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F <br /> y� <br /> AFTER PURGING THE rANK, BEGIN HIGH PRESSURE WATER RINSING THE TANK INTER�OR <br /> THIS SPECIF�CATION COVERS GAS-FREEING, REMOVAL AND DISPOSAL OF UNDERGROUND TANKS Ill . <br /> USING A MINIMUM OF '2,000 PSi AND DETERGENT (IF' NCCES5ARY). LOOSE SCALE, SLUDGE <br /> AND BACKFILL OF TANK EXCAVATION - THIS SPECIFICATION SHALL SERVE AS A GUIDLINE <br /> AND RINSE WATER SHALL BE REMOVED BY THC VACUUM TRUCK� WHEN THE SLUDGE AND <br /> LOCAL CODES SHALL. PREVAIL. OTHER DEBRIS HAS BEEN REMOVEO AND THE READINGS PER 11 -B-5 ARE LESS THAN 10 <br /> A. JUNKING <br /> PERCENT OF 'THE LOW�R EXPLOSIVE LIMIT, THE WASHING MAY CEASE, MINIMUM OF 3 <br /> WASH CYCLES). <br /> ,rANKS MAY BE HAULED TO AN ESTABLISHED PUBLIC DUMP OR JUNK PILE PROVIDED TH I-Y ARE, MUTILA' TEb <br /> TANKS MUST RE GAS FREED, CLEANED, AND DISPOSED OF IN STRICT ACCORDANCE WITH ALL R�NSING THE TANK: REMOVE ALL POSSIBLE COMMODITY FROM THE TANK BY <br /> TO AN UNRECLAWAEA.E EXTENT TO PREVENT REtRIEVAL FOR ANY PURP05E. CONTRACTOR SHALL <br /> LOCAL GOVERNMENTAL AGENCIES REGULAT�ONS. IT IS THE CONTRACTOR'S RESPONSIBILITY 'TO MEANS OF Pump wrrH SUCTION RESTING ON THE BOTTOM OF THE TANK, <br /> PROVIDE UNOCAL REPRESENTATIVE WITH rANK DISPOSAL MANIFEST. <br /> RE FAMILIAR WITH ALL LOCAL REGLILATIONS AS THEY APPLY TO THIS SCOPE OF WOPK� W THE <br /> OF' WATER PER 1 ,000 <br /> LOCAL, AGENCIES DO NOT HAVE SPECIFIC REQUIREMENTS FOR TANK REMOVAL, 'THE FOLLOWING b. PLACE IN THE TANK THROUGH THE FILL OPENING, 10 GALLONS <br /> B. DISPOSAL, PRECAUTIONS <br /> SPECWICATIONS MUST BE ADHERED TO GALLONS OF CAPACITY� PUMP OUT COMMODITY UNTIL SUCTION IS LOs,r. <br /> IF THE STEEL is 'ro BE SOLD FOR SCRAP AND POSSICILE REMELTING IN, THE MANUFACTURE OF NF.W <br /> C Rr-PEAT STCP "a b , TWICE. (TRIPLE RINSE) STEEL, ALL, INTERIOR SURFACE OF ANY PLATES WHICH HAVE BEEN IN CONTACT Wlrl,-1 st_UDr,,F- <br /> A. .,��f'E T Y jjQNS <br /> SHOULD BE SANDBLASTED OR WIRE BRUSHED -ro 8ARE METAL. <br /> 4� WAIT ONE mit,juri: OR I-ONGER AFTER STOPPING ANY PURGING, VACUUMING Of? WGH PRESSURE WATER �A <br /> PRIOR 'rO EXCAVAflON, THE SITE SHALL BE SAFEGUARDED FROM ALL SOURCES OF <br /> RINSING OPERATIOW CHECK THE TANK FOR AN EXPLOSIVE ATMOSPHERE PER IF ALL <br /> �GNITION FOR AN AREA OF 25 FEET (MIN) IN At-L 01PECTIONS. READINGS ARE LESS THAN 10 PERCEN-r OF THE LOWER EXPLOSIVE LWIT, THEN THE TANK CAN <br /> 2 SMOKING, USE OF' OPEN FLAME, OR USE OF SPARK - PRODUCING TOOLS AND EQWPMEN-r BE CONSIDERED PURGED OF FLAMMABLE VAPORS� <br /> SHALL BE PROHIBITED IN OPEN "TANK AREAS, IV. <br /> 5. AFTER PURGING / CLEANING, PER 11---B-2 THROUGH 4, CHECK THE TANK FOR AN <br /> EXPLOSIVE ATMOSPHERE UTILIZING A CA�ISRATED COMBUSTIBLE GAS INDICATOR. 