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<br /> 000 " AUGH HuTORD U M C M L 0 �WASUE OM UHDg .DD (R. R0MHD 2VOMD ACS H
<br /> INSTALLATION EXCAVATION SHALL COMPLY IN ALL RESPECTS TO TESTING
<br /> TITLE 8 OF THE CALIFORNIA ADMINISTRATIVE - 2. .PIPING. FOR SINGLE--WALLED PIPING, DISCONNECT THE
<br /> 1. TANKUNLESS CERTIFIED BY A REGISTERED CIVIL OR CODE SECTION 16110(D) , REQUIRING EITHER SHORING ENTIRE PIPING SYSTEM FROM PUMPS AND/OR
<br /> STRUCTURAL ENGINEER, TANKS SHOULD NOT BE OR 450 TAPER TO EXCAVATION WALLS IN ALL AREAS OBTAIN ACCEPTANCE OF TESTS FRO14 LOCAL INSPECTION AUTHORITY DISPENSERS AND TANKS , APPLY. SO PS16 AIR+f
<br /> PLACED WITHIN IO FEET OF ANY FOUNDATION , WHERE EXCAVATION EXCEEDS S
<br /> BEFORE BACKFILLING TANK AND/OR PIPING , PRESSURE . THE INITIAL TEST PRESSURE SHOULD
<br /> ''
<br /> PROV[DE' SUFFQCBE MAINTAINED FOR 60 MINUTES WITHONLY
<br /> yIENT DEAD WEIGHT (FOR EXAMPLE : , a, . : . I. TANK, FOLLOW MANUFACTURER 'S RECOMMENDATIONS FOR MINIMAL PRESSURE DROP,' LEAKS MAY BE LOCATED
<br /> A REINFORCED CONCRETE DEADMAN`S SLAB) T0 ; Z. PIPING BEFORE UNDERGROUND PIPES ARE LAID, PLACE TESTING, IN GENERAL, TEST THE'TANK WITH' BY SOAPING ALL JOINTS WHILE; 1`HE .SY8iEM IS
<br /> BALLAST THE EMPTY TANK, AGAINST. MAXIMUM' AND COMPACT .CLEAN' SAND ,IN THE TRENCH TOA:,r BETWEEN' 3 AND' 5-PSIG AIR PRESSURE BEFORE,"
<br /> ANTICIPATED :URL,IFT FORCES. PROVIDE CAL- MINIMUM 6°°. AFTER LAYING THE PIPES, PLACE LOWERING- THE-;TANK INTO THE UNAER PRESSURE; FOLLOW MANUFACTURER'S
<br /> EXCAVATION.,' THE INSTRUCTIONS" FOR TESTING= DOUBLE-IWALLED:i
<br /> CULATIONS TO DEMONSTRATE THE ADEQUACY OF AND COMPACT CLEAN, AIR-DRY SAND AROUND AND INITIAL TEST PRESSURE SHALL BE MAINTAINED PIPING,`
<br /> THE BALLAST PROPOSED, TANK EXCAVATION SHOULD - OVER THE PIPES TO AMINIMUM COVER OF 6". - WITHOUT SIGNIFICANT PRESSURE DROP FOR LO
<br /> BE LARGE ENOUGH TO PROVIDE A MINIMUM 13" FILL THE REMAINDER OF THE TRENCH WITH MINUTES BEFORE INSPECTING TANK SEAMS AND
<br /> CLEARANCE IN ALL HORIZONTAL DIRECTIONS EITHER SAND OR BACKFILL IN 6" MAXIMUM
<br /> PIPE OPENING CONNECTIONS , ALL SEAMS AND,
<br /> AS PER. MANUFACTURER `S INSTRUCTIONS . COVER LAYERS AND COMPACTED TO 95% OF THE MAXIMUM CONNECTF.QNS SHA" BE LEAK:' TESTED AT FULL,' r alua �i�otntot[ee.�.Pnc.
<br /> DEPTHS SHOULD MEET MANUFACTURER 'S SPECIE- DENSITY OF ASTM 1557-73, OR TO THE DENSITY TEST PRESSURE WITH A SOAP. AND WATER SQLUTION,�
<br /> ICATIONS, PROVIDE A 12" BED OF 3/8" DIA.' SPECIFIED FOR THE SURROUNDING FILL, WHICH IF TANKS ARE DROPPED OR IMPACTED AFTER
<br /> PEA, GRAVEL' TO.. ASSURE -UNIFORM SUPPORY::;.UNDER, EVER IS HIGHER . BACKFILL MAY BE EXCAVATED INITIAL PRESSURE TEST, REMOVE TANK FROM
<br /> THE TANK. BACKFILL UNIFORMLY WITH FREE- MATERIAL, PROVIDED IT DOES NOT CONTAIN EXCAVATION AND REPEAT THE TEST PROCEDURE.
<br /> FLOWING CLEAN PEA GRAVEL(NATURALLY-ROUNDED ORGANIC MATTER, AND SHOULD BE PLACED AT IF TANK LEAKS, IT SHALL BE REPLACED, NOT -
<br /> AGGREGATE WITH PARTICLES RANGING FROM 1/3" CLOSE TO OPTIMUM MOISTURE CONTENT.
<br /> TO 3/3rr ' PROJECT NGIN DIAMETER) COVERING TANK TO WITH-H- ^" �� � - - - REPAIRED . . TL 686- 082 - 00
<br /> _
<br /> 10/14 bl STAGE No'(Eb fRDr1 Top 1PN�51 SJ,& APPROVED
<br /> IN LZ" OF GRADE AND FINISH WITH 1/14" '.of MICROFILM
<br /> " CRUSHED BY GM BILL OF MAIL
<br /> STONE . - SUPV. DWG LIST
<br /> OSG . SUPSDS
<br /> THE TANK SHQULD„BE INSTALLED. ONSLOPEOF:'-I/V _DWN. SUPSDS BY
<br /> PER FOpT. CHKOO -, PACIFIC GAS AND ELECTRIC COMPANY SHEET NO. SHEETS
<br /> ae4v.
<br /> _ NO. DATE DESCRIPTION RE VI$ IQNS GM/SPEC OW N, CHK0. SUPV. APVD. BY N0. DATE DESCRIPTION GM/SPEC OWN. CIHKD SUPV A9D. 8Y
<br /> SCALES SAN FRANSISCO, CALIFORNIA R 5 1
<br /> REVISION S
<br /> 11•>. ..1.MtD O..XO.tCCM CtEMKIM. � .
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