Attachment_2_-_CRS_Civil_Engineering_Plans.pdf

PDF 8 MB Posted Apr 17, 2025

Attached to: D-B GAOA CAHUILLA RANGER STATION REPLACEMENT Federal contract opportunity
Solicitation number: 140L0625R0007
Issued by: Department of the Interior Bureau of Land Management National Office

About this file

Written by GovTribe AI · Apr 18, 2025

This document is a comprehensive set of civil engineering plans for the Cahuilla Ranger Station replacement project located at 4500 Gecko Road in Brawley, California, prepared for the Bureau of Land Management. The plans include detailed drawings covering multiple aspects of site development, including civil site planning, grading and drainage, demolition, utility infrastructure, fencing, landscaping, and irrigation.

Key elements of the project include constructing a new ranger station building, relocating and installing a fuel station with two tanks, installing a single module restroom, creating secure parking areas, implementing stormwater management systems (including a dry well), establishing new utility connections (water, sewer, electrical), and constructing an 8-foot high chain link security fence with barbed wire. The site design incorporates native landscaping with local plant species like Blue Palo Verde, Honey Mesquite, and Creosote Bush, and includes provisions for erosion control, irrigation, and site accessibility. The plans are dated March 17, 2023, and represent the final construction documents revision.

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Attch_17_A0002_CRS_Statement_of_Work_-_REV_0002.pdf	PDF	May 22, 2025
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GECKO RD

CAT D8

TR310

D U

M P

T R

U C

S E

M I

B O

R A

25'TRAILER

REST RM

XXXXXXXXXXXXXX

X X

XXXXXXXXXXXXX

XXX

XXXXX

CARPOOL

D D

PARKING

PARKING NO PARKING

X X

XXXX

X X

X X X X X X X X X

X X

(230.0)

(215.0)

(210.0)

(205.0)

(225.0)

(215.0)

(220.0)

(210.0)(215.0)

(22 0.0

(225.0)

(220.0)

N: 1935465.3118 E: 6891998.4344

N: 1935543.3438 E: 6891951.4537

N: 1935553.8674 E: 6891968.9290

N: 1935587.9905 E: 6891948.3789

N: 1935513.3844 E: 6892077.7462N: 1935625.3113

E: 6892010.3530

C A

A B

B CC

B A

C A

B A

B C

C B

A B

A C

A B

B B

C A

B C

A B

B C

C B

B C

A B

A C

B A

B C

TREES CODE BOTANICAL NAME COMMON NAME SIZE CONTAINER QTY DETAIL REMARKS

PAR FLO Parkinsonia florida Blue Palo Verde 24" Box 3

PRO GLA Prosopis glandulosa Honey Mesquite 24" Box 3

B C

A C

N: 1935487.9031 E: 6892091.9239

N: 1935487.3452 E: 6892159.1243

N: 1935332.3930 E: 6892251.5706

N: 1935220.1509 E: 6892111.0818

N: 1935291.4714 E: 6892272.2282

N: 1935269.8330 E: 6892270.0470

N: 1935465.3118 E: 6891998.4344 N: 1935465.3118 E: 6891998.4344

N: 1935461.7484 E: 6892048.4892

N: 1935853.3840 E: 6891935.4790

N: 1935547.7812 E: 6891913.7828

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SHEET ID

D R

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-2

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R E

-1 7-

CS101

N (B

A S

E B

M S

S F

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C S

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S I D

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K O

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C O

N S

O N

D O

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M E

R E

1"=30'

0 60 FT.30

1 CAHUILLA RANGER STATION BUILDING

2 FUEL STATION (TWO RELOCATED TANKS) WITH CANOPY

3 SINGLE MODULE RESTROOM (RELOCATED)

4 EXISTING WATER WELL

5 PAD-MOUNT ELECTRICAL TRANSFORMER

6 SEPTIC TANK (BUILDING LEACH FIELD SYSTEM)

7 DRY HYDRANT

8 2,000 GAL UNDERGROUND WATER TANK FOR DRY HYDRANT

9 STORMWATER DRY WELL

10 FLAG POLE (RELOCATED)

11 MONUMENT SIGN (RELOCATED CAHUILLA RANGER STATION

SIGN)

12 SCREEN WALL

13 8'-0" HIGH CHAIN LINK FENCE WITH 3-STRAND BARBED WIRE

14 24'-0" WIDE MANUAL DOUBLE-LEAF SWING GATE

15 STORMWATER INLET BASIN

16 16'-0" WIDE MANUAL SINGLE-LEAF SWING GATE

17 PEDESTRIAN SECURITY GATE

18 LANDMARK PEDESTAL WITH PLAQUE (RELOCATED)

19 MAIL BOX (RELOCATED)

EXISTING

COMMUNICATION

BUILDING

CAHUILLA RANGER STATION

GECKO ROAD

NEW ASPHALT CONCRETE PAVEMENT (5"AC/6"AB)

NEW CONCRETE PAVEMENT (WALK: 4"PCC/4"AB; DRIVE: 8"PCC/6"AB)

NEW LANDSCAPING OR UNIMPROVED (SEE LANDSCAPE PLANS)

EXISTING ASPHALT CONCRETE PAVEMENT TO REMAIN

UNPAVED/CRUSHED MISCELLANEOUS BASE (CMB; RECYCLED AC/PCC)

NEW / REUSED RIP RAP

CONSTRUCTION LIMITS

TYP

814.19'

25.00'

28.57'

20.00'

70.23'280.60'

.0 0'

0'45 .0

.5 9'

LEGEND SHEET KEYNOTES

E1 CIVIL SITE PLAN - BASE BID

1" = 30'-0"

R35.00'

R30.00'R26 .0

R26 .00

R3 5.

133.17'

149.44'

32.44' 117.00'

19.16' 144.00'

32.43'

.0 0'

5.44'72.00' 8.20'

OVERHANG (TYP)

R50.0'

R35.00'

R25.00'

R15.00'

20.00' 119.99'

1416 13

19.33'

CANOPY COLUMN

CANOPY OVERHANG

PLAN

NORTH

18 19

26.00'

10.00'

27.00'

381.42'130.28'4400.80'19.25'

122.96' 84.35' 85.34' 25.00' 2460.04' 27.71' 3°'

94°'

R20 .00

13 NO BARBED

WIRE

CONTROL

POINT 2001

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ASPHALT ROAD

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BUILDING

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GUY

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DIRT

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PLANT SCHEDULE

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EXP. 12-31-24

AutoCAD SHX Text No. 60573

CAT D8

TR310

D U

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U C

S E

M I

B O

R A

25'TRAILER

REST RM

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X X

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XXX

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CARPOOL

D D

PARKING

PARKING NO PARKING

X X

XXXX

X X

X X X X X X X X X

X X

GECKO RD

(230.0)

(215.0)

(210.0)

(205.0)

(225.0)

(215.0)

(220.0)

(210.0)(215.0)

(22 0.0

(225.0)

(220.0)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SHEET ID

D R

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1"=30'

0 60 FT.30

1 BID OPTION 1 - STABILIZED PARKING AND DRIVE AREAS

2 BID OPTION 2 - STAND-BY GENERATOR

EXISTING

COMMUNICATION

BUILDING

CAHUILLA RANGER STATION

GECKO ROAD

BID OPTION 1 - STABILIZED PARKING AND DRIVE AREAS

CONSTRUCTION LIMITS

LEGEND SHEET KEYNOTES

E1 CIVIL SITE PLAN - BID OPTION

1" = 30'-0"

PLAN

NORTH

GENERAL NOTES

A. STABILIZER SHALL BE A MIX-IN TYPE POLYMER SOIL BINDER.

B. MIX DEPTH SHALL BE 4 INCHES.

C. PRODUCT SHALL BE:

D. CONTRACTOR SHALL INSTALL IN ACCORDANCE WITH

MANUFACTURER'S RECOMMENDATIONS.

E. STABILIZED SOIL SHALL BE INSTALLED ON NATIVE OR IMPORT

SOIL. AGGREGATE BASE AND GEOTECTILE SHALL NOT BE USED.

a. POLY PAVEMENT

b. RNR NATURAL PAVEMENT

c. OR APPROVED EQUAL

1. STABILIZED PARKING AND DRIVE AREAS:

2. IF BID OPTION 1 IS INSTALLED, CMB PRODUCED FROM CRUSHING

ON-SITE EXISTING PAVEMENTS AND CONCRETE AS INDICATED ON

CD101 SHALL BE REUTILIZED AS AGGREGATE BASE MATERIAL, OR

SHALL BE DISPOSED OF AS DEMOLITION WASTE. REUTILIZED CMB

SHALL MEET REQUIREMENTS OF SPECIFICATIONS.