1 � CLEAR EXCAVATION OF ALL LOOSE SOR.. BEFORE PROCEEDING wrrH BACKFILL, <br /> THE AREA ADJACENT 'TO THE EXCAVATION SHALL UC BARRICADED AGAINST' rviE ENTRANCE. A MINIMUM OF THE UPPER <br /> NO SMOKING FOUR SE"rs OF CHECKS SHOULD BE MADE., ONE SET FOR <br /> OF' UNAUTHORIZED PERSONS. WARNING SIGNS READING " FLAMMABLE S H A L L EXPLOSIVE LIMIT AND ONE FOR LOWER EXPL.OSIVE LWIT (LEL). PLACE THE COMBUSTABLE GAS 2. IF TANKS ARE RELOCATED AND / OR FORMER LOCATION A0ANDONED, CLEAN NATIVE SOIL <br /> BE PROVIDED. �ND�CATOR PROBE INTO THE FILL OPENING WITH THE FILL TUBE REMOVED. READINGS SHALL. HE <br /> IS TO 8E USED AS BACKFILL MATERIAL. FILL MUST BE PLACED IN LEVEL LoOSE LAYERS— <br /> TAKEN AT THE BOTTOM , MIDDLE AND UPPER PORTION OF THE TANK, AND THF,. INSTRuMENT SHALL ABOUT SIX INCHES IN 'THICKNESS, MOISTI�NED NE.AR OPTIMUM MO'ISTURE: AND PROPERLY <br /> 4. TWO PORTABLE FIRE EXT�NGUISHERS, EACH HAVING A MINIMUM RATING OF 20A 80 B:C, <br /> SHALL BE PROVIDED ON SITE. ( OR AS REQUIRED BY LOCAL FIRE DEPT. BE PURGED WITH FRESH AIR AFTER EACH READING. READINGS OF 10% OF LEL OR LESS, AS COMPACTED, SUCCEEDING LAYERS OF FILL SHALL l3r;, SIMILARLY PLACED AND COMPACTED- <br /> INDICATED �N THE 'TANK AND AT THE VENT RISER OR EDUCTOR, SHALL. BE OBTAINED BEFORE THE DURING WE PLACEMENT OF BACKFIL,L. THE, UPPER PORTION OF rHE EXCAVATIoN's <br /> 5. AAD SHALL NOT BE DRAINED INTO A TANK IS SAFE FOR OPENING. SIDEWALLS SHALL BE BROKEN DOWN (BENCHED) TO PROVIDE A, TRANSITION BETWFEN <br /> (,-'.OMMODITY, OR mix,rURE OF COMMODITY AND ANY F1 <br /> STREET, GUTTER, SEWER OR TANK EXCAVATION, THE: COMPACTED FILL. AND ADJOINING GROUND. A GRADINO PE:RMIT AND INSPECTION MAY <br /> BE REQUIRED PER LOCAL AGENCY REQWREMENTS. <br /> PURGING, VACUUMING, AND HIGH PRESSURE WA"TEP R�NSING EQUIPMENT <br /> TEST THE ArMOSPHERE OF THE TANK FOR EXPLOSIVE RANGE WITH A <br /> 10 ( 10%o OF THE LOWER EXPLOSWE SHALL DE BONDED AND GROUNDED TO PROVIDE A PATHWAY FOR <br /> FLAMMABLE VAPOR INWCATOR" WHICH SHALL READ 0 DISSIPATION OF ACCUMULATED STATIC CHARGES� METAL UNDERGROUND 3� IF ASPHALT PAVEMENT IS NOT TO BE REPLACED, 'THE EXCAVAMD AREA SHALL BE <br /> LIWT) OR LOWER. SEE PARAGRAPH 1�-B-5� SMOOTHLY GRADED TO PROVIDE A CLEAN EVEN SURFACE. ALL EXCESS MATERIALS