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<br /> ��, �{ .�� qw j r � �,�h LEGEND: SITE BOUNDARY N � � 3 � N �
<br /> ��� � UTILITIES-AS SPECIFIED ,�,,,, U � N �� ro
<br /> C� ���� s � (�D - --- STORMWATER � � � �, "
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<br /> �� �__ EXCAVATION AREA 'A' ._ ''
<br /> ` �'�(�,` �✓��� EXCAVATION AREA'B' � U C'°
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<br /> I ��� —�- TEMPORARY FENCE V (f� � �
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<br /> � ��.`i�` ��� — -- ASPHALT CONTAINMENT BERM O �` `n� � E
<br /> / ��►,� �/D —o-- PIPE PILING AS NECESSARY TO '� � Q N
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<br /> ♦ / � �` COMPLETE EXCAVATION (n .�+ � � � � �,
<br /> � `, ' ``���` �--— PIPE PILING-DETAIL SHOP � V � � N ro
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<br /> � `"��` NOTES: � � �
<br /> � �� 1. LOCATION AND DISTANCES SHOWN ARE APPROXIMATE '—
<br /> (� 2. BLACK AND WHITE REPRODUCTION OF THIS COLOR
<br /> / '
<br /> �� J �� � ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO
<br /> �♦� � � INCORRECTINTERPRETATION M
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<br /> � SPECIFICATION3:
<br /> � e EXCAVATION o�`�^'��E Lr�C�
<br /> � ��� 1. EXCAVATE SITE SOIL TO THE LIMITS SHOWN USING A TEMPORARY PIPE PILING � ����`�'���b ,t`!
<br /> � ti ,-�� �. ;
<br /> � � �'��,` : SUPPORT SYSTEM;SEE GEOTECHNICAL REPORT AND STRUCTURAL PLAN � � 1�, � �"
<br /> I �, �+�� 1 SHEETS.CONDUCT EXCAVATIONS IN A SAFE MANNER.STOP WORK IF DIRECTED � �-• 9 '2
<br /> �C � � 0 ��.�!V � �� BY THE ENGINEER. �$�.`
<br /> A'� �� � � �`•�� ' 2. MAINTAIN STRICT IMPACTED ZONE DELINEATION AND CONTROL.CONTRACTOR °x �� �
<br /> r�� sII „�y � `�i�� � IS WHOLLY RESPONSIBLE FOR ANY CLEANUP,ADDITIONAL EXCAVATION,AND � 1Pfi' �t"��O r{,�'
<br /> ��O � ��,� � CONFIRMATION SAMPLING,OR OTHER RAMIFICATIONS CAUSED BY SPREADING '{'�S �15�'� Gti�
<br /> �� IMPACTED MATERIAL AROUND THE SITE OR OFF SITE.ALL LOADS MUST BE SI�NAL��
<br /> � � � �� � COVERED PRIOR TO LEAVING THE SITE.DO NOT USE THE SAME BUCKET THAT I)
<br /> �•.�� WAS USED FOR WASTE EXCAVATION FOR CLEAN BACKFILL UNLESS IT HAS BEEN ������'
<br /> �"' %� DECONTAMINATED AND INSPECTED BY THE ENGINEER.KEEP THE STREET CLEAN.
<br /> �� � �O ``�` ,,�
<br /> O REMOVE ANY SPIILS IMMEDIATELY.
<br /> �".� ♦`O 3. EXCAVATED CONTAMINATED SOIL MAY BE DIRECT-LOADED ASSUMING THE
<br /> �� MATERIAL PASSES A PAINT FILTER TEST.EXCAVATED WET MATERIAL MAY NEED
<br /> ,,,;�` �� TO BE STOCKPILED TO DRAIN TO PASS THE PAINT FILTER TEST PRIOR TO
<br /> '" r^� ` ��` SHIPMENT. USE OF A DEWATER ROLL OFF BOX IS AN ACCEPTABLE ALTERNATIVE
<br /> +. ` ��`� � FOR HANDLING WET MATERIAL.