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P16

P3 P3

SAW CUT

LINE (TYP)

SAW CUT

LINE (TYP)

11111111

P2 P2

P14

5 6

EXISTING TOP

OF SLOPE

EXISTING TOP

OF SLOPE

GECKO ROAD

SAW CUT

LINE (TYP)

1"=30'

0 60 FT.30

P1 PROTECT-IN-PLACE EXISTING TOWER COMPOUND

P2 PROTECT-IN-PLACE EXISTING FENCE

P3 PROTECT-IN-PLACE EXISTING ASPHALT PAVEMENT

P4 PROTECT-IN-PLACE EXISTING SURVEY CONTROL

POINT

P5 PROTECT-IN-PLACE EXISTING POWER POLE

P6 PROTECT-IN-PLACE EXISTING WATER WELL

P7 PROTECT AND RELOCATE EXISTING SINGLE

MODULE VAULT TOILET; RELOCATE TO VISITOR

PARKING AS SHOWN ON SITE PLAN DRAWING

CS101

P8 PROTECT AND RELOCATE EXISTING DUAL MODULE

VAULT TOILET; TO BE RELOCATED TO SITE

PERIMETER

P9 PROTECT AND RELOCATE EXISTING FUEL TANK;

TEMPORARILY RELOCATE TO NORTHERLY

CANOPY ADJACENT TO EXISTING 300 GALLON

CYLINDRICAL TANK; COORDINATE WITH BLM

STAFF FOR TEMPORARY LOCATION

P10 PROTECT AND RELOCATE EXISTING LANDMARK

PLAQUE; RELOCATE TO FRONT OF NEW RANGE

STATION IN NEW PEDESTAL AT BASE OF FLAG

POLE AS SHOWN ON SITE PLAN DRAWING CS101

P11 PROTECT AND RELOCATE EXISTING FLAG POLE;

RELOCATE TO FRONT OF RANGER STATION AS

SHOWN ON SITE PLAN DRAWING CS101

REMOVE EXISTING ASPHALT PAVEMENT SECTION

AND RECYCLE ON-SITE

EXISTING RIP RIP (LIMITS ASSUMED)

CONSTRUCTION LIMITS

LEGEND SHEET PROTECTION KEYNOTES

F1 DEMOLITION PLAN

1" = 30'-0"

1 REMOVE AND DISPOSE OF EXISTING 1-STORY

MODULAR BUILDING COMPLETE WITH

FOUNDATION AND RELATED APPURTENANCES

2 REMOVE AND DISPOSE OF EXISTING 1-STORY

METAL BUILDING COMPLETE WITH FOUNDATION

AND RELATED APPURTENANCES

3 REMOVE AND DISPOSE OF EXISTING 1-STORY

SINGLE WIDE MODULAR BUILDING COMPLETE

WITH FOUNDATION AND RELATED

APPURTENANCES

4 REMOVE AND DISPOSE OF EXISTING WATER

TANK SHED COMPLETE WITH FOUNDATION AND

APPURTENANCES

5 REMOVE AND DISPOSE OF CANOPY COMPLETE

WITH FOUNDATION

6 REMOVE AND DISPOSE OF EXISTING CHAN LINK

FENCE AND GATES COMPLETE WITH

FOUNDATION AND APPURTENANCES

7 REMOVE AND RECYCLE EXISTING ASPHALT

PAVEMENT AND BASE; CRUSH ASPHALT ON

SITE FOR REUSE

8 REMOVE AND DISPOSE OF EXISTING BOLLARD

9 REMOVE AND DISPOSE OF EXISTING SIGN

10 REMOVE AND DISPOSE OF EXISTING TRAILER

11 REMOVE EXISTING PAVEMENT MARKING

SHEET DEMOLITION KEYNOTES

12 REMOVE AND DISPOSE OF EXISTING PIPE

BARRIER

13 REMOVE AND DISPOSE OF EXISTING KIOSK

14 REMOVE AND RECYCLE EXISTING CONCRETE

PAVEMENT; CRUSH CONCRETE ON-SITE FOR

REUSE

15 REMOVE AND RECYCLE EXISTING CONCRETE

PAD; CRUSH CONCRETE ON-SITE FOR REUSE

16 REMOVE AND RECYCLE EXISTING CONCRETE

STAIRS WITH RAILING; CRUSH CONCRETE

ON-SITE FOR REUSE

17 REMOVE AND RECYCLE EXISTING CONCRETE

RAMP WITH RAILING; CRUSH CONCRETE

ON-SITE FOR REUSE

18 REMOVE AND DISPOSE OF EXISTING RAMP AND

DECK

1. REFER TO DRAWING CD102 FOR UTILITY DEMOLITION.

2. CONTRACTOR SHALL DIVERT 75% OF TOTAL

CONSTRUCTION AND DEMOLITION MATERIALS IN

CONFORMANCE WITH SPECIFICATION SECTION 01 74 19

CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL.

3. EXISTING RIP RAP TO BE SALVAGED FROM AREAS

RECEIVING FILL FOR REUSE ON NEW FILL SLOPES

SHOWN ON CG101. CONTRACTOR SHALL VERIFY

EXISTING LIMITS OF RIP RAP AND RIP RAP SALVAGE

LIMITS IN FIELD.

4. EXISTING RIP RAP OUTSIDE THE SALVAGE LIMITS SHALL

BE PROTECTED. CONTRACTOR MAY TEMPORARILY

RELOCATE PORTIONS OF EXISTING RIP RAP TO BE

PROTECTED, IN ORDER TO PERFORM WORK.

5. EXISTING ASPHALT CONCRETE PAVEMENT AND

CONCRETE SHALL BE CRUSHED ON-SITE FOR FOR

REUSE AS CRUSHED MISCELLANEOUS BASE (CMB).

6. CONTRACTOR SHALL MAKE EVERY EFFORT TO PROTECT

AND RELOCATE EXISTING WEATHER STATION IN

ACCORDANCE WITH OWNER REQUIREMENTS, IN ORDER

TO MAINTAIN MANDATORY CONTINUOUS OPERATION.

GENERAL NOTES

SALVAGE EXISTING

RIP RAP FOR REUSE;

SEE GENERAL NOTE 3

SALVAGE EXISTING

RIP RAP FOR REUSE;

SEE GENERAL NOTE 3

SALVAGE EXISTING

RIP RAP FOR REUSE;

SEE GENERAL NOTE 3

P12

P10 P11

P12

P15

PLAN

NORTH

P12 PROTECT AND RELOCATE EXISTING CONCRETE

PICNIC TABLE AND BENCH; RELOCATE TO VISITOR

AREA AS SHOWN IN LANDSCAPE PLAN LP101

P13 PROTECT AND RELOCATE EXISTING CAHUILLA

RANGER STATION SIGN. RELOCATE TO SCREEN

WALL NEAR FLAG POLE AND GECKO ROAD AS

SHOWN IN SITE PLAN CS101

P14 PROTECT AND RELOCATED EXISTING MAIL BOX.

RELOCATE MAIL BOX TO NEW SECURE YARD

CHAIN LINK FENCE AS SHOWN IN SITE PLAN CS101

P15 TEMPORARILY PROTECT EXISTING CONCRETE

PAD, 300 GALLON FUEL TANK, AND RELOCATED

500 GALLON FUEL TANK UNTIL THE NEW FUEL

STATION SHOWN ON CS101 HAS BEEN

COMPLETED; MOVE THE EXISTING 300 GALLON

FUEL TANK, 500 GALLON FUEL TANK, AND

APPURTENANCES TO THE NEW FUEL STATION

PRIOR TO DEMOLISHING THE EXISTING CONCRETE

PAD

P16 TEMPORARILY PROTECT THE EXISTING CANOPY

UNTIL THE NEW FUEL STATION SHOWN ON CS101

HAS BEEN COMPLETED AND THE EXISTING 300

GALLON AND 500 GALLON FUEL TANKS HAVE BEEN

MOVED TO THE NEW FUEL STATION PRIOR TO

DEMOLISHING THE EXISTING CANOPY

P13

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-2

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-1

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ASPHALT ROAD

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ASPHALT ROAD

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ASPHALT

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ASPHALT

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DIRT

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DIRT

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CANOPY

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EXISTING BUILDING

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EXISTING BUILDING

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BUILDING

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EXISTING BUILDING

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TRAILER

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TRAILER

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CANOPY

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DIRT

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DIRT

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UNDER GROUND WATER LINE NON SURVEY ASSUMED DEPTH=3'-5'

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UNDER GROUND WATER LINE NON SURVEY ASSUMED DEPTH=3'-5'

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LEACH AREA ASSUMED DEPTH=3'-5'

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SEPTIC TANK RIM EL=227.17

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CMP WATER TANK RIM EL-226.16

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WELL RIM EL= 224.95

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WATER WELL CONC EL=225.00

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RAMP

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RAMP

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DECK

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FUEL STA. W/CANOPY & FENCE

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DUAL VAULT TOILET

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P3 P3

P3 P9

U10

U11

U12

P2 P2

U12 U6

EXISTING TOP

OF SLOPE

EXISTING TOP

OF SLOPE

GECKO ROAD

1"=30'