SHALL <br /> TANKS SHALL. BE BONDED TO THE: ABOVE DESCRI13ED EQUIPMENT� WHEN <br /> WORK�NG WITH FIBERGLASS TANKS, THE EQ(APMENT SHALL BE GROUNDED BE REMOVED AND THE AREA SHALL BE LEF'r IN A RAKE CL.EAN CONDITION. <br /> 7. IT IS MANDATORY rHAT A PROPERLY CALIBRATED FLAMMABLE VAPOR AND OXYGEN AND BONDED, GROUNDED METAL RODS MEETING MINIMUM REQUIREMENTS <br /> INDICATOR BE ON THE JOB SITE FROM STAR,r TO FINISH� 4. IF ASPHALT PAVEMENT IS TO BE REPLACED, BACKFILL. SHA�L DE PLACED ANO COMPACTED <br /> SHALL APPLY TO BONDING AND GROUNDING DEVICES. TO SUB-GRADE rLEVATION AFTER WHICH PAVING SEcTiON SHALL UE INSTALLED. PROV�DE <br /> -ATIONS SHALL BE ADHERED TO IN ALL FACETS A NEAT AND SMOOTH TRANSITION WITH EXISTING PAVEMENT SURFACES� AREA SHALL, <br /> 8. CAL / 0,S.H.A. AND FEDERAL O.SAi�A� REGUt i) BONDING AND GROUNDING DEVICrS SHALL BE STRANDED WIRE NOT <br /> OF THIS PROJECT. SMALLER THAN 8 AWG (AMERICAN WIRE GAUGE) WlrH APPROPRIATE BE PROPERLY BROOM CLEANED UPON COMPLETIOiN, <br /> J': <br /> CONTRACTOP SHALL LOCKOUT TAGOUT ALL ELECTRICAL, PER LOCAL 0SHA REQUIREMENTS,, CONNECflONS AT EACIA END�, 5. CONTRACTOR SHALL FURNISH CERTIFIED COMPACTION, REPORT' FROM AN APPROVED SOIL$ j, <br /> DENSTY PER <br /> 11) A SECURE METAL TO METAL CONTACT SHALL BE MADE BETWEEN LABORATORY ACKNOWLEDGING THAT A MINIMUM OF 9 OF MAXIMUM I <br /> ASTM srANDARD U1557 HAS BEEN OBTAINED. TWO COPIES OF THE COMPACTION REPORT <br /> THE rANK AND EQUIPMENT OR THE EQUIPMENT AND GROUND� <br /> SHALL BE FORWARDED TO UNOCAL� <br /> PROCEDURE FOR TANK CLEANING PRIOR TO REMOVAL <br /> ill) WHEN GROUNDiNG' EQUIPMENT, SECURE THE END OF THE A <br /> 1 . UNDERGROUND TANKS SHALL BE CLEANED AND DEGASSED PRIOR TO GROUNDING DEVICE THAT IS NOT ATTACHED TO THE EQUIPMENT TO <br /> REMOVAL US�NG, A'r A MINIMUM, THE FOLLOWING STANDARD PROCEDURE AN ADEQUA,rE GROUND, 1.E METAL WATER PIPE, METAL DRAINAGE, <br /> OR SEWF-R PiPE, WHICH ORIGINATES OR 'TERMINATES IN THE SOU- <br /> THAT THE PROCESS USED MEErS ALL. AIR QUALFTY AUTHORINES AND <br /> ENSURE IF A GROUND AS DESCRIBED AOQVF- IS NOT AVA�LABLE, A METAL ROD <br /> L,O(,',AL CODE REGULATIONS. ORWEN INTO THE SO�L TO A DEPTH NO LESS THAN 3 FEET SHALL <br /> b. PWOR TO ANY WORK ON SITE, CONTRACTOR SHALL PROV�DE UNOCAL WITH THE�R SERVE AS A GROUND. 