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FINISH <br />GRADE <br />SLOPE AWAY <br />TO DRAIN <br />SEE NOTE 2A <br />I 2" (MINIMUM) LAYER OF <br />6" �� CRMINUS <br />CRUSHED ROCK / <br />NATIVE SOIL <br />NATIVE SOIL (UNDISTURBED) <br />BACKFILL <br />SEE NOTE 2C <br />\ V%��i\>z <br />III tj pG� <br />--------- <br />1111111 NOTES: (1) AREAS WHERE PIPING AND CONDUIT SPAN <br />SEE NOTE 2A <br />III THE TANK EXCAVATION SHALL BE BACKFILLED <br />WITH WATER SETTLED SAND TO PREVENT <br />1111— <br />SETTLING. <br />6'x6" RING <br />OF BENTONITE <br />(CENTER ON SEAM) <br />SEE NOTE 2B <br />(2) SEALING AND WATER TIGHTNESS TESTING: <br />NO MORE THAN ONE GALLON OF WATER LOSS IN 24 HOURS <br />SLOPE OR SHORE SHALL BE TOLERATED. FIELD REPAIRS MAY BE ATTEMPTED <br />IF THETEST <br />EXCAVATION IN ACCORDANCE ANSECOND IMEITNSHALL BEFAILSHREPLAC RWATEREPLACED NOESEXPENSE <br />WITH APPLICABLE SAFETY TO THE OWNER. <br />REQUIREMENTS <br />(A) ALL PIPE PENETRATIONS AND RISER SEAMS SHALL BE <br />VISUALLY TESTED WITH WATER. ANY OBVIOUS LEAKAGE <br />SHALL RESULT IN RE -GROUTING. ALL PIPE PENETRATIONS <br />1'x6" <br />AND RISER SEAMS SHALL BE SURROUNDED WITH A <br />WOODEN <br />FORM <br />MINIMUM OF SIX INCHES OF BENTONITE PRIOR TO <br />BACKFILLING. <br />(B) TWO-PIECE (MID -SEAM) TANKS: BACKFILL TO 3 INCHES BELOW <br />THE MID -RIB SEAM BEFORE INITIATING THE WATER <br />TIGHTNESS TEST. FILL THE TANK WITH WATER TO 6 <br />INCHES ABOVE THE SEAM FOR THE INITIAL TEST. IF <br />THE SEAM DOES NOT LEAK, PLACE BENTONITE, BACKFILL <br />LIFTS (COMPACTED SOIL, CRUSHED ROCK, PEA TO THE EXTERIOR TANK TOP AND FILL THE TANK WITH <br />i2 GRAVEL, OR WATER SETTLED SAND) WATER TO 2 INCHES INTO THE RISERS (NO MORE). PRE- <br />SOAK FOR 24 HOURS AND REFILL, IF NECESSARY. <br />80 <br />o°oo°o°pO° <br />STABLE LEVEL BASE <br />00°0 (C) ONE-PIECE OR TOP SEAM TANKS: BACKFILL TO 6 INCHES BELOW <br />o ° 6 (MINIMUM) COMPACTED 3/4" MINUS THE EXTERIOR TANK TOP, FILL THE TANK WITH WATER TO 2 <br />CRUSHED ROCK OR WATER SETTLED SAND INCHES INTO THE RISERS (NO MORE). PRE-SOAK FOR 24 <br />80 00 80 00 0 00 0 00 00 00 00 00 00 <br />0000O°°°°O0 o�P°o°O°0°O0o <br />_ _ _ _ _ _ <br />opOo°00008o°Wiwwii <br />111-111-111=111=111-11111=111-111-111-111= <br />- HOURS AND REFILL, IF NECESSARY. PLACE BENTONITE <br />11-111=1 <br />I Im11I-111-111JLI I1-111T=� 1— <br />PRIOR TO FINAL BACKFILL. <br />NATIVE SOIL <br />(UNDISTURBED) <br />CPSS <br />Certified Professional <br />Soil Scientist <br />BRIAN T. RABE <br />15239 Exp. <br />Registered Wmu,W. er SpecWNI <br />No. EH.W448430 Exp. <br />'REUSE OF DOCUMENTS: THIS DOCUMENT AND THE IDEAS AND DESIGN INCORPORATED HEREIN, AS AN INSTRUMENT OF PROFESSIONAL SERVICE IS THE PROPERTY OF CASCADE EARTH SCIENCES AND IS NOT TO BE USED. WHOLE OR IN PART WITHOUT THE WRITTEN AUTHORRATION OF CASCADE EARTH SCIENCES I <br />REV DESCRIPTION BY DATE I DES. BY BUT SHEET <br />CASCADE EARTH SCIENCES Tank Excavation and <br />Ys1349 Russian Orthodox Church DRG. BY DDD CES <br />Backfill Detail T 1 <br />13495 Woodburn Monitor Rd. CHK. BY -- A Valmont Industries Company <br />Woodburn, Oregon DATE Iv16L201B CALL 1-800-728-8322 Sewage System Treatment Alteration <br />Joe No .2016240205 FOR NATIONAL OFFICE LOCATIONS 9 Y <br />