0 60 FT.30

P1 PROTECT-IN-PLACE EXISTING TOWER COMPOUND

P2 PROTECT-IN-PLACE EXISTING FENCE

P3 PROTECT-IN-PLACE EXISTING ASPHALT PAVEMENT

P4 PROTECT-IN-PLACE EXISTING SURVEY CONTROL POINT

P5 PROTECT-IN-PLACE EXISTING POWER POLE

P6 PROTECT-IN-PLACE EXISTING WATER WELL

P7 PROTECT AND RELOCATED EXISTING SINGLE MODULE

RESTROOM; RELOCATE TO VISITOR PARKING AS SHOWN ON

SITE PLAN DRAWING CS101

P8 PROTECT AND RELOCATE EXISTING DUAL MODULE RESTROOM;

TO BE RELOCATED OFF-SITE BY BLM

P9 PROTECT AND RELOCATE EXISTING FUEL TANK; RELOCATE TO

NEW SECURE YARD AS SHOWN ON SITE PLAN DRAWING CS101

LEGEND SHEET PROTECTION KEYNOTES

E1 UTILITY DEMOLITION PLAN

1" = 30'-0"

U1 NOT USED

U2 REMOVE AND DISPOSE OF EXISTING ABOVEGROUND 1,000 GALLON WATER TANK

U3 REMOVE AND DISPOSE OF EXISTING ABANDONED UNDERGROUND WATER TANK;

SIZE AND MATERIAL UNKNOWN

U4 REMOVE AND DISPOSE OF EXISTING UNDERGROUND SEPTIC TANK; SIZE AND

MATERIAL UNKNOWN

U5 REMOVE AND DISPOSE OF EXISTING WATER LINE; SIZE AND MATERIAL UNKNOWN

U6 REMOVE AND DISPOSE OF EXISTING SEWER LINE; ASSUMED LOCATION SHOWN,

SIZE AND MATERIAL UNKNOWN

U7 REMOVE AND DISPOSE OF EXISTING LEACH FIELD DISTRIBUTION PIPING;

ASSUMED LOCATION SHOWN, SIZE AND MATERIAL UNKNOWN

U8 REMOVE AND DISPOSE OF EXISTING POWER POLE

U9 REMOVE AND DISPOSE OF EXISTING ELECTRICAL METER

U10 REMOVE AND DISPOSE OF EXISTING ELECTRICAL PANEL

U11 REMOVE AND DISPOSE OF EXISTING TELECOM PULL BOX

U12 REMOVE AND DISPOSE OF EXISTING AIR STATION AND ASSOCIATED PIPING

FROM COMPRESSOR

SHEET UTILITY DEMOLITION KEYNOTES

GENERAL NOTES

1. REFER TO DRAWING CD101 FOR SITE DEMOLITION.

2. CONTRACTOR SHALL DIVERT 75% OF TOTAL

CONSTRUCTION AND DEMOLITION MATERIALS IN

CONFORMANCE WITH SPECIFICATION SECTION 01 74 19

CONSTRUCTION WASTE MANAGEMENT AND DISPOSAL.

3. CONTRACTOR SHALL APPLY FOR PERMIT WITH IMPERIAL

COUNTY ENVIRONMENTAL HEALTH FOR REMOVAL OF

SEPTIC SYSTEM, INCLUDING LEACH FIELD, PRIOR TO

CONSTRUCTION.

4. THE EXISTENCE, LOCATION, AND CHARACTERISTICS OF

UNDERGROUND UTILITIES SHOWN ON THESE PLANS HAS

BEEN OBTAINED FROM A REVIEW OF AVAILABLE

RECORDS. NO REPRESENTATION IS MADE AS TO THE

ACCURACY OR COMPLETENESS OF SAID UTILITY

INFORMATION. THE CONTRACTOR SHALL POTHOLE OR

OTHERWISE CONFIRM CONDITIONS. IF THE CONDITIONS

DIFFER FROM THOSE SHOWN ON THE PLANS, THE

CONTRACTOR SHALL NOTIFY THE OWNER AND SHALL

NOT BEGIN THE CONSTRUCTION UNTIL THE CHANGED

CONDITIONS HAVE BEEN EVALUATED. THE CONTRACTOR

SHALL TAKE PRECAUTIONARY MEASURES TO PROTECT

THE UTILITY LINES SHOWN AND ANY OTHER LINES NOT

OF RECORD OR NOT SHOWN ON THESE PLANS.

CONSTRUCTION LIMITS

U12

PLAN

NORTH

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ASPHALT ROAD

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ASPHALT ROAD

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ASPHALT

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ASPHALT

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DIRT

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DIRT

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CANOPY

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EXISTING BUILDING

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EXISTING BUILDING

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BUILDING

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EXISTING BUILDING

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GUY

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TRAILER

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TRAILER

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CANOPY

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DIRT

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DIRT

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UNDER GROUND WATER LINE NON SURVEY ASSUMED DEPTH=3'-5'

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UNDER GROUND WATER LINE NON SURVEY ASSUMED DEPTH=3'-5'

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LEACH AREA ASSUMED DEPTH=3'-5'

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SEPTIC TANK RIM EL=227.17

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CMP WATER TANK RIM EL-226.16

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WELL RIM EL= 224.95

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WATER WELL CONC EL=225.00

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EX COMM

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RAMP

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RAMP

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DECK

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FUEL STA. W/CANOPY & FENCE

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DUAL VAULT TOILET

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P M

PORTLAND CEMENT IN CONCRETE

DRAINAGE STRUCTURES

PIPES

GENERAL STORM DRAIN NOTES

1. PRIOR TO COMMENCING CONSTRUCTION, THE CONTRACTOR

SHALL VERIFY ALL JOIN CONDITIONS, IF CONDITIONS DIFFER

FROM THOSE SHOWN ON THE PLANS, THE CONTRACTOR SHALL

NOTIFY THE ENGINEER AND SHALL NOT BEGIN THE

CONSTRUCTION UNTIL THE CHANGED CONDITIONS HAVE BEEN

EVALUATED.

2. THE CONTRACTOR SHALL FAMILIARIZE HIMSELF WITH THE

PLANS, THE SOILS AND/OR GEOLOGY REPORTS AND THE SITE

CONDITIONS PRIOR TO COMMENCING WORK.

3. SHOULD CONFLICTING INFORMATION BE FOUND ON THE PLANS,

THE CONTRACTOR SHALL NOTIFY THE ENGINEER BEFORE

PROCEEDING WITH THE WORK IN QUESTION.

4. THE EXISTENCE, LOCATION AND CHARACTERISTICS OF

UNDERGROUND UTILITIES SHOWN ON THESE PLANS HAS BEEN

OBTAINED FROM A REVIEW OF AVAILABLE RECORD DATA. NO

REPRESENTATION IS MADE AS TO THE ACCURACY OR

COMPLETENESS OF SAID UTILITY INFORMATION. THE

CONTRACTOR SHALL POTHOLE OR OTHERWISE CONFIRM

CONDITIONS. IF CONDITIONS DIFFER FROM THOSE SHOWN ON

THE PLANS, THE CONTRACTOR SHALL NOTIFY THE ENGINEER

AND SHALL NOT BEGIN CONSTRUCTION UNTIL THE CHANGED

CONDITIONS HAVE BEEN EVALUATED. THE CONTRACTOR SHALL

TAKE PRECAUTIONARY MEASURES TO PROTECT THE UTILITY

LINES SHOWN AND ANY OTHER LINES NOT OF RECORD OR NOT

SHOWN ON THESE PLANS.

5. UNDERGROUND SERVICE ALERT: BEFORE COMMENCING ANY

EXCAVATION, THE CONTRACTOR SHALL OBTAIN AN

UNDERGROUND SERVICE ALERT INQUIRY I.D. NUMBER BY

PHONING: 1-800-422-4133. TWO WORKING DAYS SHALL BE

ALLOWED AFTER THE NUMBER IS OBTAINED AND BEFORE THE

EXCAVATION IS STARTED SO THAT UTILITY OWNERS CAN BE

NOTIFIED.

6. ALL REINFORCED CONCRETE STRUCTURES FOR STORM

DRAINAGE MUST BE 4,000 POUNDS PER SQUARE INCH IN 28 DAYS

UNLESS SPECIFIED ON THE PLANS OR AS APPROVED BY THE

ENGINEER. TYPE OF PORTLAND CEMENT CONCRETE WILL BE

SHOWN ON THE PLANS OR SPECIFICATIONS.

7. ALL PIPE LENGTHS ARE HORIZONTAL PROJECTIONS UNLESS

OTHERWISE NOTED.

8. FOR ALL TRENCH AND STRUCTURE EXCAVATIONS, SHORING

SHALL BE PROVIDED TO SATISFY ALL CAL/OSHA SAFETY

REQUIREMENTS.

9. PIPE CONSTRUCTION IN FILL AREAS SHALL BE COORDINATED

WITH THE GRADING TO ENSURE THAT, WHEN THE FILL

OPERATION HAS BEEN COMPLETED AT GRADE, THERE IS A

MINIMUM OF TWO (2) FEET OF COVER ABOVE THE TOP OF PIPE.

10. THE CONTRACTOR SHALL NOTIFY THE ENGINEER AT LEAST TWO

(2) WORKING DAYS PRIOR TO COMMENCEMENT OF ANY STORM

DRAIN CONSTRUCTION.

