905 80TH ST SW FORMOST FUJI 2024-12-03

N 9 OPTION: STOCKPILE EXISTING TOPSOIL STOCKPILE EXISTING TOPSOIL DURING GRADING. STOCKPILE AND COVER SOIL WITH WEED BARRIER MATERIAL THAT SHEDS MOISTURE YET ALLOWS AIR TRANSMISSION, IN APPROVED LOCATION, PRIOR TO GRADING. REPLACE STOCKPILED TOPSOIL PRIOR TO PLANTING. STOCKPILED TOPSOIL SHALL BE TESTED AND AMENDED IF NEEDED TO MEET THE ORGANIC MATTER OR DEPTH REQUIREMENTS EITHER AT PREAPPROVED RATE OR CALCULATED RATE. ALL SOIL AREAS DISTURBED OR COMPACTED DURING CONSTRUCTION, AND NOT COVERED BY BUILDINGS OR PAVEMENT, SHALL BE AMENDED WITH COMPOST AS DESCRIBED BELOW. 1. SCARIFICATION: IF PLACED TOPSOIL PLUS COMPOST OR OTHER ORGANIC MATERIAL WILL AMOUNT TO LESS THAN 12 INCHES, SCARIFY OR TILLSUBGRADE TO DEPTH NEEDED TO ACHIEVE 12 INCHES OF LOOSENED SOIL AFTER TOPSOIL AND AMENDMENT ARE PLACED. ENTIRE SURFACE SHOULD BE DISTURBED BY SCARIFICATION. DO NOT SCARIFY WITHIN DRIP LINE OF EXITING TREES TO BE RETAINED. 2. SETBACKS: TO PREVENT UNEVEN SETTLING, DO NOT COMPOST -AMEND SOILS WITHIN 3 FEET ON CENTER OF UTILITY INFRASTRUCTURE (POLES, VAULTS, METERS ETC.). WITHIN ONE FOOT OF PAVEMENT EDGE, CURBS AND SIDEWALKS; SOIL SHOULD BE COMPACTED TO APPROXIMATELY 90% MAX. MODIFIEDPROCTOR DENSITY (A5TM D1557) TO ENSURE A FIRM SURFACE. DO NOT COMPACT WITHIN TREE PROTECTION ZONE. OPTION: AMEND EXISTING TOPSOIL AMEND EXISTING SITE TOPSOIL, OR SUBSOIL, EITHER AT PREAPPROVED RATE OR AT CALCULATED RATE BASED ON TESTS OF THE SOIL AND AMENDMENTS. ALL SOIL AREAS DISTURBED OR COMPACTED DURING CONSTRUCTION AND NOT COVERED BY BUILDINGS OR PAVEMENT, SHALL BE AMENDED WITH COMPOST AS DESCRIBED BELOW. 1. SCARIFICATION; SCARIFY OR TILL SUBGRADE TO 8 INCHES DEPTH (OR TO DEPTH NEEDED TO ACHIEVE A TOTAL DEPTH OF 12 INCHES OF UNCOMPACTED SOIL AFTER CALCULATED AMOUNT OF AMENDMENT IS ADDED). ENTIRE SURFACE SHOULD BE DISTURBED BY SCARIFICATION. DO NOT SCARIFY WITHIN DRIP LINE OF EXISTING TREES TO BE RETAINED OR WHERE SCARIFICATION WOULD DAMAGE TREE ROOTS OR AS DETERMINED BY THE ENGINEER. 2. SETBACKS: TO PREVENT UNEVEN SETTLING, DO NOT COMPOST -AMEND SOILS WITHIN 3 FEET ON CENTER OF UTILITY INFRASTRUCTURE (POLES, VAULTS, METERS ETC.). WITHIN ONE FOOT OF PAVEMENT EDGE, CURBS AND SIDEWALKS; SOIL SHOULD BE COMPACTED TO APPROXIMATELY 90% MAX. MODIFIED PROCTOR DENSITY (ASTM D1557) TO ENSURE A FIRM SURFACE. DO NOT COMPACT WITHIN TREE PROTECTION ZONE. 3"-4" (SETTLED} ARBORIST WOOD CHIP MULCH 3" OF COMPOST INCORPORATED INTO i 5" OF SITE SOIL (TOTAL AMENDED DEPTH OF 9.5", FOR A SETTLED DEPTH OF 8") SUBSOIL SCARIFIED 4" BELOW COMPOST AMENDED LAYER (12" BELOW SOIL SURFACE) PLANTING BEDS 1. PREAPPROVED RATE: PLACE 3 INCHES OF COMPOSTED MATERIAL AND ROTOTILL INTO 5 INCHES OF EXISTING SITE SOILS (A TOTAL AMENDED DEPTH OF ABOUT 9.S INCHES, FOR A SETTLED DEPTH OF 8 INCHES). 2. CALCULATED RATE: PLACE CALCULATED AMOUNT OF COMPOSTED MATERIAL OR APPROVED ORGANIC MATERIAL AND ROTOTILL INTO DEPTH OF SOIL NEEDED TO ACHIEVE 8 INCHES OF SETTLED SOIL AT 10% ORGANIC CONTENT. 3. RAKE BEDS TO SMOOTH AND REMOVE SURFACE ROCKS LARGER THAN 2 INCHES DIAMETER. MULCH PLANTING BEDS WITH 3"-4" OF ORGANIC MULCH OR STOCKPILED DUFF. 0" 12" -- j GRASS SEED OR SOD 1.7S" OF COMPOST INCORPORATED INTO 6.2S" OF SITE SOIL (TOTAL AMENDED DEPTH OF 9.5", FOR A SETTLED DEPTH OF 8") SUBSOIL SCARIFIED 4" BELOW COMPOST AMENDED LAYER (12" BELOW SOIL SURFACE) TURF (LAWN) AREAS 1. PREAPPROVED RATE: PLACE 2.75 INCHES OF COMPOSTED MATERIAL AND ROTOTILL INTO 6.25 INCHES OF EXISTING SITE SOILS (A TOTAL AMENDED DEPTH OF ABOUT 9.5 INCHES, FOR A SETTLED DEPTH OF 8 INCHES). 2. CALCULATED RATE: PLACE CALCULATED AMOUNT OF COMPOSTED MATERIAL OR APPROVED ORGANIC MATERIAL AND ROTOTILL INTO DEPTH OF SOIL NEEDED TO ACHIEVE 8 INCHES OF SETTLED SOIL AT S% ORGANIC CONTENT. 3. WATER OR ROLL TO COMPACT TO 85% OF MAXIMUM DRY DENSITY. RAKE TO LEVEL AND REMOVE SURFACE ROCKS LARGER THAN 1 INCH DIAMETER. EVERETT PUBLIC WORKS YVIKtlIIN4rp" DEPARTMENT rar 1 I"eancnengFirti 1-1-11LIm I — 01/04/20-, POST- CONSTRUCTION SOIL QUALITY AND DEPTH 203 I