'A <br /> THE NAMES OF EMPLOYEES WHO <br /> STATE HAZARDOUS WASTE CERTWICATION AND b� TH E BONDING AND GROUNDING DEVICE SHALL BE CONNECTED TO <br /> HAVE PASSED THE TEST. <br /> T H E FOLLOWING EQUIPMEN'r AS DESCRIBED <br /> PRIOR TO EXCAVATION, CONTRACTOR SHALL. OBTAIN AND PAY FOR ALL NECESSARY <br /> i) PURGING EQUIPMENT - CONNECT THE DEVICE TO THE <br /> PERMITS AND LICENSES THAT MAY BE REQUIRED TO PERFORM THIS WORK, UNLESS <br /> APPLIANCE WHERE THE A�R IS D�SCHARGED, 1.E., AT rHE <br /> ASS�GNED 'ro OTHERS. <br /> VENTUW CONE. 4� <br /> d. CONTRACTOR SHALL NOTIFY FIRE DEPARTMENT ' AND / OR ANY OTHER GOVERNMENTAL <br /> INSPECTORS HAVING JURISDICTION SUFFICIENTLY IN ADVANCE OF PROCEEDING WITH P) VACUUMING EQUIPMENT - THC DEVICE SHALL BE <br /> rANK ABANDONMENT. OBTAIN PROPER CLEARANCE TO PROCEED WITH WORK AND CONNEC"rr-'D TO THE EcIuipmcwr WHERE THE L�QUID �S <br /> BEING DISCHARGED, I.E., THE VACOUM TRUCK. <br /> ARRANGE FOR REQUIRED INSPECTIONS. <br /> CONF�RM THAT ALL OF THE TANK'S PRODucT HAS BEEN REMOVED, (SCHEDULED BY 111) FflGH PRESSURE WATER WNSING, EQUIPMENT -- THE DEVICE <br /> UNOCAL'S IREPRESENTAT]VE), SHALL. BE CONNECTED 'TO THE APPLJANCE WHERE THE <br /> NOTE: GONTRAc"rOR MAY PUMP A SMALL AMOUNT OF WATER �NTO Tf-4E , TANK, TO FLOAT WATER IS BEING D�SCHARGED, I.E�, THE WAND OR NOZZLE. <br /> THE PRODUCT FROM LOW SPOTS WHERE ir CAN QE PUMPED , FROM THE I*ANK. THE <br /> MAXIMUM AMOUNT OF WATER SHALL BE 125 GALLONS. C. IF NON METALLIC PURGING, VACUUMING, 0 R H IG 11 PRESSURE WATER <br /> RINSING EQUIPMENt, SUCH AS PVC PIPE, 15 USED, THEN AN 8 AWO <br /> f. CONTRACTOR SHALL REMOVE AND HANDLE ALL RESIDUAL LIQUID, SOLIDS, OR WIRE MUST RUN INSIDE THE ENTIRE, LENGTH OF THE NON --- METALL]C <br /> SLUDGES PURSUANT TO THE APPLICABLE PROVISIONS OF CHAPTERS 6�5 AND 6.7 <br /> EQUIPMENT, AND THIS WIRE MUST OE BONDED TO THE TANK AND <br /> OF D�VISION 20 OF 'THE HEALTH AND SAMTY' CODE AND LOCAL AGENCY CODES. ASSOCIATED EQUIPMENT. <br /> 'ri,4�S INVOLVES D�SCHARGING THE PETROLEUM RESIDUALS INTO APPROVED CONTAINERS <br /> AND TRANSPORTING THEM TO AN APPROPPIATC- R ECLAW ING, RECYC'LING 0R <br /> 6. AFTER "TRIPLE RINSING, (�OMPLLTE THE TANK EXCAVATiON, <br /> TREATMENT' / s-roRAGE / DISPOSAL (TSO) 'FACILITY BY A LICENSED HAZARDOUS <br /> WASTE rRANSPORTER OR LICENSED HAULER SUBJECT 'TO ALL APPLICABLE GOVERNMENT <br /> REGULATION$ AND ALL LOCAL AGENCIES AS REQUIRED� 7 RAISE THE END OF THE TANK tO DRAIN REMAINING 1JQUID TO THE o-rviER END PRIOR TO REMOVING <br /> THE TANK FROM THE EXCAVAT�ON� REMOVE THE PLUG FROM F�[A. OPENINGS AND WITH MAXIMUM <br /> CONTRACTOR SHALL SAW CUr ASPHAV PAVEMEN't IF NECESISA"RY, To MINIMIZE AVA�LAOLE WATER PRESSURE HOSC STREAM. THOROQOt-iLY FLUSH THE ENTIRE