11. ALL FILLS SHALL BE COMPACTED TO 95% RELATIVE COMPACTION

AS DETERMINED BY ASTM D 1557." ALL BACKFILL MUST BE FREE

OF VEGETATIVE MATTER.

12. ALL SURVEYING REQUIRED FOR VERTICAL OR HORIZONTAL

ALIGNMENT SHALL BE PROVIDED, OR AS NOTED IN THE PROJECT

SPECIFICATIONS.

13. PRIOR TO THE COMMENCEMENT OF CONSTRUCTION, THE

CONTRACTOR SHALL OBTAIN A PERMIT FROM THE STATE

DIVISION OF INDUSTRIAL SAFETY. A COPY OF THE PERMIT SHALL

BE KEPT ON THE JOB SITE AT ALL TIMES.

1. ALL NEW CAST-IN-PLACE STRUCTURES SHALL USE ASTM C 150

TYPE V CEMENT WITH LESS THAN 5% TRICALCIUM ALUMINATE

(C3A) CONTENT, OR TYPE II CEMENT WITH LESS THAN 8% C3A

WHEN THE SULFUR TRIOXIDE (SO3) CONTENT IS LESS THAN 3%.

CEMENT WITH C3A CONTENT UP TO 10% MAY BE USED IF THE

SO3 CONTENT DOES NOT EXCEED 2.5%.

2. THE OPTIMUM CONCRETE IS 61/2 TO 71/2 SACKS OF CEMENT PER

CUBIC YARD, AND WITH A WATER/CEMENT RATIO NOT TO

EXCEED 6 GALLONS PER SACK OF CEMENT. MAXIMUM SLUMP

SHALL NOT EXCEED 4 INCHES.

1. CONCRETE PIPE SUPPORT ACROSS TRENCHES SHALL BE IN

ACCORDANCE WITH SPPWC STANDARD PLAN 224-2.

2. TRENCH EXCAVATION AND WIDTH REQUIREMENTS SHALL BE IN

ACCORDANCE WITH POLB STANDARD PLAN U-1.

3. CARE SHALL BE TAKEN THAT THE STORM DRAIN PIPING DOES

NOT INTERFERE WITH WATER SERVICES AND SEWER LATERALS.

VERTICAL SEPARATION OF 1 FOOT AND HORIZONTAL

SEPARATION OF 3 FEET (OD TO OD) IS REQUIRED UNLESS

WRITTEN APPROVAL IS OBTAINED FROM THE ENGINEER.

4. SEWER LATERALS CROSSING OVER STORM DRAIN LINES ARE

REQUIRED TO BE ENCASED IN CONCRETE OR SUPPORTED PER

SPPWC STANDARD PLAN 224-1.

5. A MINIMUM OF 12 INCHES OF VERTICAL AND/OR HORIZONTAL

SEPARATION MUST BE MAINTAINED BETWEEN STORM DRAIN

PIPING AND GAS OR HIGH PRESSURE WATER INJECTION LINES

AND OIL LINES.

6. THE CONNECTION OF STORM DRAIN PIPE TO AN EXISTING

STORM DRAIN SHALL BE IN ACCORDANCE WITH SPPWC

STANDARD PLAN 335-2.

GEOTECHNICAL RECOMMENDATIONS

REFER TO THE SOIL REPORT TITLED "CAHUILLA RANGER STATION -

FACILITY REPLACEMENT, GEOTECHNICAL REPORT", DATED OCTOBER 5,

2020 AND DIVISION 31, SECTION 312000 FOR MORE INFORMATION.

EARTHWORK

1. SITE PREPARATION

1.1. SITE PREPARATION WILL INCLUDE THE DEMOLITION OF EXISTING

STRUCTURES, REMOVAL OF SURFACE VEGETATION, AND ANY

TRASH OR DEBRIS IN THE AREAS WHERE STRUCTURE

FOUNDATIONS WILL BE LOCATED. LOOSE, SOFT, OR WET

MATERIAL SHOULD ALSO BE REMOVED AND REPLACED WITH

COMPETENT BACKFILL. ON-SITE GRANULAR SOIL IS CONSIDERED

SUITABLE FOR RE-USE AS BACKFILL IF IT IS FREE OF

DELETERIOUS MATERIALS. SITE CLEARING, GRUBBING, AND

EARTHWORK SHOULD BE PERFORMED IN ACCORDANCE WITH

THE PROJECT SPECIFICATIONS. SUPERFICIAL VEGETATION,

ORGANIC TOPSOIL, AND DELETERIOUS MATERIAL SHOULD BE

STRIPPED AND COMPLETELY REMOVED FROM THE SITE.

2. SUBGRADE PREPARATION

2.1. TO PROVIDE A UNIFORM BEARING LAYER BELOW THE

PROPOSED FOUNDATIONS AND PAVEMENT SECTION

STRUCTURES, IT IS RECOMMENDED THAT THE SOIL WITHIN 24

INCHES BELOW THE BOTTOM OF FOOTING SHOULD BE REMOVED

AND RECOMPACTEDAND 8 INCHES BELOW THE PAVEMENT

SECTION SHOULD BE SCARIFIED. THE SOIL SHOULD BE

MOISTURE CONDITIONED TO WITHIN ±2 PERCENT OF OPTIMUM

MOISTURE CONTENT, AND RECOMPACTED TO 95 PERCENT

RELATIVE DENSITY PER ASTM D1557-09 TEST PROCEDURE.

3. FILL PLACEMENT

3.1. THE BACKFILL AND FILL MATERIALS SHOULD CONFORM WITH

THE REQUIREMENTS OF THE PROJECT SPECIFICATIONS. THE

FILL MATERIALS SHOULD BE SAND OR GRAVEL MATERIALS WITH

A LIQUID LIMIT OF LESS THAN 35, PLASTICITY INDEX OF LESS

THAN 12, AND A MAXIMUM OF 30 PERCENT FINES PASSING

75-MICROMETER SIEVE. FILL MATERIALS SHOULD BE PLACED IN

LAYERS NOT EXCEEDING 8 INCHES IN LOOSE THICKNESS,

MOISTURE CONDITIONED, AND COMPACTED TO A MINIMUM OF 95

PERCENT OF THE MAXIMUM DRY UNIT WEIGHT AS DETERMINED

IN ACCORDANCE WITH ASTM D1557-09 TEST PROCEDURE. THE

MOISTURE CONTENT OF THE FILL MATERIAL SHOULD BE WITHIN

±2 PERCENT OF THE OPTIMUM MOISTURE CONTENT.

PERMANENT FILL SHOULD BE PLACED IN A GRADIENT NO

STEEPER THAN 2H:1V (HORIZONTAL TOVERTICAL), AND

TEMPORARY FILL, SUCH AS SURCHARGE FILL, SHOULD BE

PLACED IN A GRADIENT NO STEEPER THAN A GRADIENT OF

1.5H:1V.

4. TEMPORARY EXCAVATIONS

4.1. EXCAVATIONS MAY BE EITHER SLOPED BACK OR SHORED.

EXCAVATION OF THE TEMPORARY CUT SLOPES GREATER THAN

12-INCHES IN HEIGHT SHOULD BE NO STEEPER THAN A

GRADIENT OF 1.5H:1V OR AS THE FIELD CONDITIONS DICTATE TO

PROVIDE SAFE AND STABLE THE EXCAVATIONS SHOULD NOT

EXTEND INTO THE INFLUENCE ZONE OF ADJACENT STRUCTURES

OR UTILITY LINES, UNLESS THE EXCAVATIONS ARE SHORED. IN

GENERAL, THE INFLUENCE ZONE MAY BE OBTAINED BY

PROJECTING A LINE SLOPING OUTWARD AND DOWNWARD AT

1H:1V FROM THE EDGE OF THE EXISTING STRUCTURE. ALL

TEMPORARY EXCAVATIONS SHOULD BE PERFORMED IN

ACCORDANCE WITH THE SAFETY REQUIREMENTS OF

OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA)

EXCAVATION REGULATIONS ALONG WITH LOCAL, AND STATE

REQUIREMENTS. IT IS THE RESPONSIBILITY OF THE

CONTRACTOR TO PROVIDE STABLE EXCAVATION FOR THE

TEMPORARY CUTS AT THE PROJECT SITE.

4.2. THE EVENTUAL EVALUATION OF THE SAFETY OF CONSTRUCTION

SLOPES IS THE RESPONSIBILITY OF THE CONTRACTOR AND

SHOULD BE BASED ON HIS APPROACH TO THE FIELD WORK. WE

RECOMMEND THAT THE ACTUAL SAFE INCLINATION OF THE

CONSTRUCTION SLOPES AND OTHER SAFETY PRECAUTIONS

FOR THE PROPOSED EXCAVATION BE EVALUATED AND

DETERMINED BY THE CONTRACTOR AT THE TIME OF

CONSTRUCTION.

