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SEWER GENERAL NOTES
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1. ALL WORK MATERIALS SHALL BE IN CONFORMANCE WITH THE STANDARDS AND SPECIFICATIONS OF
THE CITY OF RENTON UTILITY DEPARTMENT AND THE LATEST EDITION OF THE WSDOT/APWA
STANDARDS AND SPECIFICATIONS.
2. THE HOURS OF WORK IN THE STREET RIGHT OF WAY SHALL BE LIMITED TO 8:30 A.M. TO 3:30 P.M.
ON WEEKDAYS UNLESS OTHERWISE APPROVED IN WRITING BY THE PLANNING/BUILDING/PUBLIC
WORKS DEPARTMENT AT (425) 235-2620. ALL STREET CLOSURES, PARTIAL OR FULL, SHALL BE
APPROVED BY THE PLANNING/BUILDING/PUBLIC WORKS DEPARTMENT 72 HOURS IN ADVANCE. THE
POLICE DEPARTMENT, FIRE DEPARTMENT, AND 911 SHALL BE NOTIFIED 24 HOURS IN ADVANCE OF
ANY WORK IN THE RIGHT OF WAY.
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3. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH "STANDARD SPECIFICATIONS FOR MUNICIPAL
PUBLIC WORKS CONSTRUCTION" PREPARED BY WASHINGTON STATE CHAPTER AMERICAN PUBLIC
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WORKS ASSOCIATION, LATEST EDITION (APWA) AND CITY OF RENTON STANDARD SPECIFICATIONS.
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4. ALL LOCATIONS OF EXISTING UTILITIES SHOWN ARE APPROXIMATE AND IT SHALL BE THE
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CONTRACTOR'S RESPONSIBILITY TO VERIFY THE TRUE AND CORRECT LOCATION SO AS TO AVOID
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DAMAGE OR DISTURBANCE.
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5. A PRECONSTRUCTION CONFERENCE AND A 24 HOUR NOTICE SHALL BE REQUIRED PRIOR TO
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STARTING NEW CONSTRUCTION. IT SHALL BE THE CONTRACTORS RESPONSIBILITY TO SECURE ALL
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NECESSARY PERMITS PRIOR TO STARTING CONSTRUCTION. (INSPECTION WILL BE ACCOMPLISHED BY
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A REPRESENTATIVE OF THE CITY OF RENTON.) IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO
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NOTIFY THE UTILITY DEPARTMENT 24 HOURS IN ADVANCE OF BACKFILLING ALL CONSTRUCTION.
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6. CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS, METHODS AND SEQUENCES OF
CONSTRUCTION AND FOR THE SAFETY OF WORKERS AND OTHERS ON THE CONSTRUCTION SITE.
7. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO OBTAIN STREET USE AND ANY OTHER
RELATED PERMITS PRIOR TO ANY CONSTRUCTION.
8. PLANS APPROVED BY THE CITY OF RENTON, PUBLIC WORKS DEPARTMENT, SHALL TAKE PRECEDENCE
OVER ALL OTHER PLANS.
9. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN
PROGRESS.
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10. THE CONTRACTOR SHALL PROVIDE THE CITY OF RENTON WITH AN AS -BUILT DRAWING OF THE
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SANITARY SEWER SYSTEM WHICH HAS BEEN STAMPED AND SIGNED BY A LICENSED PROFESSIONAL
ENGINEER OR LICENSED PROFESSIONAL SURVEYOR.
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11. BACKFILL SHALL BE PLACED EQUALLY ON BOTH SIDES OF THE PIPE IN LAYERS WITH A LOOSE
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AVERAGE DEPTH OF 6 INCHES, MAXIMUM DEPTH OF 8 INCHES, THOROUGHLY TAMPING EACH LAYER
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TO 95 PERCENT OF MAXIMUM DENSITY. THESE COMPACTED LAYERS MUST EXTEND FOR ONE PIPE
DIAMETER ON EACH SIDE OF THE PIPE OR TO THE SIDE OF THE TRENCH. MATERIALS TO COMPLETE
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THE FILL OVER PIPE SHALL BE THE SAME AS DESCRIBED.