<br /> ;°' ,:'� �♦
<br /> ♦
<br /> 4. STOCKPILE EXCAVATED MATERIAL WITHIN THE CONTAINMENT BOUNDARIES.
<br /> ,� i' `�♦ EXCAVATED SOIL MAY BE STOCKPILED FOR STAGING/REUSE OR DEWATERING
<br /> ,� , �, ��� PRIOR TO SHIPMENT.COVER THE STOCKPILES DAILY.
<br /> 'r' �
<br /> " �'�K , r` �♦ �` 5. CONDUCT EXCAVATION AND LOADING IN A MANNER THAT MINIMIZES DUST
<br /> *� ��`�.. x ' ��` GENERATION.APPLY WATER OR OTHER MEANS AS NEEDED FOR DUST CONTROL.
<br /> �� ;i \ .' ''.., , �� �O 6. A LICENSED SURVEYOR SHALL ESTABLISH SURVEY MONITORING POINTS ON
<br /> �-� � s�I STRUCTURES ADJACENT TO THE EXCAVATION.OBTAIN BASELINE READINGS
<br /> 1� � ,� � . ; ��`` S ,� PRIOR TO PILE INSTALLATION AND MONITOR DAILY DURING EXCAVATION
<br /> �o, � O ACTIVITIES.SURVEY DATA PROVIDED TO ENGINEER DAILY.
<br /> �
<br /> � �� �� ��� � 7. EXCAVATION AREA'B'SHALL BE COMPLETED USING A FOUR SIDED RIGID
<br /> TRENCH BOX.THE SHORT SIDE OF THE TRENCH BOX SHALL FACE THE BUILDING
<br /> '\, FOUNDATION.
<br /> "h '�` /r' O� 8. EXCAVATION AREA'B'SHALL NOT REMAIN OPEN TO FULL DEPTH OVERNIGHT.
<br /> - THE CONTRACTOR SHALL BACKFILL THE EXCAVATIONS ABOVE THE BUILDING
<br /> \`, / FOUNDATIONS PRIOR TO END OF WORK EACH DAY.
<br /> `��` 9. TEMPORARY CONTAINMENT WILL BE CONSTRUCTED DURING EXCAVATION OF
<br /> � �"� � EXCAVATION AREA'B'TO LIMIT DISTURBANCE TO THE FACILITY.
<br /> 10.UPON COMPLETION OF EXCAVATION OF CONTAMINATED SOILS,THE � Z
<br /> f� EQUIPMENT SHALL BE DECONTAMINATED TO A DEBRIS CLEAN LEVEL OF
<br /> CONTAMINATION.ENGINEER TO INSPECT AFTER COMPLETION. � Q O
<br /> '' 11.SOILS EXCAVATED AND DEEMED RE-USABLE SHALL BE STOCKPILED FOR N
<br /> LL
<br /> �
<br /> ,, x`� REUSE AS BACKFILL. J O �
<br /> �� ��� � � BACKFILL � � Z
<br /> �"� jt � 1. REGENESIS ORS ADVANCED,OR SIMILAR PRODUCT,SHALL BE MIXED INTO � Z =
<br /> � '�` C � NATIVE SOILS AT THE BASE OF THE EXCAVATION,PRIOR TO PLACEMENT OF '/�
<br /> {� X �� BACKFILL,IN AN EFFORT TO PROVIDE ENHANCED, IN-SITU AEROBIC O W v,
<br /> �`�• -` BIOREMEDIATION OF POTENTIAL PETROLEUM HYDROCARBONS REMAINING IN THE � Q
<br /> ♦ >:' <
<br /> , �Tr '`�. . SOIL.
