Amendment 4- - BID - 020 - POND AND CRYPT FIELD SECTIONS (R1)

CG-201
12'-0" (TYP.)

12'-0" (TYP.)

EX. POND PROFILE

DESIGN STANDING

WSE = 893.25'

A

A

EL. 889.25'
EL. 886.75'

NEW AGGREGATE, LINER, AND SAND

EXCAVATION

SECTION - WET DETENTION POND (LONGITUDINAL)

3/16" = 1'-0"

EX. CLEANOUT

REMOVE HARDENED

IDENTIFIER LAYER

1'-0"

REMOVE TOPSOIL &

COMPACTED FILL

1'-0"

B

B

MODIFY EX. SWM INLET

EL. 898.0'

CU-201

EX. POND

PROFILE

INLET EL. 893.25

WSE = 893.25'

EX. BERM

DRAIN INV. EL. 893.5

EX. DRAIN

EL. 889.25'

SECTION - WET DETENTION POND

REMOVAL

REPLACE EXISTING TURF/SOD

(SEE LANDSCAPE)

3/16" = 1'-0"

COMPACTED BACKFILL

SAND IDENTIFICATION COURSE;

4" NATURAL SAND LAYER

REPLACE TOPSOIL. CONTRACTOR TO

USE NEWLY IMPORTED TOPSOIL

CLAY LINER REPLACED IN KIND

ANCHOR TRENCH. BACKFILL W/

EXCAVATED MATERIAL

2'-0"

CG-201

SAND

1'-6"

18"

12"

D

D

EXISTING CLAY LINER

3'-0"

TOPSOIL

12" AGGREGATE COVER

EPDM LINER, 45 MIL

BETWEEN TWO

GEOTEXTILE LAYERS

EX. IRRIGATION LINE

EX. PRECAST

LAWN CRYPTS

REPLACEMENT (END VIEW)

REPLACEMENT (SIDE VIEW)

POND LINER INSTALLATION INTO SLOPE

SAND IDENTIFICATION COURSE;

4" NATURAL SAND LAYER

GRAVESITE GRID

MONUMENT

EX. CLEANOUT

WSE = 893.25'

COMPACTED BACKFILL

REPLACE EXISTING TURF/SOD

1'-8" MIN

COVER

TOP OF LINER

EL. = 896.0

REPLACE TOPSOIL. CONTRACTOR TO

USE NEWLY IMPORTED TOPSOIL

3' GEOTEXTILE INTERFACE STRIP B/T

AGGREGATE & CLAY

1'-10" MAX

COVER

REMOVE

CLAY LINER

VARIES

EXISTING CLAY LINER

(TO REMAIN)

EX. PRECAST

LAWN CRYPTS

C

C

EL. 886.75'

1'-8" MIN
1'-10" MAX

COVER

EXISTING SWM OUTLET

STRUCTURE

1/4" = 1'-0"

4" IDENTIFIER LAYER REMOVE AND REPLACE

1/2" = 1'-0"

E

E

45 MIL EPDM LINER B/T TWO GEOTEXTILE LAYERS,

FIRESTONE PONDGUARD OR APPROVED EQUIVALENT CG-201

12" AGGREGATE

1'-0"

3" SEAM OVERLAP

EPDM PRIMER, QUICKPRIME PLUS OR

APPROVED EQUIVALENT (SEE NOTE 1)

3" WIDE BUTYL ADHESIVE SEAM TAPE,

FIRESTONE QUCKSEAM SPLICE TAPE

OR APPROVED EQUIVALENT (SEE NOTE 2)

1'-6"

GEOTEXTILE

45 MIL EPDM POND LINER,

FIRESTONE PONDGUARD

OR APPROVED EQUIVALENT

45 MIL EPDM POND LINER,

FIRESTONE PONDGUARD

OR APPROVED EQUIVALENT

DIRECTION OF WATER FLOW

SAND

1.

CLEAN AND DRY THE AREAS TO BE JOINED WITH A LINT-FREE CLOTH AND APPROVED CLEANER, THEN APPLY EPDM PRIMER TO SEAM AREAS OF BOTH LINERS. ALLOW PRIMER TO FLASH BEFORE APPLYING SEAM TAPE.

2.

CAREFULLY ALIGN AND APPLY DOUBLE-SIDED SEAM TAPE TO LOWER LINER FIRST. ROLL TO ELIMINATE AIR POCKETS. REMOVE BACKING FROM TOP OF SEAM TAPE AND LAY UPPER LINER SECTION ONTO IT. USING A WEIGHTED ROLLER, COMPRESS ENTIRE SEAM