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12. OPEN CUT ROAD CROSSINGS FOR UTILITY TRENCHES ON EXISTING TRAVELED ROADWAY SHALL BE
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BACKFILLED WITH CRUSHED ROCK AND MECHANICALLY COMPACTED. CUTS INTO THE EXISTING
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ASPHALT SHALL BE NEATLINE CUT WITH SAW IN A CONTINUOUS LINE. A TEMPORARY MIX PATCH
MUST BE PLACED IMMEDIATELY AFTER BACKFILL AND COMPACTION. A PERMANENT HOT MIX PATCH
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SHALL BE PLACED WITHIN 10 DAYS AND SHALL BE PER CITY OF RENTON CURRENT STANDARDS.
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13. DATUM SHALL BE CITY OF RENTON, U.S.C. AND G.S.
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14. ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED TO THE
SATISFACTION OF THE DEPARTMENT FOR THE PREVENTION OF ON -SITE EROSION AFTER THE
COMPLETION OF CONSTRUCTION.
15. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN
ACCORDANCE WITH SECTION 7-02.3(1) OF THE CURRENT STATE OF WASHINGTON STANDARD
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SPECIFICATIONS FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVELING
OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND
COMPACTION OF REQUIRED BEDDING MATERIAL TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF
THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE UNYIELDING BASE. PIPE BEDDING SHALL
BE PEA GRAVEL 6" ABOVE AND BELOW THE PIPE.
16. SANITARY SEWER PIPE SHALL BE POLYVINYL CHLORIDE (PVC) RUBBER GASKETED ASTM D 3034,
SDR 35, OR DUCTILE IRON CLASS 50.
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17. IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 6 INCH AND MAXIMUM 18 INCH ABOVE
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FINISHED GRADE. IN PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING.
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STORM DRAINAGE GENERAL NOTES
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1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING
MUST BE HELD WITH THE CITY OF RENTON PLAN REVIEWER.
2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE "1994 STANDARD SPECIFICATIONS FOR
ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION" PREPARED BY W.S.D.O.T., AND THE AMERICAN PUBLIC
WORKS ASSOCIATION (APWA), AS AMENDED BY THE CITY OF RENTON DEPARTMENT OF PUBLIC
WORKS.
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3. THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE APPROVED
PLANS WHICH ARE ON FILE IN THE DEPARTMENT OF PUBLIC WORKS. ANY DEVIATION FROM THE
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APPROVED PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE CITY OF RENTON DEPARTMENT OF
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PUBLIC WORKS OR SURFACE WATER UTILITY.
4. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN
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PROGRESS.
5. DATUM SHALL BE NAVD 88. UNLESS OTHERWISE APPROVED BY CITY OF RENTON DEPARTMENT OF
PUBLIC WORKS. REFERENCE BENCHMARK AND ELEVATION ARE NOTED ON THE PLANS.
6. ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND BUILDING
CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION IS COMPLETED
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AND THE POTENTIAL FOR ON -SITE EROSION HAS PASSED.
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7. ALL RETENTION/DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR TO OR IN
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CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE APPROVED BY THE DEPARTMENT
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OF PUBLIC WORKS, SURFACE WATER UTILITY.
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8. GRASS SEED MAY BE APPLIED BY HYDROSEEDING. THE GRASS SEED MIXTURE, OTHER THAN CITY
OF RENTON APPROVED STANDARD MIXES, SHALL BE SUBMITTED BY A LANDSCAPE ARCHITECT AND
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APPROVED BY THE DEPARTMENT OF PUBLIC WORKS, SURFACE WATER UTILITY.
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9. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN
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ACCORDANCE WITH SECTION 7-02.3(1) OF THE CURRENT STATE OF WASHINGTON STANDARD
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SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY LEVELING
OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL AS WELL AS PLACEMENT AND
COMPACTION OF REQUIRED BEDDING MATERIAL TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF
THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE UNYIELDING BASE. ALL PIPE BEDDING
SHALL BE APWA CLASS "C", WITH THE EXCEPTION OF PVC PIPE. ALL TRENCH BACKFILL SHALL BE
COMPACTED TO MINIMUM 95% FOR PAVEMENT AND STRUCTURAL FILL AND 90% OTHERWISE PER
ASTM D-1557-70. PEA GRAVEL BEDDING SHALL BE 6" OVER AND UNDER P.V.C. PIPE.
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STORM DRAINAGE GENERAL NOTES (CONTINUED)
10. GALVANIZED STEEL PIPE AND ALUMINIZED STEEL PIPE FOR ALL DRAINAGE FACILITIES SHALL HAVE
ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE.
