B08_Att_(2)_LAKE_324894_Echo_Bay_Drawings_FINAL_REV_1_-_Copy.pdf
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- Solicitation number
- 140P2025R0071
About this file
These construction drawings detail the Echo Bay Launch Ramp Relocation project at Lake Mead National Recreation Area in Nevada. The comprehensive set of technical drawings, prepared for the National Park Service, covers multiple aspects of the roadway and launch ramp construction, including gravel access road sections, launch ramp design, erosion control plans, roadway cross-sections, and signage details. The project involves constructing a new launch ramp with both cast-in-place and precast concrete panel configurations, associated roadways, parking areas, and necessary infrastructure improvements.
The drawings specify technical specifications for a 33+14.96 station length project, with detailed plans for roadway geometry, aggregate base course, geotextile fabric placement, soft lakeside sediment excavation, and precise elevation profiles. The design includes multiple construction elements such as 4-6 inch aggregate base courses, slope stabilization, drainage considerations, and specific signage (including speed limit and lane keeping signs). The project appears to be designed to improve boat launch access and surrounding infrastructure, with careful consideration of the existing terrain and lake environment at Echo Bay.
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06/30/202506/30/2025
01/21/25
SHEET INDEX
SHEET SUB SHEET TITLE OF SHEET
1 COVER
2 G1 SHEET INDEX
3 G2 GENERAL NOTES, SYMBOLOGY AND ABBREVIATIONS
4 G3 ROADWAY AND PARKING AREA TYPICAL SECTIONS
5 G4 CAST-IN-PLACE LAUNCH RAMP TYPICAL SECTION
6 G5 PRECAST PANEL LAUNCH RAMP TYPICAL SECTION
7 G6 CAST-IN-PLACE LAUNCH RAMP DETAILS
8 G7 PRECAST PANEL LAUNCH RAMP DETAILS
9 C1 PROJECT OVERVIEW AND SITE SURVEY
10 C2 TRAFFIC CONTROL PLAN
11 C3 EROSION CONTROL PLAN
12 C4 EROSION CONTROL PLAN
13 C5 EROSION CONTROL DETAILS
14 C6 EROSION CONTROL DETAILS
15 C7 ROADWAY PLAN AND PROFILE
16 C8 ROADWAY PLAN AND PROFILE
17 C9 ROADWAY AND LAUNCH RAMP PLAN AND PROFILE
18 C10 PARKING AREA LAYOUT
19 C11 LAUNCH RAMP PLAN
20 C12 LAUNCH RAMP PLAN
21 C13 ROADWAY CROSS SECTIONS
22 C14 ROADWAY CROSS SECTIONS
23 C15 ROADWAY CROSS SECTIONS
24 C16 ROADWAY CROSS SECTIONS
25 C17 ROADWAY CROSS SECTIONS
26 C18 ROADWAY CROSS SECTIONS
27 C19 ROADWAY CROSS SECTIONS
28 C20 ROADWAY CROSS SECTIONS
29 C21 ROADWAY CROSS SECTIONS
30 C22 CIP LAUNCH RAMP CROSS SECTIONS
31 C23 PRECAST LAUNCH RAMP CROSS SECTIONS
32 C24 PRECAST LAUNCH RAMP CROSS SECTIONS
33 C25 SIGNING PLAN
34 C26 SIGNING DETAILS
SHEET NAMING CONVENTION
MATERIALS IN SECTION
GENERAL SYMBOLOGY
L1 C2
L2
C3 L3 C4
L4 C5
L5
AERIAL IMAGE DATE: 10/04/2022
LAKE LEVEL=~1047.2' (NAVD 88)
NPS Lake Mead Echo Bay Control Point Table Nevada East State Plane Coordinates (2701) NAD83(CORS96)(EPOCH 2002) US Foot Definition NAVD 88 Elevations
Point Northing Easting Elevation Description
32* 26815465.821 998958.415 1229.50 Found ECHO-2: 1ins DEA Red Plastic Cap overlooking old ramp, south of end of chainlink fence, north of fish clean station
33 26812431.057 1003501.920 1109.82 Set RPA RPC 35ft W of TBC, on small flat on ridge overlooking ramp area
34 26812392.972 1003567.838 1097.63 Set Nail and washer 91ft in concrete seam, 3.5ft NE of TBC
35 26812084.695 1004619.610 1106.10 Set RPA RPC 955ft SE of SE corner Helicopter Pad, 70ft S of E-W road near top of point
36 26812034.676 1005320.522 1097.00 Set RPA RPC 700ft E of CP 35, on edge of bluff overlooking potential ramp locations, 63ft S of E-W road
Metadata
Survey Performed by Robert Peccia and Associates - September 2020 and October 2022 Trimble R8-2, R8-4, R12i GPS
Control primarily established with GPS RTK methods:
Held CP 32 NPS provided coordinates NEZ
CP 33 and 34 were surveyed and checked using GPS RTK methods
Nevada East State Plane Coordinates (2701) NAD83(CORS96)(EPOCH 2002) US Foot Definition, NAVD88 elevations all as provided by NPS
NAVD 88 Elevations of mapping were computed using Geoid03
RPA RPC - Set 5/8"x24" long rebar with 1 1/4" Red Plastic Cap marked "RPA CONTROL"
RPC - Red Plastic Cap
YPC - Yellow Plastic Cap
NGS - National Geodetic Survey
*Not shown on this sheet
M
AT
CH
L
IN
E
ST
A.
