1. DO NOT SCARIFY SUBSOIL WITHIN TREE PROTECTION AREA OR DRIPLINE
EXISTING
TREE
SCARIFIED SUBSOIL
FOOTPRINT AREA
BUILDING
DO NOT SCARIFY SUBSOIL WITHIN 3 m OF BUILDING FOUNDATION
DO NOT SCARIFY SUBSOIL WITHIN 1 m OF SHALLOW UNDERGROUND UTILITIES OR AS
DIRECTED BY
UTILITY PROVIDER
WALKWAY
DRIVEWAY
DO NOT SCARIFY SUBSOIL WITHIN 0.45 m OF CURBS, WALKS, DRIVEWAYS AND OTHER STRUCTURES
SCARIFIED SUBSOIL
FOOTPRINT AREA

2. SUBSOIL SCARIFICATION PATTERN BY SOIL FRACTURING OR TRENCHING
IN TWO DIRECTIONS
START
END
SUBGRADE
SLOPE
SUBGRADE
SLOPE

3. SUBSOIL SCARIFICATION PATTERN BY SOIL RIPPING OR TRENCHING PERPENDICULAR TO SUBGRADE SLOPE
START
SUBGRADE
SLOPE
SUBGRADE
SLOPE
END

4. WITH RIPPER BUCKET ATTACHMENT PERPENDICULAR TO SUBGRADE SLOPE
SUBSOIL SCARIFICATION PATTERN BY SOIL RIPPING USING EXCAVATOR OR BACK HOE
WITH RIPPER BUCKET ATTACHMENT PERPENDICULAR TO SUBGRADE SLOPE
START 3 2 1
SUBGRADE
SLOPE
SUBGRADE
SLOPE 4 5 6
END

5. METHOD 1: PLACE IMPORTED COMPOST AMENDED PLANTING SOIL
STEP 1.
SCARIFY SUBSOIL TO
45 TO 60 cm DEPTH
STEP 3.
PLACE IMPORTED COMPOST AMENDED PLANTING SOIL MIX AND ALLOW FOR 10 TO 15% VOLUME LOSS DUE TO SETTLING
STEP 3.
ALLOW TO SETTLE OR LIGHTLY TAMP OR ROLL TO 75 TO 85% MAX. DRY DENSITY
FINISHED GRADE
COMPOST AMENDED
PLANTING SOIL
COMPOST AMENDED PLANTING SOIL
RESTORE PRE-CONSTRUCTION
DEPTH OR 20 TO 30 cm OF
PLANTING SOIL
SCARIFIED SUBSOIL
SCARIFIED SUBSOIL
SCARIFIED SUBSOIL

6. METHOD 2: AMEND BASE TOPSOIL BY INCORPORATING COMPOST
STEP 1.
SCARIFY SUBSOIL TO 45 TO 60 cm DEPTH
STEP 2.
PLACE BASE TOPSOIL AND COMPOST AT 3:1 RATIO BY VOLUME OR CUSTOM RATIO AND ALLOW FOR 10 TO 15% SETTLING
STEP 3.
INCORPORATE THROUGH TILLING TO 15 to 20 cm DEPTH
STEP 4.
ALLOW TO SETTLE OR LIGHTLY TAMP OR ROLL TO 75 TO 85% MAX. DRY DENSITY
FINISHED GRADE
COMPOST
COMPOST AMENDED PLANTING SOIL
COMPOST AMENDED PLANTING SOIL
BASE TOPSOIL
BASE TOPSOIL
RESTORE PRE-CONSTRUCTION
DEPTH OR 20 TO 30 cm OF
PLANTING SOIL
BASE TOPSOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL

7. COMPOST AMENDED PLANTING SOIL
METHOD 3: PLACE BASE TOPSOIL AND IMPORTED COMPOST AMENDED PLANTING SOIL
STEP 1.
SCARIFY SUBSOIL TO
45 TO 60 cm DEPTH
STEP 2.
PLACE BASE TOPSOIL AND COMPOST AMENDED PLANTING SOIL MIX AT 1:1 RATIO AND ALLOW FOR 10 TO 15% VOLUME LOSS DUE TO SETTLING
STEP 3.
INCORPORATE BY TILLING TO 15 to 20 cm DEPTH AND ALLOW TO SETTLE OR LIGHTLY TAMP OR ROLL TO 75 TO 85% MAX. DRY DENSITY
FINISHED GRADE
FINISHED GRADE
COMPOST AMENDED
PLANTING SOIL
COMPOST AMENDED PLANTING SOIL
RESTORE PRE-CONSTRUCTION
DEPTH OR 20 TO 30 cm OF
PLANTING SOIL
BASE TOPSOIL
BASE TOPSOIL
SCARIFIED SUBSOIL
SCARIFIED SUBSOIL
SCARIFIED SUBSOIL

8. METHOD 4: AMEND SITE SUBSOIL BY INCORPORATING COMPOST
STEP 1.
SCARIFY SUBSOIL TO 45 TO 60 cm DEPTH
STEP 2.
PLACE 7 TO 12 cm COMPOST
STEP 3.
INCORPORATE THROUGH TILLING TO 15 to 20 cm DEPTH
STEP 4.
ALLOW TO SETTLE OR LIGHTLY TAMP OR ROLL TO 75 TO 85% MAX. DRY DENSITY
FINISHED GRADE
COMPOST
COMPOST AMENDED PLANTING SOIL
COMPOST AMENDED PLANTING SOIL
RESTORE PRE-CONSTRUCTION
DEPTH OR 15 TO 20 cm OF
PLANTING SOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL
SCARIFIED
SUBSOIL