11. STRUCTURES SHALL NOT BE PERMITTED WITHIN 10 FEET OF THE SPRING LINE OF ANY STORM
DRAINAGE PIPE, OR 15 FEET FROM THE TOP OF ANY CHANNEL BANK.
12. ALL CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL.
13. OPEN CUT ROAD CROSSINGS THROUGH EXISTING PUBLIC RIGHT OF WAY WILL NOT BE ALLOWED
UNLESS SPECIFICALLY APPROVED BY THE CITY OF RENTON ADMINISTRATOR, DEPARTMENT OF
PLANNING/BUILDING/PUBLIC WORKS.
14. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF SOUND
QUARRY ROCK PLACED TO A DEPTH OF 1 FOOT AND MUST MEET THE FOLLOWING SPECIFICATIONS:
4"-8"/40%-70% PASSING; 2"-4" ROCK/30%-40% PASSING; AND -2" ROCK/10%-20% PASSING.
15. ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE STORM DRAINAGE
SYSTEM, UNLESS APPROVED BY THE DEPARTMENT OF DEVELOPMENT SERVICES, PLAN REVIEWER OR
SURFACE WATER UTILITY. AN ACCURATELY DIMENSIONED CERTIFIED AS -BUILT DRAWING OF THIS
DRAINAGE SYSTEM WILL BE SUBMITTED TO THE CITY OF RENTON UPON COMPLETION.
16. ISSUANCE OF THE BUILDING OR CONSTRUCTION PERMIT BY THE CITY OF RENTON DOES NOT
RELIEVE THE OWNER OF THE CONTINUING LEGAL OBLIGATION AND/OR LIABILITY CONNECTED WITH
STORM SURFACE WATER DISPOSITION. FURTHER, THE CITY OF RENTON DOES NOT ACCEPT ANY
OBLIGATION FOR THE PROPER FUNCTIONING AND MAINTENANCE OF THE SYSTEM PROVIDED DURING
CONSTRUCTION.
17. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD, SAFETY DEVICES,
PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFT,
HEALTH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE
PERFORMANCE OF WORK COVERED BY THE CONTRACT. ANY WORK WITHIN THE TRAVELED RIGHT OF
WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE AN APPROVED TRAFFIC CONTROL
PLAN BY THE TRAFFIC ENGINEERING DIVISION OF THE DEPARTMENT OF PUBLIC WORKS. ALL
SECTIONS OF THE W.S.D.O.T. STANDARD SPECIFICATIONS 1-07-23, TRAFFIC CONTROL, SHALL APPLY.
18. SPECIAL DRAINAGE MEASURES WILL BE REQUIRED IF THE PROJECT LOCATION IS WITHIN THE AQUIFER
PROTECTION AREA (APA).
TESC NOTES
ALL EROSION CONTROL MEASURES SHALL BE MAINTAINED BY THE CONTRACTOR TO THE
SATISFACTION OF THE CITY'S PUBLIC WORKS INSPECTOR.
1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A
PRE -CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON
DEPARTMENT OF PUBLIC WORKS, DESIGN ENGINEER.
2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED
ON THE PLAN SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING
CONSTRUCTION.
3. ALL REQUIRED :SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE
CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR OTHER
CONSTRUCTION "0 INSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE
NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE
MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING
AND/OR CONSTRUCTION IS COMPLETED AND POTENTIAL FOR ON -SITE EROSION HAS
PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO
EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE
PERMITTEE.
4. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING
ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE
CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL
CONDITIONS DICTATE, THE PERMITTEE SHALL ANTICIPATE THAT MORE EROSION AND
SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO INSURE COMPLETE
SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF
CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE
PERMITTEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY HIS
ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM
REQUIREMENTS, AS MAY BE NEEDED TO PROTECT ADJACENT PROPERTIES AND WATER
QUALITY OF THE RECEIVING DRAINAGE SYSTEM.
5. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT
DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR
LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES.
6. DURING THE TIME PERIOD OF NOVEMBER 1 THROUGH MARCH 31, ALL PROJECT
DISTURBED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT
UNWORKED FOR MORE THAN TWELVE (12) HOURS, SHALL BE COVERED BY MULCH,
SODDING, OR PLASTIC COVERING.
7. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER
WORK IS ANTICIPATED FOR A PERIOD OF 30 DAYS OR MORE, ALL DISTURBED AREAS
MUST BE IMMED ATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER
APPROVED EROE ION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR IN
QUESTION. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE
MONTHS OF APRIL THROUGH SEPTEMBER INCLUSIVE. SEEDING MAY PROCEED,
HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITTEE, BUT MUST BE
AUGMENTED WITH MULCHING, NETTING, OR OTHER TREATMENT APPROVED BY THE
CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD.
8. FOR ALL EROSION/SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE
DEPTH EXCEEDS 6 INCHES, A FENCE, A MINIMUM OF 3 FEET HIGH IS REQUIRED,
WITH 3:1 SIDE SLOPES.
9. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24' X 50' X 8" OF 4- TO 6-
INCH QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS
AND EGRESS TO THE CONSTRUCTION SITE.
PRELIMINARY DESIGN RECOMMENDATION
(AS STATED IN THE 'SUBSURFACE EXPLORATION, GEOLOGIC HAZARD, AND PRELIMINARY GEOTECHNICAL
ENGINEERING REPORT' BY ASSOCIATED EARTH SCIENCES, INC., SECTION 9; DATED DEC. 3, 2004)
SITE PREPARATION OF BUILDING AND PAVEMENT AREAS SHOULD INCLUDE REMOVAL OF ALL EXISTING
BUILDINGS, FOUNDATIONS, EXISTING BURIED UTILITIES, TREES, BRUSH DEBRIS, AND ANY OTHER
DELETERIOUS MATERIALS. IF THE EXISTING STRUCTURES ARE NOT PART OF FUTURE DEVELOPMENT PLANS,
THE STRUCTURES SHOULD BE DEMOLISHED AND ANY REMAINING FOUNDATION ELEMENTS OR BURIED
UTILITIES THAT ARE NOT TO REMAIN OPERATIONAL SHOULD BE REMOVED. ALL EXISTING FILL AROUND
STRUCTURES THAT ARE TO BE DEMOLISHED SHOULD BE REMOVED. COUNTY RECORDS SUGGEST THAT
THE HOUSE ON -SITE IS SERVED BY A SEPTIC SYSTEM. ANY EXISTING SEPTIC SYSTEMS THAT ARE IN
USE OR ABANDONED IN PLACE AND ARE NOT TO BE REUSED SHOULD DECOMMISSIONED IN
ACCORDANCE WITH KING COUNTY HEALTH DEPARTMENT REQUIREMENTS AND REMOVED FROM BENEATH
ANY AREAS WHERE STRUCTURES OR PAVING ARE PLANNED. WE ARE NOT AWARE OF ANY WATER WELLS
ON -SITE; HOWEVER, IF ANY WATER WELLS ARE PRESENT, THEY SHOULD BE DECOMMISSIONED BY A
LICENSED WELL DRILLER IN ACCORDANCE WITH WASHINGTON ADMINISTRATIVE CODE SECTION 173-460. IF
ANY HEATING OIL STORAGE TANKS OR OTHER SIMILAR STRUCTURES ARE PRESENT ON -SITE, THEY
SHOULD BE DECOMMISSIONED AND REMOVED IN ACCORDANCE WITH APPLICABLE WASHINGTON STATE
DEPARTMENT OF ECOLOGY REGULATIONS. ANY DEPRESSIONS BELOW PLANNED FINAL GRADE CAUSED BY
DEMOLITION ACTIVITIES SHOULD BE BACKFILLED WITH STRUCTURAL FILL AS DISCUSSED UNDER THE
STRUCTURAL FILL SECTION (AS STATED ON THE GEOTECHNICAL REPORT DATED DEC. 3, 2004).
THE EXISTING TOPSOIL AND SOD SHOULD BE REMOVED FROM AREAS WHERE NEW BUILDINGS, PAVING,
OR OTHER STRUCTURES ARE PLANNED. THESE MATERIALS WILL "SWELL" SOME 25 TO 30 PERCENT UPON
EXCAVATION. THE ACTUAL OBSERVED IN -PLACE DEPTH OF TOPSOIL AND SOD AT THE EXPLORATION
LOCATIONS IS PRESENTED ON THE EXPLORATION LOGS IN THE APPENDIX. AFTER STRIPPING, REMAINING
ROOTS AND STUMPS SHOULD BE REMOVED FROM STRUCTURAL AREAS. ALL SOILS DISTURBED BY
STRIPPING AND GRUBBING OPERATIONS SHOULD BE RECOMPACTED AS DESCRIBED BELOW FOR
STRUCTURAL FILL.