ABBREVIATIONS

AC ASPHALT CONCRETE GRADE

BC BEGIN CURVE

EC END CURVE

FF FINISH FLOOR

FG FINISH GRADE

FL FLOW LINE

FS FINISH SURFACE

GB GRADE BREAK

INV INVERT

NG NATIVE GROUND

TG TOP OF GRATE

TP TOP OF PAD

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EXP. 12-31-24

(230.0)

(215.0)

(210.0)

(205.0)

(225.0)

(215.0)

(220.0)

(210.0)(215.0)

(22 0.0

(225.0)

(220.0)

GECKO RD

REST RM

XXXXXXXXXXXXXX

X X

XXXXXXXXXXXXX

XXX

XXXXX

D D

X X

XXXX

X X

X X X X X X X X X

X X

-1.72% D

D D

2.5%2.6%

1.3%

1.1%

7%1.7%

5% 1.3

(0.8%) (1.0%) (0.8%)

(0.9% ) (1.7%) (1.9%)

(2 .0

)(3

(2 .9

(2 .2

220.00

215.00

220.00

220.00 225.00

215.00 220.00

210.00

225.00

226.00

225.00

226.00

224.00

223.00

222.00

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226.01FG

(226.01)AC

EXISTING

COMMUNICATION

BUILDING

CAHUILLA RANGER STATION

GECKO ROAD

FINISH FLOOR = 227.02

CG101

G R

A D

A N

D D

R A

G E

M S

S F

A N

S I D

A R

C H

A C

R A

M E

, C A

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225.78FG

(225.78)AC

225.36FG

(225.36)AC

224.83FG

(224.83)AC224.74FG

(224.74)AC

226.65FG

(226.65)AC

226.49FG

(226.49)AC

227.02FF

227.00FS

227.02FF

226.83FG

227.02FF

227.00FS

227.02FF

227.00FS

227.02FF

227.00FG

227.02FF

227.00FS

227.02FF

227.00FS

225.14FG

(225.14)AC

224.35FG

(224.35)AC

(228.26)AC

JOIN

(228.21)AC

JOIN

(227.71)AC

JOIN

(227.52)AC

JOIN

3:1 SLOPE

TOE OF SLOPE;

JOIN EXIST

3:1 SLOPE

TOE OF SLOPE;

JOIN EXIST

10:1 RAMP

1 INSTALL 8" HDPE DUAL WALL CORRUGATED STORM DRAIN PIPE

WITH WATER TIGHT JOINTS.

2 INSTALL DRAIN BASIN WITH 12" SUMP PER DETAIL E1, SHEET

CG501

3 INSTALL DRY WELL PER DETAIL H16, SHEET CG501

LEGEND SHEET KEYNOTES

TOP OF SLOPE

EXIST TOP

OF SLOPE

EXIST TOP

OF SLOPE

TOP OF SLOPE

BEARINGS AND HORIZONTAL CONTROL ARE BASED ON THE

CALIFORNIA COORDINATE SYSTEM (CCS 83), ZONE VI, RELATIVE TO

THE NORTH AMERICAN VERTICAL DATUM OF 1983 (NAD83, 2011),

EPOCH 2010, USING GLOBAL POSITIONING SYSTEM (G.P.S.) TIES TO

THE FOLLOWING CONTINUOUS GPS STATION OPERATED BY THE

NATIONAL GEODETIC SURVEY:

AZYU

P500

GMPK

LOCAL CONTROL POINTS FOR THE SITE TOPOGRAPHY WERE

ESTABLISHED AS FOLLOWS:

POINT #2000, N1936114.5270, E6891778.5570, 222.124 FEET ELEVATION,

CNPT SET REBAR & CAP

POINT #2001, N1935269.8330, E6892270.0470, 227.448 FEET ELEVATION,

SET REBAR & CAP

SURVEY CONTROL

CONTROL

POINT 2001

E1 GRADING & DRAINAGE PLAN

1" = 30'-0"

EXIST TOP

OF SLOPE

3:1 SLOPE

1"=30'

0 60 FT.30

CG301 F9

CG301

F15

CG301

C :\p w _w or kd ir\ de n0

\c h2 m hi ll_ m ca m is m s\ d0

C G

-1 -0

1- .d w g

ASPHALT CONCRETE PAVEMENT (4"AC/6"AB); SEE CP101

CONCRETE PAVEMENT (8"PCC/6"AB OR 4"PCC/4"AB); SEE CP101

LANDSCAPING OR OPEN AREA (SEE LANDSCAPING PLANS)

EXISTING ASPHALT CONCRETE PAVEMENT

UNPAVED/UNTREATED; SEE CP101

NEW / SALVAGED RIP RAP; SEE CP101

EXISTING RIP RAP

CONSTRUCTION LIMITS

EXISTING CONTOUR

NEW CONTOUR999.00

(999.0)

224.08FG

223.75FG

(223.75)NG

223.93FG

223.98FS

223.98FG

224.27FS

224.27FG

224.42FS/EC

224.42FG

224.34FS

224.34FG

224.54FG

224.57FG/EC

224.98FG

225.55FG/BC

225.71FG

224.19FG

(224.10)NG

225.46FG 226.92FS

226.88FG

227.02FF

227.00FS

226.92FS

226.88FG

226.92FS

226.88FG

225.81FG

225.69FG

225.42FG

225.06FG 223.58FG

225.00FS

225.00FG 226.00FG

(226.98)AC

JOIN

(226.55)AC

JOIN

226.48FS

226.48FG

226.85FS

226.85FG

(226.39)AC

JOIN

(227.31)AC

JOIN226.95FS

226.91FG

227.02FF

227.00FS

227.02FF

227.00FS

STRUCTURE TABLE

1 DRY WELL

RIM = 223.27

INV (LINE "B") = 218.65

INV (LINE "C") = 219.25

2 DRY WELL

RIM = 222.71

INV (LINE "C") = 219.35

INV (LINE "D") = 216.27

INV (LINE "E") = 216.41

3 DRY WELL

RIM = 227.57

INV (LINE "F") = 217.75

CG102

PLAN

NORTH

226.31FS

226.60FG

226.92FS

226.88FG

226.77FG226.77FG

226.78FG (227.50)AC

JOIN

(227.44)AC

JOIN

(227.72)AC

JOIN

(227.64)AC

JOIN

224.87FG

(224.87)AC

224.25FS

224.25FG

SD LINE "C"

SD LINE "B"

SD LINE "A"

SD LINE "F"

SD LINE "D"

225.75TG

222.75INV

224.00TG

219.99INV

220.80TG

217.80INV

221.75TG

218.75INV

226.24FS/BC

226.24FG

224.25TG

221.25INV

225.77FG

225.50FG

225.77FG

SD LINE "E"

CG103

L=117' S=0.02

L=76.5' S=0.02

L=67' S=0.02

1 L=19.10' S=0.005

L=138' S=0.021

L=174.83' S=0.02

GB GB

G B

G E

209.50RIM +/-

213.07FG

(213.07)NG

210.00FG

(210.00)NG

221.00FG

(221.00)NG

223.46FG

(223.46)NG

224.10FG

225.09FG

226.31FG224.13TP

223.75FG

(223.75)NG

224.13TP

223.71FG

(223.71)NG

224.13TP

223.63FG

(223.63)NG

224.13TP

223.67FG

(223.67)NG

224.97FG

(224.97)NG

213.99FG

(213.99)NG

212.82FG

(212.82)NG

212.61FG

(212.61)NG

213.15FG

(213.15)NG

212.96FG

(212.96)NG

211.86FG

(211.86)NG

210.00FG

(210.00)NG

210.00FG

(210.00)NG

210.00FG

(210.00)NG

211.08FG

(211.08)NG

212.00FG

(212.00)NG

213.00FG

(213.00)NG

222.00FG

(222.00)NG

223.00FG

(223.00)NG

CONCRETE PAD FOR

FUTURE GENERATOR; SEE

STRUCTURAL PLANS

226.95FS

226.91FG

227.27FS

227.52FS

(227.52)AC

227.02FS

(227.02)AC

AutoCAD SHX Text

ASPHALT ROAD

AutoCAD SHX Text

BUILDING

AutoCAD SHX Text

GUY

AutoCAD SHX Text

DIRT

AutoCAD SHX Text

DIRT

AutoCAD SHX Text T

AutoCAD SHX Text W

AutoCAD SHX Text

EX COMM

AutoCAD SHX Text

EXP. 12-31-24

(225.0)

X X

XXXXXXXXXXXXXXX

X X

X X X

D2.5%

1.3%

0% 2.