<br /> '` � �� ��� 2. BACKFILL MAY BE PLACED ONCE THE EXCAVATION BASE AND SIDEWALLS HAVE � � �
<br /> � �'..� SD BEEN ACCEPTED BY THE ENGINEER.PLACE BACKFILL IN UNIFORM LOOSE LIFTS Q �
<br /> ��� NOT EXCEEDING 8 INCHES IN THICKNESS. w �
<br /> � �
<br /> \ � ,, L ��� 3. PROVIDE SOIL SAMPLES TO THE ENGINEER FOR PROCTOR AND GRADATION � �
<br /> r� q ��` TESTING WITHIN 3 WORKING DAYS OF INTENDED USE. Q � LLJ
<br /> '!� � ' �'� 4. CHARACTERIZATION TESTING SHALL BE COMPLETED AT A LABORATORY �
<br /> ACCEPTED BY THE ENGINEER AND SHALL INCLUDE THE FOLLOWING: U �
<br /> � ��' � p w
<br /> a.PETROLEUM HYDROCARBONS(NWTPH-HCID) � \
<br /> � b.RCRA 8 METALS(EPA METHOD 200.8/1631 E) w w
<br /> � 5. IF SOFT SOILS OR FREE STANDING WATER ARE ENCOUNTERED AT THE BASE
<br /> OF THE EXCAVATION AREA,THE BASE OF THE EXCAVATION SHALL BE STABILIZED
<br /> w USING QUARRY SPALLS MEETING WSDOT SECTIONS 9-13.1(1)AND 9-13.1(5).
<br /> BUCKET COMPACTION OF THE BACKFILL WILL BE ADEQUATE IN THESE AREAS.NO
<br /> � COMPACTION TESTING WILL BE PERFORMED ON THE QUARRY SPALL BACKFILL.
<br /> � � �` � � �' � �� QUARRY SPALLS SHALL BE PLACED TO 1-FOOT ABOVE GROUND WATER.
<br /> 1- � �� 6. COMPACT EACH LIFT OF BACKFILL MATERIAL(STRUCTURAL FILL OR ON-SITE
<br /> � CLEAN OVERBURDEN SOILS)TO AT LEAST 90%OF THE ASTM D1557 MAXIMUM DRY
<br /> O DENSITY, FROM THE BOTTOM OF THE EXCAVATION TO WITHIN FOUR(4)FEET
<br /> BELOW THE PAVEMENT ELEVATION,AND 95%IN THE UPPER FOUR(4)FEET
<br /> g BELOW THE PAVEMENT ELEVATION.ALL BACKFILL SHALL BE COMPACTED AT A
<br /> MOISTURE CONTENT WITHIN THREE(3)PERCENT OF THE OPTIMUM MOISTURE
<br /> � CONTENT.ADDITIONAL CARE SHOULD BE TAKEN TO ENSURE STABILITY ALONG
<br /> � EXCAVATION SIDEWALLS.
<br /> ti
<br /> 7. PLACE AND COMPACT THE PAVEMENT SUBGRADE TO 95%OF THE MAXIMUM
<br /> � DRY DENSITY.PAVEMENT SUBGRADE SHALL BE AT LEAST 6 INCHES THICK.
<br /> �
<br /> �
<br /> �- COMPACTION CONTROL TESTING
<br /> X 1. LABORATORY AND FIELD TESTS SHALL BE PERFORMED BY THE ENGINEER TO
<br /> W
<br /> � DETERMINE COMPLIANCE WITH THE PROJECT SPECIFICATIONS.
<br /> f!) 2. FIELD TESTS TO DETERMINE IN-PLACE COMPLIANCE WITH REQUIRED
<br /> � N DENSITIES AS SPECIFIED,SHALL BE PERFORMED BY THE ENGINEER IN
<br /> ACCORDANCE WITH ASTM D 2922,
<br /> � a.IN-PLACE DENSITY OF FILUBACKFILL SHALL BE PERFORMED AT A DRAWN BY: E I N
<br /> MINIMUM FREQUENCY OF TWO TESTS PER 5000 SQUARE FEET OF
<br /> C�D MATERIAL PLACEMENT.AT THE ENGINEER'S OPTION,THE NUMBER OF CHECKED BY: TWL
<br /> � TESTS MAY BE REDUCED IF CONSISTENT CONDITIONS AND COMPACTION
<br /> p EFFORTS ARE DEMONSTRATED,OR INCREASED IF NECESSARY. DATE
<br /> � 0 10 �0 11/17
<br /> �
<br /> mFEET PROJECT N0.
<br /> �
<br /> 160594V003
<br /> �
<br /> � F I G U R E
<br /> ° G-5
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