ONCE EXCAVATION TO SUBGRADE ELEVATION IS COMPLETE, THE RESULTING SURFACE SHOULD BE
PROOF -ROLLED WITH A LOADED DUMP TRUCK OR OTHER SUITABLE EQUIPMENT. ANY SOFT, LOOSE, OR
YIELDING AREAS SHOULD BE EXCAVATED TO EXPOSE SUITABLE BEARING SOILS. THE SUBGRADE SHOULD
THEN BE COMPACTED TO AT LEAST 90 PERCENT OF THE MODIFIED PROCTOR MAXIMUM DRY DENSITY, AS
DETERMINED BY THE ASTM:D-1557 TEST PROCEDURE FOR HOME SITES AND FILL MORE THAN 4 FEET
BELOW PAVING, AND TO 95 OF THE ASTM:D-1557 FOR SUBGRADES LESS THAN 4 FEET BELOW FINAL
GRADE. STRUCTURAL FILL CAN THEN BE PLACED TO ACHIEVE DESIRED GRADES, IF NEEDED.
AFTER INITIAL SITE PREPARATIONS AS RECOMMENDED ABOVE, EXISTING FILL ON -SITE SHOULD BE
ADDRESSED WHEREVER IT IS PRESENT BELOW PLANNED FINISHED GRADE. SIX OF THE EXPLORATION PITS
ENCOUNTERED EXISTING FILL EXTENDING UP TO 8 FEET BELOW EXISTING GRADE. EXISTING FILL SHOULD
BE COMPLETELY REMOVED FROM BENEATH FOUNDATION AREAS AND REPLACED WITH STRUCTURAL FILL
AS NEEDED TO ACHIEVE DESIRED GRADE. WHERE STRUCTURAL FILL MUST BE REMOVED FROM BENEATH
BUILDING FOUNDATION AREAS, EXISTING FILL REMOVAL SHOULD EXTEND OUTSIDE OF THE PLANNED
BUILDING FOOTPRINT BY A DISTANCE EQUAL TO HALF OF THE OVEREXCAVATION DEPTH. BENEATH FLOOR
SLABE AND PAVING AREAS, EXISTING FILL REMOVAL SHOULD EXTEND 2 FEET BELOW PLANNED SUBGRADE
ELEVATION, THEN THE RESULTING SURFACE SHOULD BE PROOF -ROLLED AND COMPACTED AS
RECOMMENDED ABOVE. ANY SOFT, YIELDING, OR ORGANIC AREAS SHOULD BE EXCAVATED FURTHER TO
EXPOSE SUITABLE FIRM AND UNYIELDING SOILS. THE PLANNED GRADE CAN THEN BE RESTORED WITH
STRUCTURAL FILL. WE ESTIMATE THE APPROXIMATELY 75 PERCENT OF THE EXCAVATED MATERIAL WILL BE
ACCEPTABLE FOR REUSE IN STRUCTURAL FILL APPLICATIONS WHEN FIELD CONDITIONS ALLOW
MOISTURE -CONDITIONING BY DRYING DURING FAVORABLE WEATHER. BASED ON LABORATORY TESTING
INCLUDED IN THE APPENDIX, EXISTING FILL SOILS WERE BELOW OPTIMUM MOISTURE CONTENT FOR
COMPACTION PURPOSES AT THE TIME OF EXPLORATION. EXISTING TOPSOIL SHOULD BE EXCLUDED FROM
STRUCTURAL FILL USE. THE CONTRACTOR SHOULD BE MADE AWARE OF THE REQUIREMENT TO EXCAVATE,
MOISTURE -CONDITION, AND REPLACE EXISTING FILL MATERIALS, AND SHOULD INCLUDE THIS WORK IN HIS
COST ESTIMATES. ASL;DKJFASDF
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By:
By:
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By:
RECOMMENDED FOR APPROVAL
Date:
Date:
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to
DATE
12/04/2007
JOB NO.
131-004-07
DWG NO.
C1.1
2 OF 8
R:\Projects\131 (TSA Architects)\004-07 (2nd and Morris)\dwg\sheets\M0-gn01.dwg U.Q-342�o2