1.1%

1.0% 0.5%

2.0%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SHEET ID

D R

A W

N B

D E

N E

D B

U E

D A

M ic he ls on D riv e, S ui te

Irv in e, C A

) 2

-7

) 2

-7

P lo t D at e:

C H

E C

K E

D B

S U

B M

D B

C O

A C

T N

S O

N N

S H

E E

T S

Fi le

P at h:

A R

K D

E S

C R

O N

D A

S C

H E

M A

D E

-2 8-

E S

D E

V E

M E

N T

-1

D E

N D

E V

P M

E N

-1 5-

0% D

E S

D E

V E

M E

N T

R E

S U

B M

-1 3-

O N

U C

N D

O C

U M

E N

-2 8-

0% C

O N

U C

N D

O C

U M

E N

-2 3-

0% C

O N

U C

N D

O C

U M

E N

E V

-1

A L

C O

N S

O N

D O

C U

M E

-2

A L

C O

N S

O N

D O

C U

M E

R E

-1 7-

CG102

E N

G E

D G

R A

G A

N D

D R

A G

E P

M S

S F

A N

S I D

A R

C H

A C

R A

M E

, C A

U R

E A

U O

N D

M A

N A

G E

M E

N T

P R

C T

C A

H U

R A

N G

E R

E C

K O

R D

. B R

A W

, C A

A L

C O

N S

O N

D O

C U

M E

R E

1LEGEND

BEARINGS AND HORIZONTAL CONTROL ARE BASED ON THE

CALIFORNIA COORDINATE SYSTEM (CCS 83), ZONE VI, RELATIVE TO

THE NORTH AMERICAN VERTICAL DATUM OF 1983 (NAD83, 2011),

EPOCH 2010, USING GLOBAL POSITIONING SYSTEM (G.P.S.) TIES TO

THE FOLLOWING CONTINUOUS GPS STATION OPERATED BY THE

NATIONAL GEODETIC SURVEY:

AZYU

P500

GMPK

LOCAL CONTROL POINTS FOR THE SITE TOPOGRAPHY WERE

ESTABLISHED AS FOLLOWS:

POINT #2000, N1936114.5270, E6891778.5570, 222.124 FEET ELEVATION,

CNPT SET REBAR & CAP

POINT #2001, N1935269.8330, E6892270.0470, 227.448 FEET ELEVATION,

SET REBAR & CAP

SURVEY CONTROL

E1 ENLARGED GRADING & DRAINAGE PLAN

1" = 10'-0" 1"=10'

0 20 FT.10

C :\p w _w or kd ir\ de n0

\c h2 m hi ll_ m ca m is m s\ d0

C G

-1 -0

2- .d w g

ASPHALT CONCRETE PAVEMENT (4"AC/6"AB); SEE CP101

CONCRETE PAVEMENT (8"PCC/6"AB OR 4"PCC/4"AB); SEE CP101

LANDSCAPING OR OPEN AREA (SEE LANDSCAPING PLANS)

EXISTING ASPHALT CONCRETE PAVEMENT

UNPAVED/UNTREATED; SEE CP101

NEW / SALVAGED RIP RAP; SEE CP101

EXISTING RIP RAP

CONSTRUCTION LIMITS

EXISTING CONTOUR

NEW CONTOUR999.00

(999.0)

226.14FS

226.14FG

224.31FS

224.31FG

226.31FS

226.31FG

226.24FS

226.24FG

224.71FS

226.90FS

226.86FG

226.90FS

226.86FG

226.25FS

226.21FG

226.71FS

226.71FG

226.54FS

226.50FG

226.09FS

226.09FG

226.14FS

226.14FG

226.21FS

226.17FG

226.76FS

226.72FG

226.76FS

226.76FG

226.76FS

226.76FG

226.53FS

226.53FG

226.51FS

226.51FG

226.63FS

226.63FG

226.76FS

226.76FG

226.76FS

226.76FG

226.75FS

226.75FG

227.05FS

227.05FG

PLAN

NORTH

CAHUILLA RANGER STATION

GECKO ROAD

227.02FF

227.00FS

227.00FG

227.02FS

(227.02)AC

225.75TG

226.25FG

225.88FL 226.11FL

226.25FL

226.54FS

226.54FL

227.02FF

227.00FS

227.02FF

227.00FS

227.02FF

227.00FS

227.02FF

227.00FS

227.02FF

227.00FS

227.02FF

227.00FS

FINISH FLOOR = 227.02

226.90FS

226.78FG

226.61FS

226.57FG

G B

G E

226.45FS

226.45FG

226.48FG

226.48AC

226.71FG

226.71AC

226.66FG

226.71AC

227.00FG

(227.00)AC

226.76FG

(226.76)AC

226.64FG

(226.64)AC

226.89FS

226.89FG

(226.89)AC

227.07FG

(227.07)AC

227.04FS

227.04FG

(227.04)AC

227.02FG

(227.02)AC

226.93FS

226.93FG

226.93FS

226.93FG

227.02FF

227.00FG

227.02FF

227.00FS

227.02FF

227.00FS

227.52FG

(227.52)AC

227.27FG

AutoCAD SHX Text T

AutoCAD SHX Text

EXP. 12-31-24

REST RM

D D D D D

1.5%

2.0%

0.6%

0.4%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SHEET ID

D R

A W

N B

D E

N E

D B

U E

D A

M ic he ls on D riv e, S ui te

Irv in e, C A

) 2

-7

) 2

-7

P lo t D at e:

C H

E C

K E

D B

S U

B M

D B

C O

A C

T N

S O

N N

S H

E E

T S

Fi le

P at h:

A R

K D

E S

C R

O N

D A

S C

H E

M A

D E

-2 8-

E S

D E

V E

M E

N T

-1

D E

N D

E V

P M

E N

-1 5-

0% D

E S

D E

V E

M E

N T

R E

S U

B M

-1 3-

O N

U C

N D

O C

U M

E N

-2 8-

0% C

O N

U C

N D

O C

U M

E N

-2 3-

0% C

O N

U C

N D

O C

U M

E N

E V

-1

A L

C O

N S

O N

D O

C U

M E

-2

A L

C O

N S

O N

D O

C U

M E

R E

-1 7-

CG103

E N

G E

D G

R A

G A

N D

D R

A G

E P

M S

S F

A N

S I D

A R

C H

A C

R A

M E

, C A

U R

E A

U O

N D

M A

N A

G E

M E

N T

P R

C T

C A

H U

R A

N G

E R

E C

K O

R D

. B R

A W

, C A

A L

C O

N S

O N

D O

C U

M E

R E

1LEGEND

BEARINGS AND HORIZONTAL CONTROL ARE BASED ON THE

CALIFORNIA COORDINATE SYSTEM (CCS 83), ZONE VI, RELATIVE TO

THE NORTH AMERICAN VERTICAL DATUM OF 1983 (NAD83, 2011),

EPOCH 2010, USING GLOBAL POSITIONING SYSTEM (G.P.S.) TIES TO

THE FOLLOWING CONTINUOUS GPS STATION OPERATED BY THE

NATIONAL GEODETIC SURVEY:

AZYU

P500

GMPK

LOCAL CONTROL POINTS FOR THE SITE TOPOGRAPHY WERE

ESTABLISHED AS FOLLOWS:

POINT #2000, N1936114.5270, E6891778.5570, 222.124 FEET ELEVATION,

CNPT SET REBAR & CAP

POINT #2001, N1935269.8330, E6892270.0470, 227.448 FEET ELEVATION,

SET REBAR & CAP

SURVEY CONTROL

E1 ENLARGED GRADING & DRAINAGE PLAN

1" = 10'-0" 1"=10'

0 20 FT.10

C :\p w _w or kd ir\ de n0

\c h2 m hi ll_ m ca m is m s\ d0

C G

-1 -0

3- .d w g

ASPHALT CONCRETE PAVEMENT (4"AC/6"AB); SEE CP101

CONCRETE PAVEMENT (8"PCC/6"AB OR 4"PCC/4"AB); SEE CP101

LANDSCAPING OR OPEN AREA (SEE LANDSCAPING PLANS)

EXISTING ASPHALT CONCRETE PAVEMENT

UNPAVED/UNTREATED; SEE CP101

NEW / SALVAGED RIP RAP; SEE CP101

EXISTING RIP RAP

EXISTING CONTOUR

NEW CONTOUR999.00

(999.0)

221.90FS

221.85FG

221.90FS

221.85FG

221.90FS

221.85FG

222.00FS

222.00FG

222.00FS

222.00FG

222.00FS

222.00FG

222.10FS

222.10FG

PLAN

NORTH

222.02FF

221.75TG

218.75INV

222.06FG

220.80TG

217.80INV

221.66FG

CG301

221.80FS

221.80FG

222.00FS

222.02FF

222.00FS

222.02FF

222.00FS

222.02FF

222.00FS

222.02FF

AutoCAD SHX Text

EXP. 12-31-24

(230.0)

(215.0)

(210.0)

(205.0)

(225.0)

(215.0)

(220.0)

(210.0)(215.0)

(22 0.0

(225.0)

(220.0)

GECKO RD

REST RM

XXXXXXXXXXXXXX

X X

XXXXXXXXXXXXX

XXX

XXXXX

D D

X X

XXXX

X X

X X X X X X X X X

X X

226.00

224.00

223.00

222.00

227.00

228.00

226.00

220.00215.00 210.00

225.00

220.00

215.00

220.00

215.00

-1.72%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

SHEET ID

D R

A W

N B

D E

N E

D B

U E

D A

M ic he ls on D riv e, S ui te

Irv in e, C A

) 2

-7

) 2

-7

P lo t D at e:

C H

E C

K E

D B

S U

B M

D B

C O

A C

T N

S O

N N

S H

E E

T S

Fi le

P at h:

A R

K D

E S

C R

O N

D A

S C

H E

M A

D E

-2 8-

E S

D E

V E

M E

N T

-1

D E

N D

E V

P M

E N

-1 5-

0% D

E S

D E

V E

M E

N T

R E

S U

B M

-1 3-

O N

U C

N D

O C

U M

E N

-2 8-

0% C

O N

U C

N D

O C

U M

E N

-2 3-

0% C

O N

U C

N D

O C

U M

E N

E V

-1

A L

C O

N S

O N

D O

C U

M E

-2

A L

C O

N S

O N

D O

C U

M E

R E

-1 7-

CAHUILLA RANGER STATION

GECKO ROAD

FINISH FLOOR = 227.02

CG110

E R

O S

C O

O L

M S

S F

A N

S I D

A R

C H

A C

R A

M E

, C A

U R

E A

U O

N D

M A

N A

G E

M E

N T

P R

C T

C A

H U

R A

N G

E R

E C

K O

R D

. B R

A W

, C A

A L

C O

N S

O N

D O

C U

M E

R E

TOE OF SLOPE;

JOIN EXIST

10:1 RAMP

1 INSTALL STABILIZED CONSTRUCTION ENTRANCE/EXIT (TC1)

2 INSTALL CONCRETE WASH OUT (WM8)

3 INSTALL GRAVEL BAG BERM (SE6)

4 INSTALL FIBER ROLLS (SE5)

5 INSTALL CHECK DAM (SE4)

6 INSTALL INLET PROTECTION (SE10)

CONSTRUCTION LIMITS

EXISTING CONTOUR

NEW CONTOUR

GRAVEL BAG BERM

FIBER ROLL

FLOW DIRECTION

LEGEND SHEET KEYNOTES

999.00

(999.0)

TOP OF SLOPE

TOP OF

SLOPE

EXIST TOP

OF SLOPE

EXIST TOP

OF SLOPE

TOP OF SLOPE

CONTROL

POINT 2001

K3 EROSION CONTROL PLAN

1" = 60'-0"

TOE OF

SLOPE; JOIN

EROSIONS CONTROL NOTES:

1. IN CASE OF EMERGENCY, CONTACT: NAME: ________________________ PHONE: _______________

(TO BE COMPLETED BY CONTRACTOR PRIOR TO PERMIT)

2. A STAND-BY CREW FOR EMERGENCY WORK SHALL BE AVAILABLE AT ALL TIMES DURING THE RAINY

SEASON (NOVEMBER 1 TO APRIL 15). NECESSARY MATERIALS SHALL BE AVAILABLE ONSITE AND

STOCKPILED AT CONVENIENT LOCATIONS TO FACILITATE RAPID CONSTRUCTION OF EMERGENCY

DEVICES WHEN RAIN IS IMMINENT.

3. EROSION CONTROL DEVICES SHOWN ON THIS PLAN AND/OR REQUIRED BY THE BEST

MANAGEMENT PRACTICES MAY BE REMOVED WHEN APPROVED BY THE BUILDING OFFICIAL IF THE

GRADING OPERATION HAS PROGRESSED TO THE POINT WHERE THEY ARE NO LONGER REQUIRED.

4. GRADED AREAS ADJACENT TO FILL SLOPES LOCATED AT THE SITE PERIMETER MUST DRAIN AWAY

FROM THE TOP OF SLOPE AT THE CONCLUSION OF EACH WORKING DAY.

5. ALL SILT AND DEBRIS SHALL BE REMOVED FROM ALL DEVICES WITHIN 24 HOURS AFTER EACH

RAINSTORM AND BE DISPOSED OF PROPERLY.

6. A GUARD SHALL BE POSTED ON THE SITE WHENEVER THE DEPTH OF WATER IN ANY DEVICE

EXCEEDS TWO FEET. THE DEVICE SHALL BE DRAINED OR PUMPED DRY WITHIN 24 HOURS AFTER

EACH RAINSTORM.

7. EXCEPT AS OTHERWISE APPROVED BY THE INSPECTOR, ALL REMOVABLE PROTECTIVE DEVICES

SHOWN SHALL BE IN PLACE AT THE END OF EACH WORKING DAY OR ON WEEKENDS WHEN THE

FIVE DAY RAIN PROBABILITY FORECAST EXCEEDS 50%.

8. THE PLACEMENT OF ADDITIONAL DEVICES TO REDUCE EROSION DAMAGE WITHIN THE SITE IS LEFT

TO THE DISCRETION OF THE FIELD ENGINEER/CITY INSPECTOR. ADDITIONAL DEVICES AS NEEDED

SHALL BE INSTALLED TO RETAIN SEDIMENTS AND OTHER POLLUTANTS ON SITE.

9. DESILTING BASINS MAY NOT BE REMOVED OR MADE INOPERABLE BETWEEN NOVEMBER 1 AND

APRIL 15 OF THE FOLLOWING YEAR WITHOUT THE APPROVAL OF THE INSPECTOR. EROSION

CONTROL DEVICES ARE TO BE MODIFIED, AS NEEDED, AS THE PROJECT PROGRESSES. THE DESIGN

AND PLACEMENT OF THESE DEVICES IS THE RESPONSIBILITY OF THE FIELD ENGINEER. PLANS OF

THESE CHANGES MUST BE SUBMITTED FOR APPROVAL IF REQUESTED BY THE INSPECTOR.

10. EVERY EFFORT SHOULD BE MADE TO ELIMINATE THE DISCHARGE OF NON-STORMWATER FROM

THE PROJECT SITE AT ALL TIMES.

11. ERODED SEDIMENTS AND OTHER POLLUTANTS MUST BE RETAINED ON-SITE AND MAY NOT BE

TRANSPORTED FROM THE SITE VIA SHEET FLOW, SWALES, AREA DRAINS, NATURAL DRAINAGE

COURSES, OR WIND.

12. STOCKPILES OF EARTH OR OTHER CONSTRUCTION-RELATED MATERIALS MUST BE PROTECTED

FROM BEING TRANSPORTED FROM THE SITE BY THE FORCES OF WIND OR WATER.

13. FUELS, OILS, SOLVENTS AND OTHER TOXIC MATERIALS MUST BE STORED IN ACCORDANCE WITH

THEIR LISTING AND ARE NOT TO CONTAMINATE THE SOILS AND SURFACE WATERS. ALL APPROVED

STORAGE CONTAINERS ARE TO BE PROTECTED FROM THE WEATHER. SPILLS MUST BE CLEANED UP

IMMEDIATELY AND DISPOSED OF IN A PROPER MANNER. SPILLS MAY NOT BE WASHED INTO THE

DRAINAGE SYSTEM.

14. EXCESS WASTE CONCRETE MAY NOT BE WASHED INTO THE PUBLIC WAY OR ANY OTHER DRAINAGE

SYSTEM. PROVISIONS SHALL BE MADE TO RETAIN CONCRETE WASTES ON-SITE UNTIL THEY CAN

BE DISPOSED OF AS SOLID WASTE.

15. CONTRACTORS ARE RESPONSIBLE TO INSPECT ALL EROSION CONTROL DEVICES AND BMPs ARE

INSTALLED AND FUNCTIONING PROPERLY IF THERE IS A 50% OR GREATER PROBABILITY OF

PREDICTED PRECIPITATION, AND AFTER ACTUAL PRECIPITATION.

16. TRASH AND CONSTRUCTION-RELATED SOLID WASTES MUST BE DEPOSITED INTO A COVERED

RECEPTACLE TO PREVENT CONTAMINATION OF RAINWATER AND DISPERSAL BY WIND.

17. SEDIMENTS AND OTHER MATERIALS MAY NOT BE TRACKED FROM THE SITE BY VEHICLE TRAFFIC.

THE CONSTRUCTION ENTRANCE ROADWAYS MUST BE STABILIZED SO AS TO INHIBIT SEDIMENTS

FROM BEING DEPOSITED INTO THE PUBLIC WAY. ACCIDENTAL DEPOSITIONS MUST BE SWEPT UP

IMMEDIATELY AND MAY NOT BE WASHED DOWN BY RAIN OR OTHER MEANS.

18. ANY SLOPES WITH DISTURBED SOILS OR DENUDED OF VEGETATION MUST BE STABILIZED SO AS TO

INHIBIT EROSION BY WIND AND WATER.

EROSIONS CONTROL NOTES:

19. ADD THE FOLLOWING NOTES (OR SIMILAR) TO THE PLANS TO DEFINE THE CURRENT STATE OF

CONSTRUCTION.

A. STORM DRAINS AND CATCH BASIN ARE NOT CONSTRUCTED.

B. STREETS ARE PAVED, EXCEPT AS NOTED ON THE EROSION CONTROL PLAN.

C. DRAINAGE DEVICES ARE NOT CONSTRUCTED, EXCEPT AS NOTED ON PLANS.

20. STORMWATER POLLUTION CONTROL REQUIREMENTS MUST BE INTEGRATED INTO THE EROSION

CONTROL PLANS FOR ANY CONSTRUCTION BETWEEN OCTOBER 1 AND APRIL 15.