INTERIOR -rO WAS�j <br /> 9. DOWN REMAINING COMMODITY, SLUDGE AND LOOSE MATEWAL. <br /> AMOUNT OF" ASPHAt-'r REMOVAL WORK 'TO ACCOMMODATE rANK REMOVAL, W LO'r <br /> DISREGARD SAW CUTTING <br /> STWPPED OF ASHPALT PAVEMENT, <br /> 15 rO BE COMPLETLY <br /> REQUIREMENT. THIS COMMODITY SHALL BE REMOVED BY PUMP WITH SOCTION RESTING AT LOW POINT <br /> OF TANK. RETEST THE TANK ATMOSPHERE TO MAKE CER,rA�N THE READINGS DO NOT EXCEED <br /> 0. 10. IF READING GREATER THAN O� 10 IS OBSERVED, INTRODUCE ADDITIONAL. DRY �CE AS <br /> h CONTRACTOR SHALL BREAK OUT AND REMOVE ASPHALT PAVEMENTo CONCRETE <br /> INDICATED IN PARAGRAPH <br /> SLAPS, ETC. AND DISPOSE OF �N A LAWFUL MANNER IN AN APPROVED DISPOSAL AREA. <br /> THE TANK AND PIPES SHALL BE CL�AN BEFORE REMOVAL FROM THE SITE. ALL <br /> i� EXPOSE TOP OF TANK AND ASSOCIATED UNDERG�ROUND PIPING. BLOW BACK AND 8. <br /> rANK IDENTIFICATION SHALL REMAIN ON THE TANK. DO NOT REMOVE THE UNDERWRITERS <br /> FL.USH PRODUCT LINES INTO TANK. WARNING -- AFTER ANY OPERATION INVOLVING LABORATORY "TAG OR ANY OTHER IDENTIFICATION FROM THE TANK, UNLESS REQWRED BY THE <br /> FLOW OF AIR, WATER, OR PRODUCT INTO OR OUT OF THE TANK, WAIT A MINIMUM OF <br /> THE LOCAL AGENCY. REMOVE THE CLEANSED TANK FROM 'THE CXCAVATION. LOAD AND <br /> ONE M�NUrE AFTER FLOW STOPPAGE BEFORE INSERTING ANY OBJECT INTrO THE SECURE 'THE TANK ON AN APPROPRIATE TRANSPORTING VEHICLE INSUWNG PROPER <br /> TANK <br /> 00CUMENTA,notq �S COMPLETED AND REMOVE TANK FROM THE PREMfSES. <br /> �SOLATE AND DISCONNECT ELECTRICAl- LINES, PRODUCT PIPING AND ASSOCIATED <br /> ATTACHMENTS. ALLOW CONTEws IN PIPING TO DRAIN INTO TANKS 13EF(DRE DlsCoNNECTI�4G. 9. AFTER APPROVAL OF FIRE INSPECTOR HAS BEEN OBTAINED, CON,rRACTOR SHALL, COMPL.ErE <br /> DRAINING CONTENTS INTO TANK EXCAVATION OR SURROUNDING SOIL IS UNACCEPTABLE, REMOVAL. OF' UNDERGROOND TANKS� TANK$ SHALL BE REMOVED WITIA A CRANE ONLY. <br /> !,q <br /> IMMEDIATELY CAP ALL UNUSED OPENINGS. EXCEPT FOR REQUiPED VENTING, ALL FILL AND CRANE SHOULD BE ADEQUATELY SIZED TO ACCOMMODATE TANK SIZES SPECIFIED ON THE <br /> ACCESS LOCATIONS AND PIPING MUST BE SEALED UTILIZING STEEL PWE PLUGS, A TEMPORARY GENERAL ARRANGEMENT DRAWING AND WEIGHTS GIVEN iN DRAWING J- 1 AND J-5� <br /> VEN'r MAY BE INSTALLED AND USED OUWNG 'THE CLEANING PROCESS �N LIEU OF LEAVING <br /> THE VEN'r PIPING INTACT. <br /> lo� CONTRACTOR SHALL. 