
<br />CONTRACTOR SHALL HAVE A SIGNED AND SEALED COPY OF SAID REPORT ON THE SITE AT ALL
<br />TIMES.
<br />10. THE CONTRACTOR SHALL ADHERE TO ALL TERMS AND CONDITIONS AS OUTLINED IN THE
<br />GENERAL PERMIT FOR STORM WATER DISCHARGE ASSOCIATED WITH CONSTRUCTION ACTIVITIES.
<br />STORM SEWER NOTES
<br />1. STORM SEWER PIPE SHALL BE CORRIGATED METAL PIPE (CMP), AS SHOWN ON THE PLAN. ANY
<br />OTHER PIPE SUBSTITUTIONS WILL REQUIRE PRIOR APPROVAL OF THE ENGINEER.
<br />2. LENGTHS OF PIPE SHOWN ARE FROM CENTERLINE TO CENTERLINE OF MANHOLES OR INLETS.
<br />THEREFORE, LENGTHS SHOWN ARE APPROXIMATE.
<br />3. INLETS AND MANHOLES SHALL BE IN ACCORDANCE WITH THE DETAIL DRAWINGS.
<br />4. CONTRACTOR 'SHALL VERIFY HORIZONTAL AND VERTICAL LOCATIONS OF PROPOSED STORM SEWER
<br />POINTS OF CONNECTIONS PRIOR TO CONSTRUCTION OF ANY PROPOSED STORM SEWER.
<br />5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE FOLLOWING:
<br />(A) OBTAINING; ALL REQUIRED PERMITS FROM THE COUNTY OR REGULATORY AUTHORITIES AT THE
<br />CONTRACTOR'S COST INCLUDING PERMITS REQUIRED FOR WORK WITHIN THE PUBLIC RIGHT -OF -WAY,
<br />(B)
<br />RESTORATION
<br />OF
<br />ANY EXISTING
<br />IMPROVEMENTS INCLUDING
<br />(BUT NOT LIMITED
<br />TO)
<br />FENCES.
<br />(C)
<br />VERIFICATIION
<br />AND
<br />PROTECTION
<br />OF ALL EXISTING UTILITIES
<br />WITHIN THE LIMITS
<br />OF
<br />CONSTRUCTION
<br />(D) PROVIDING; STORM SEWER AS- BUILTS TO THE ENGINEER INCLUDING DIMENSIONS, PIPE SIZES, LINES,
<br />AND GRADE OF ALL DRAINAGE APPURTENANCES; INCLUDING BUT NOT LIMITED TO, MANHOLES,
<br />JUNCTIONS, HEADWALLS, AND DRAINS.
<br />6. RIM ELEVATIONS SHOWN ARE APPROXIMATE ONLY AND ARE NOT TO BE TAKEN AS FINAL ELEVATION.
<br />PIPELINE CONTRACTOR SHALL USE PRE CAST CONCRETE ADJUSTMENT RINGS, GROUT, AND STEEL
<br />SHIMS TO ADJUST THE MANHOLE FRAME TO THE REQUIRED FINAL GRADE.
<br />7. COMPACTION OF ALL TRENCHES WITHIN THE PROJECT SITE MUST BE ATTAINED AND COMPACTION
<br />RESULTS SUBMITTED TO THE ENGINEER PRIOR TO FINAL ACCEPTANCE. COMPACTION OF ALL TRENCHES
<br />WITHIN THE PROJECT SHALL BE IN ACCORDANCE WITH AND IN COMPLIANCE WITH THE RULE 6.5
<br />GEOTECHNICAL STABILITY REPORT.
<br />8. ALL STORM PIPE ENTERING STRUCTURES SHALL BE GROUTED TO ASSURE CONNECTION AT STRUCTURE
<br />IS WATERTIGHT.
<br />9. THE CONTRACTOR SHALL PROVIDE ALL MATERIALS NECESSARY FOR CONSTRUCTION OR INSTALLATION OF
<br />ALL PROPOSED STORM SEWER IMPROVEMENTS SHOWN.
<br />RECEIVED
<br />APR 10 2012
<br />GRAND JLWCT10NfIELD OFFICE
<br />RECLAMAT ON MINING & SAFETY
<br />APR 232012
<br />Division of Reclamation,
<br />Mining & Safety
<br />CLC ASSOCIATES
<br />0400 E. ORCHARD RD.
<br />SUITE 2000
<br />GREENWOOD VILLAGE
<br />COLORADO SOIII
<br />P 303 770 5600
<br />F 303 770 2349
<br />CLCASSOC.COM
<br />ARCHITECTURE
<br />ENGINEERING PLANNING
<br />LANDSCAPE ARCHITECTURE
<br />LAND SURVEYING
<br />PREPARED UNDER THE
<br />DIRECT SUPERVISION OF
<br />DANIEL 0. MAORUGA
<br />COLORADO REGISTRATION
<br />NO. 36834 FOR AND
<br />ON BEHALF OF
<br />CLC ASSOCIATES, INC.
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