21. BEST MANAGEMENT PRACTICES (BMPs) ARE SPECIFIED HEREON FOR THIS PROJECT TO

CONTROL STORMWATER AND OTHER RUNOFF POLLUTION FROM THE SITE DURING

CONSTRUCTION AND ARE TO BE IMPLEMENTED YEAR ROUND. THE BMPs ARE FROM THE

"CALIFORNIA STORMWATER BMP HANDBOOK" (JANUARY 2015) BY THE CALIFORNIA

STORMWATER QUALITY ASSOCIATION. EACH BMP HAS A FACT SHEET THAT DESCRIBES THE

BMP OBJECTIVES AND TARGETED CONSTITUENTS, AND EXPLAINS IMPLEMENTATION AND

INSPECTION REQUIREMENTS. THE BMPs ARE TO BE FOLLOWED PER THE FACT SHEETS UNLESS

OTHERWISE SUPERSEDED BY A NOTE ON THESE PLANS. BMP FACT SHEETS CAN BE PURCHASED

FROM CASQA AT WWW.CASQA.ORG/RESOURCES/BMP-HANDBOOKS/CONSTRUCTION.

22. THE SITE IS PRESENTLY (PRIOR TO CONSTRUCTION) PAVED WITH ASPHALT CONCRETE TO BE

REMOVED DURING CONSTRUCTION ACTIVITIES. THERE ARE NO AREAS OF VEGETATIVE COVER

OR NATIVE VEGETATION AT THE CONSTRUCTION SITE.

23. BY NECESSITY, THE ONSITE LOCATIONS OF CONSTRUCTION MATERIAL LOADING, UNLOADING

AND ACCESS; CONSTRUCTION VEHICLE AND EQUIPMENT STORAGE, CLEANING AND

MAINTENANCE; AND, TO A LESSER EXTENT WASTE STORAGE, WILL CHANGE FROM TIME TO TIME

AS WORK PROGRESSES FROM ONE AREA OF THE SITE TO ANOTHER. AS A RESULT, IT IS NOT

PRACTICAL TO SPECIFY LOCATIONS FOR THE ABOVE DESCRIBED CONSTRUCTION ACTIVITIES.

THE LOCATIONS FOR THE ABOVE ACTIVITIES CAN CHANGE AS WORK PROGRESSES BUT ONLY IF

THE FOLLOWING CONDITIONS ARE MET:

A. THE CHANGING OF SUCH LOCATIONS IS MINIMIZED TO THE EXTENT POSSIBLE, AND;

B. THE BEST MANAGEMENT PRACTICES FOR THESE ACTIVITIES ARE FOLLOWED AT EACH

LOCATION.

24. THE EROSION CONTROL PLANS AND GRADING PLANS SHOW AREAS OF SOIL DISTURBANCE, CUT

OR FILL AND THE DRAINAGE PATTERN ACROSS THE SITE, AND, (IF APPLICABLE) RELEVANT

OFFSITE DRAINAGE AREAS INCLUDING DRAINAGE PATTERN AND SLOPES ANTICIPATED AFTER

MAJOR GRADING ACTIVITIES, AND, (IF APPLICABLE) MEASURES NECESSARY TO DIVERT ONSITE

STORMWATER RUN-ON FROM OFFSITE PROPERTIES.

25. THE EROSION CONTROL PLANS AND GRADING PLANS SHOW THE CONSTRUCTION PROJECT

INCLUDING EXISTING AND PLANNED PAVED AREAS, ROADWAYS AND BUILDINGS, SITE

TOPOGRAPHY (BEFORE AND AFTER CONSTRUCTION), PROPOSED STORMWATER COLLECTION

AND DISCHARGE POINTS INCLUDING DRAINAGE AREA AND PATTERN FOR EACH STORMWATER

INLET POINT AND THE BEST MANAGEMENT PRACTICES NECESSARY TO PROTECT SUCH INLETS

FROM CONTAMINATED DISCHARGES.

26. A STORMWATER POLLUTION PREVENTION PLAN (SWPPP) SHALL BE PREPARED FOR THIS

PROJECT. THE SWPPP SHALL SPECIFY BEST MANAGEMENT PRACTICES TO CONTROL

NON-STORMWATER DISCHARGE FROM THE SITE.

27. THE GRADING PLANS SHOW POST-CONSTRUCTION MEASURES TO CONTROL STORMWATER

RUNOFF. A STORMWATER MITIGATION PLAN HAS BEEN PREPARED FOR THIS PROJECT IT

SPECIFIES THE SAME.

BEST MANAGEMENT PRACTICES (BMP) NOTES:

THE FOLLOWING BMPs FROM THE "CASQA CONSTRUCTION BMP HANDBOOK/PORTAL", MUST BE IMPLEMENTED FOR ALL CONSTRUCTION ACTIVITIES AS

APPLICABLE. BMPs FROM THE "CALIFORNIA STORMWATER BMP CONSTRUCTION HANDBOOK - JANUARY 2015" MAY BE USED IF DETAIL IS INDICATED.

ADDITIONAL MEASURES MAY BE REQUIRED IF DEEMED APPROPRIATE. BMPS IMPLEMENTED SHALL ALSO COMPLY WITH THE CALIFORNIA STORMWATER BEST

MANAGEMENT PRACTICE HANDBOOK-CONSTRUCTION ACTIVITY (2017) AND THE CALTRANS STORMWATER QUALITY HANDBOOKS, CONSTRUCTION GUIDE AND

SPECIFICATIONS (1997).

EROSION CONTROL BMPS:

EC1 - SCHEDULING - ESC1

EC2 - PRESERVATION OF EXISTING VEGETATION - ESC2

EC3 - HYDRAULIC MULCH - ESC11

EC4 - HYDROSEEDING - ESC10

EC5 - SOIL BINDERS

EC6 - STRAW MULCH - ESC11

EC7 - GEOTEXTILES AND MATS - ESC20

EC8 - WOOD MULCHING - ESC11

EC9 - EARTH DIKES AND DRAINAGE SWALES - ESC30/31

EC10 - VELOCITY DISSIPATION DEVICES

EC11 - SLOPE DRAINS - ESC32

EC12 - STREAMBANK STABILIZATION

EC13 - (RESERVED)

EC14 - COMPOST BLANKETS

EC15 - SOIL PREPARATION/ROUGHENING - ESC42

EC16 - NON-VEGETATED STABILIZATION

TEMPORARY SEDIMENT CONTROL BMPS:

SE1 - SILT FENCE - ESC50

SE2 - SEDIMENT BASIN - ESC56

SE3 - SEDIMENT TRAP - ESC55

SE4 - CHECK DAM - ESC41

SE5 - FIBER ROLLS - ESC53

SE6 - GRAVEL BAG BERM - ESC53

SE7 - STREET SWEEPING AND VACUUMING

SE8 - SANDBAG BARRIER - ESC52

SE9 - STRAW BALE BARRIER - ESC51

SE10 - STORM DRAIN INLET PROTECTION - ESC54

SE11 - ACTIVE TREATMENT SYSTEMS

SE12 - TEMPORARY SILT DIKE

SE13 - COMPOST SOCKS & BERMS

SE14 - BIOFILTER BAGS

WIND EROSION CONTROL BMPS:

WE1 - WIND EROSION CONTROL

TRACKING CONTROL BMPS:

TC1 - STABILIZED CONSTRUCTION ENTRANCE/EXIT - ESC24

TC2 - STABILIZED CONSTRUCTION ROADWAY - ESC23

TC3 - ENTRANCE/OUTLET TIRE WASH

NON-STORMWATER MANAGEMENT BMPS:

NS1 - WATER CONSERVATION PRACTICES - CD4(2)

NS2 - DEWATERING OPERATIONS

NS3 - PAVING AND GRINDING OPERATIONS

NS4 - TEMPORARY STREAM CROSSING - ESC22

NS5 - CLEAR WATER DIVERSION

NS6 - ILLICIT CONNECTION/DISCHARGE

NS7 - POTABLE WATER/IRRIGATION

NS8 - VEHICLE AND EQUIPMENT CLEANING - CA30

NS9 - VEHICLE AND EQUIPMENT FUELING - CA31

NS10 - VEHICLE AND EQUIPMENT MAINTENANCE - CA32

NS11 - PILE DRIVING OPERATIONS

NS12 - CONCRETE CURING

NS13 - CONCRETE FINISHING

NS14 - MATERIAL AND EQUIPMENT USE

NS15 - DEMOLITION ADJACENT TO WATER

NS16 - TEMPORARY BATCH PLANT

WASTE MANAGEMENT AND MATERIALS POLLUTION CONTROL BMPS:

WM1 - MATERIAL DELIVERY AND STORAGE - CA10

WM2 - MATERIAL USE - CA11

WM3 - STOCKPILE MANAGEMENT

WM4 - SPILL PREVENTION AND CONTROL - CA12

WM5 - SOLID WASTE MANAGEMENT - CA21

WM6 - HAZARDOUS WASTE MANAGEMENT

WM7 - CONTAMINATED SOIL MANAGEMENT

WM8 - CONCRETE WASTE MANAGEMENT - CA23

WM9 - SANITARY/SEPTIC WASTE MANAGEMENT

WM10 - LIQUID WASTE MANAGEMENT

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This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Jul 15, 2025.