14AUL TANKS AWAY FROM PREMISES WMEDIATELY AFTER TANK REMOVAL <br /> FROM EXCAVATED AREA. <br /> k� CONTRACTOR SHALL DRA�N ALL PRODUCTS FROM DISPENSERS INTO AN APPROVII0 CONTAINER <br /> BEFORE REMOVING D�SPENSERS FROM PUMP ISLAND� <br /> ll � CONTRACTOR SHALL RECORD TANK NUMBERS AND FURNISH THEM 'TO FIRE DEPARTMENT INSPECTOR <br /> AND UNOCAL ENGINEER. <br /> 2� ONLY ONE OF THE TWO FOLA-0WING METHODS SHALL. BE USFD FOR PURGING "THE TANK ATMOSPHEPE. <br /> CONTINUE THE SELEC,rED PURGING OPFRATION UflflL THE ATMOSPHERE WITH�N THE rANK TESTED 12� CONTRACTOR SHALL IMMEDIATELY NOTIFY 'THE UNOCAL REPRE.SENTATWE �N THE EVENT' THAT <br /> WITH A " FLAMMABLE VAPOR INDICATOW WILL READ 0. '10 (10% OF THE LONAVER EXPLOSIVE 1-IMIT) SOIL CONTAMINATION �S ENCOUNTERED IN THE EXCAVATED AREA, <br /> OR L-OWER OR AS REQUIRED BY THE LOCAL AGENCY� TANKS SHALL NOT BE REMOVED FROM THE <br /> GROUND UNTIL THIS LEVEL IS ACHIEVED. <br /> at <br /> a F FOR EACIA 1 , 000 GALLONS OF rANK CAPAC11Y, �_M!NIMUM ULN-a� <br /> JH <br /> ,,.-Q <br /> _;_QZ <br /> --oF C06, �R- BASED ON LOCAL ORDINANCES), IN THE FORM OF DRY ICE, SHALL AGE <br /> T-R —tHE FILL OPEN�NG-. <br /> CAUT N FOR 'THE FOLLOWING PROCEDURE, A GROUNDED WSCHARGING DEV'ICE MUST BE <br /> USED TO DISSWATE STATIC ELCCTRIC CHARGES. SEE b , AND C. <br /> b. A SING ME-r!!_Ql? <br /> DEGASSING SHALL BE PFR LOCAL A(,,EN(,,Y REQUIREMENTS. <br /> ONLY LOCAL AGENCY APPROV15D DEGASSiNG EQUIPMENT SHALL QE USEI))� Tvils <br /> EQUIPMENT �s "rHREADF-1) ON TO THE , FUEL TANKS. <br /> ----------- <br /> DESTROY ALL PRAITS RFV� CKD, APPO <br /> APPROVAL REORD, <br /> BY BY UY APPROVALS <br /> -MLIER CATE tvo R <br /> REVISED <br /> REV DATE 'y TAIT <br /> MUSTONE DAI E APPROYAA, <br /> UNION 01L OF CA-IFORNIA, dba UNOCAL, 1994 <br /> U N D E RGRQU N D 'STORAGE '-'TAN K <br /> 6$00 FOR 01,P. <br /> THIS DONMENT AND THE INFORMATION CON'TAINED [AERONAS , <br /> ....... cw.�ow By WD <br /> REMOVAL AND. , U)POISA SIP <br /> PROPRIETARY TO MON OIL, OF CALIFORNIA (UNOCAL) 'AND, [1AS �nwm Ewpep��lo W"ER) OAM, <br /> ISSUED FOR PLAN CHECK <br /> BEEN R)RNISHED IN COWIDENCE AND ARE SUBJECT 'TO, THE '' 1A <br /> APPROVED <br /> TERMS OF A SEPARATE SECRECY AGREEMEN'T BETWEEN 00CAL <br /> ISSUED F(l R C,EN, 8)D `7 <br /> uNq wmxR <br /> AND ME RECIPIENT, THE RECIPIENT IS NOf TO COPY, DUPLICATE ......------ <br /> 2-8-95 <br /> 'f[riORIZED BY SAID AGREEMENT OR BY UNOCAL <br /> TS TO ANY PER13ON OR ENTITY EXCEPT 15$UED rOR CONSTRUCL TS4000y , <br /> OR DISCLO' E THE CONTEN PRODUC <br /> NONE <br /> AS EXPRESSLY AU <br /> IN WRITM, RECORD, ORAWING <br /> No, <br /> J <br /> 4 <br />