8+
MATCH LINE STA. 2
6+
(SEE SHEET C4)
M
AT
CH
L
IN
E
ST
A.
8+
LEGEND:
A
TC
H
L
IN
E
ST
A . 2
6+
(S
EE
S H
EE
T
C 3)
EC
HO
B
AY
LEGEND:
Flow
C
L1 C2
L2
C3
L3
C4
C4
M
AT
CH
L
IN
E
ST
A.
8+
(S
EE
S
HE
ET
C
8)
C4
C4
L4
C5
L5
M
AT
CH
L
IN
E
ST
A.
8+
(S
EE
S
HE
ET
C
7)
MATCH LINE STA. 2
6+
(SEE SHEET C9)
PARKING AREA LAYOUT
(SEE SHEET C10)
L5
A
TC
H
L
IN
E
ST
A . 2
6+
(S
EE
S H
EE
T
C 8)
LAUNCH RAMP PLAN
(SEE SHEETS C11 AND C12)
C1
C2 C3
C4
C5
C6
TC
H
L
IN
E
ST
A . 3
0+
.3
(S
EE
S H
EE
T
C
LAUNCH RAMP QUANTITIES
CLIN #
TOTAL EXCAVATION
(CY)
EMBANKMENT
(CY)
BASE COURSE
(CY)
RIPRAP
(CY)
2 1,754 121 971 67
3 307 0 612 29
4 478 0 398 31
5 788 0 415 29
TC
H
L
IN
E
ST
A . 3
0+
.3
(S
EE
S H
EE
T
C
LAUNCH RAMP QUANTITIES
CLIN #
TOTAL EXCAVATION
(CY)
EMBANKMENT
(CY)
BASE COURSE
(CY)
RIPRAP
(CY)
6 604 0 225 29
7 393 0 264 29
8 309 0 466 21
9 520 0 579 39
10+50.00
10+75.00
11+00.00
11+25.00
11+50.00
11+75.00
12+00.00
12+25.00
12+50.00
12+75.00
13+00.00
13+25.00
13+50.00
13+75.00
14+00.00
14+25.00
14+50.00
14+75.00
15+00.00
15+25.00
15+50.00
15+75.00
16+00.00
16+25.00
16+50.00
16+75.00
17+00.00
17+25.00
17+50.00
17+75.00
18+00.00
18+25.00
18+50.00
18+75.00
19+00.00
19+25.00
19+50.00
19+75.00
20+00.00
20+25.00
20+50.00
20+75.00
21+00.00
21+25.00
21+50.00
21+75.00
22+00.00
22+25.00
22+50.00
22+75.00
23+00.00
23+25.00
23+50.00
23+75.00
24+00.00
24+25.00
24+50.00
24+75.00
25+00.00
25+25.00
25+50.00
25+75.00
26+00.00
26+25.00
26+50.00
26+75.00
27+00.00
27+25.00
27+50.00
27+75.00
28+00.00
28+25.00
28+35.00
28+35.0028+35.00
28+50.00
28+75.00
28+94.00
29+00.00
29+25.00
29+50.00
29+75.00
30+00.00
30+25.00
30+50.00
30+75.00
31+00.00
31+25.00
31+50.00
31+75.00
32+00.00
32+25.00
32+50.00
32+75.00
33+00.00
33+14.96
ATCH LINE STA. 17+20
M
AT
CH
L
IN
E
ST
A.
7+
READY
LANE
KEEP
RIGHT
WIPEDOWN
LANE
KEEP RIGHT
WIPEDOWN
LANE
KEEP RIGHT
WIPEDOWN
LANE
KEEP RIGHT
R2-1 (25mph) 24" x 30"
R2-1 (15 mph) 24" x 30"
M6-3 21" x 15"
RS-054
24" x 24"READY
LANE
KEEP
RIGHT
WIPEDOWN
LANE
KEEP RIGHT
SPECIAL
24" x 30"
SPECIAL
30" x 24"
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