P1584 Culvert X-ing Exhibit.pdf

LEGEND
CLASS II RIP RAP COUNTERSUNK 1.5' IN STREAM BED, NOT EXCEED
ORIGINAL STREAM BED ELEVATION, SUPPLEMENT WITH CLASS I RIP RAP
TO FILL VOIDS
PERMANENT STREAM/WETLAND IMPACTS
® TEMPORARY STREAM/WETLAND IMPACTS (38 LF/0.006AC)
JURISDICTIONAL FEATURE BOUNDARY
— — TEMPORARY FLEXIBLE PUMP HOSE
IMPERVIOUS DIKE
■ BYPASS PUMP
• SILT BAG OUTFALL
RIP RAP INSTALLATION DETAIL
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OUTLET W/O DITCH
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CLASS V RIP RAP
CLASS I RIP RAP
CLASS V RIP RAP
CLASS I RIP RAP
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18"
3
10
9
4
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24"
5
14
15
7
15
3
11
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12
30"
8
21
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16
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17
36"
11
28
29
15
30
7
22
16
10
23
42"
15
37
1 39
20
39
1 10
28
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13
30
48"
-
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26
50
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17
38
54"
60
33
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36
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60"
73
40
75
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56
66"
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1 32
1 67
72"
102
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NUTE:
FOR CALCULATION PURPOSES
CLASS 'BRIP RAP --- -- --
CLASS I RIP RAP =
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PLAN
D SLOPE 111:1 OR FLATTER
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FILTER FABRIC
SECTION A -A
PIPE OUTLET WITH DITCH
H= RIP RAP TO TOP OF PIPE (MAX. H = D + T)
T= 15" CLASS I RIP RAP, UNLESS OTHERWISE SHOWN ON PLANS
T= 12, CLASS 'B' RIP RAP, UNLESS OTHERWISE SHOWN ON PLANS
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PIPE OUTLET WITHOUT DITCH
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STREAM DIVERSION AND PUMP AROUND GENERAL NOTES
1. ALL STREAM WORK TO BE PERFORMED "IN THE DRY" OUT OF STREAM FLOW BY
PUMP -AROUND.
2. CONTRACTOR SHALL USE A "SILENT PUMP" FOR All PUMP -AROUND WORK ASSOCIATED WITH
THIS PROJECT.
3. IMPERVIOUS DIKES OR COFFER DAMS ARE TO BE USED TO ISOLATE WORK FROM STREAM
FLOW.
4. MAINTENANCE OF STREAM FLOW OPERATIONS SHALL BE INCIDENTAL TO THE WORK. THIS
INCLUDES PUMPS AND HOSES.
5. GRADED STREAM BANKS SHALL BE STABILIZED, WITH MATTING, PRIOR TO PREDICTED RAIN FALL
EVENTS, UNLESS ALL RAIN EVENT FLOW CAN BE PUMPED AROUND FOR PREDICTED EVENT.
6. PUMPS AND HOSES SHALL BE SUFFICIENT SIZE TO DEWATER THE WORK AREA.
P1584 PARACHUTE TOWER ROAD
72" CULVERT EXTENSION
20'
TOP OF BANK O
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TOP OF BANK
SEQUENCE OF CONSTRUCTION FOR TYPICAL STREAM WORK AREA
GRAPHIC SCALE IN FEET
0 25 50 100
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1. CONTRACTOR SHALL DETERMINE A PROPOSED SIZE AND LOCATION OF GEOTEXTILE
DEWATERING SILT BAG FOR APPROVAL BY THE ENGINEER PRIOR TO INSTALLATION.
2. INSTALL GEOTEXTILE DEWATERING SILT BAG, AS APPROVED.
3. INSTALL BYPASS PUMP AND DEWATERING PUMP AND NECESSARY TEMPORARY FLEXIBLE HOSE.
CONNECT DEWATERING PUMP TO GEOTEXTILE DEWATERING BAG.
4. PLACE UPSTREAM IMPERVIOUS DIKE AND COFFER DAMS TO ISOLATE THE WORK AREA. BEGIN
BYPASS PUMPING FOR STREAM PUMP AROUND OPERATION.
5. PLACE DOWNSTREAM IMPERVIOUS DIKE FOR STREAM PUMP AROUND OPERATION. BEGIN
DEWATERING THE ISOLATED WORK AREA. AREA TO BE DEWATERED SHALL BE EQUAL TO ONE
DAY'S WORK.
6. PERFORM WORK WITHIN STREAM IN ACCORDANCE WITH THE PLANS.
7. EXCAVATE ANY ACCUMULATED SILT AND DEWATER BEFORE REMOVAL OF IMPERVIOUS DIKES
AND/OR COFFER DAMS. REMOVE IMPERVIOUS DIKES, COFFER DAMS, PUMPS, AND TEMPORARY
FLEXIBLE HOSE, (DOWNSTREAM IMPERVIOUS DIKES COFFER DAM FIRST),
8. PUMP AROUND AREA TO BE STABILIZED WITH MATTING AT THE END OF EACH WORK DAY. THE
IMPERVIOUS DIKE LOCATIONS AS SHOWN ON THIS SHEET ONLY SHOW THE UPPER AND LOWER
EXTENT OF WORK FOR EACH STREAM SEGMENT. THE CONTRACTOR IS RESPONSIBLE FOR
DETERMINING THE LOCATION OF THE IMPERVIOUS DIKE(S) FOR EACH DAY'S WORK
9. REMOVE SILT BAG AND PROPERLY DISPOSE OF CAPTURED SEDIMENT AND SILT BAG. STABILIZE
DISTURBED AREA WITH SEED AND MULCH.
PLAN VIEW
Kimley*Horn
March 25, 2024

LEGEND
CLASS II RIP RAP COUNTERSUNK 1.5' IN STREAM BED, NOT EXCEED
ORIGINAL STREAM BED ELEVATION, SUPPLEMENT WITH CLASS I RIP RAP
TO FILL VOIDS
PERMANENT STREAM/WETLAND IMPACTS
PROFILE - INLET CHANNEL IMPROVEMENTS
LOOKING DOWNSTREAM
EXISTING EDGE OF GRADED SHOULDER
PROPOSED ROADWAY E STREAM r ELEVATION AT CROSSING
ELEVATION AT CROSSING / 18.14' EXISTING
18.63' GROUND
r- - - - - -
I I r'
6.4
3.3
PROPOSED CULVERT TO BE BURIED MINIMUM
1 FT BELOW NATURAL STREAM BED
72" RCP
UPSTREAM EXTENSION
INV 5.80
PARACHUTE TOWER CONNECTOR ROAD CROSS SECTION STA. 302+44.82
ROAD CONSTRUCTION
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P1584 PARACHUTE TOWER ROAD
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EXISTING 72"
72" CULVERT EXTENSION
n n -7'
PROFILE & CROSS SECTION VIEW
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GRAPHIC SCALE IN FEET
0 5 10 20
Kimley)))Horn
March 25, 2024