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- METEREU BACKPLOW ASSEMBLY
(10 BE OBTAINED FROM CITY)
(1) 2 lt' C0NTROL VALVE
(1) CONSTRUCTION METER
(l) RPSA
METER SUPPORT (BY CONTRACTOR)
NSF 61 SUPPLY HOSE
- HYDRANT OIL EXISTING WATER MAIN
TEMPORARY BLOW- 0FF ASSEMBLY
(1) 2" GALVANIZED PIPE
(1) 2" 9r BEND
(1) 2" GATE VALVE
W DI WATER MAMA. .I � F
C1LYP
POLYPIG STATION —
(1) VE RTICAL CROSS I MJxFQ, SIZE TO MATCH WATER MAIN
(1) BLIND f ANGE WITH 2" TAP ON TOP OF CROSS
(1) TEMPORARY BLOW -OFF ASSEMBLY
(1) BLIND FLANGE ON BOTTOM OF CROSS
(1) PLUG (M)) ON END OF CROSS WITH TEMPORARY THRUST BLOCKI NG
NOTES:
1. THE BAC1[FLOW PREVENTION ASSEMBLY AND SUPPLYHO51 MUST BE DISCONNECTED DURING HYDR05TATiCPRESSURE TESTING, OF THE
NEW WATER MAIN.
2. POLYPIG AND ALL DEBRIS SHALL BE REMOVED FROM SUMP OF VERTICAL CROSS VIA SANITARY METHOD PRIOR TO DISINFECTION OF NEW
WATER MAIN.
3. UPON REMOVAL OF POLYP IG, REMOVE TEMPORARY BLOW -OFF ASSEMBLY AN INSTALL 2" PLUG.
4, THE NEW WATER MAIN SHALE BE CONNECTED TO THE EXISTING SYSTEM ONLY AFTER NEW WATER MAIN IS POLY PIGGED, DISINFECTED
AND SATISFACTORY BACTER10LOG ICAL SAMPLE RESULT'S ARE OBTAINED,
5- TH E INTE RIORS OF ALL PIPES AND FITTINGS TO BE USED IN FINAL CONN ECTION MUST BE SWABBED OR SPRAYED WITH A "% AVAILABLE
CHLORINE SOLUTION.
STD. PLAN - 300.7
PUBLIC WORKS hPDR47VED
DEPARTMENT POLYPIGGINC NEW WATER MAINS
x DATE
0
a�
Know what's below.
Call before you dig.
POLYPIGGING NEW WATER MAINS
f-. TACO MA - S EATTL E
�ros72 ��:/► SPOKANE - TRI-CITIES
2215 North 30th Street, Suite 300 Tacoma, WA 98403
SIGNAL E�
253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB
05/15/2026
CUT
f
3' fV1IN RADIUS
A_
UNOBSTRUCTED WOR KiNG AREA
AROUND OUTSIDE OF FIRE HYDRANT 0.7" - f — 4"
ONE MAN DOCK BLUE REFLECTIVE PAVEMENT MARKER,
STIMSONITE M00EL C88 Ok EQUAL,
1 L PLACED 4" FROM ROADWAY
1 CENTERLINE AS INDICATED BELOW
_ 4'x4'x6" CONCRETE SHEAR BLOCK
MARKER MARKER
FILL
T MIN RADIUS
UNOBSTRUCTED WORKING AREA
AROUND OUTSIDE OF FIRE HYDRANT TWO LANE ROAD OFFSET MARKER ON SIDE STREETS INHERE THE HYDRANT IS
WITHIN 20' OF A MAJOR STREET, THE MARKER
SHALL BE INSTALLED Ohl THAT MAJOR STREET
T_
MARKER MMICIER
It
4'0'x6" CONCRETE SHEAR BLOCK
MOTE_ FOUR LANE ROAD OFFSET MARKER FIVE LANE ROAD OFFSET MARKER
4'x4'x6" CONCRETE SHEAR BLOCK AROUND FIRE HYDRANT WITH EXPANSION JOINT AT BACK OF SIDEWAUC, FINISH TO MATCH SIDEWALK, ALL
CONCRETE SHALL BE MINIMUM 3,GOO PSI AND SHALL BE MECOANICALLY MIXED - JOB SffE MIXING, HAND -MIXED CONCRETE, AND MOBILE
CONCRETE MIXERS ARE NOT ALLOWED.
- STD. PLAN - 310.2 STD. PLAN - 310.3
PUBLIC WORK5 FIRE HYDRANT ASSEMBLY APPROVEQ! PUBLIC WORKS FIDE HYDRANT ASSEMBLY APPROVE&
*d� ,, DEPARTMENT JT SHEAR BLOCK � � -� e� W2o 3 DEPARTMENT PAVEMENT MARKER 1 I
�,�. omijam DATE
I okJPc Munn Amn.,..
FIRE HYDRANT ASSEMBLY SHEAR BLOCK
MIT
FIRE HYDRANT ASSEMBLY PAVEMENT MARKER
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W-438810