Alameda Zone 7_PL84-99_Plans_100pct.pdf

G08 G09

G13

G14

ARROYO MOCHO CANAL

ARRO

YO

DE

LA LAG

UNA

CR

EE

K

TA

SS

AJ

AR

A

ARROYO

DEL VALLE

ALAM

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CANAL

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LINE E

LINE G

LINE K

LINE B

F11

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F13

G07

G10 G06

© 2025 Microsoft Corporation © 2025 Maxar ©CNES (2025) Distribution Airbus DS © 2025 TomTom

SOLICITATION NO.:

CONTRACT NO.:

ISSUE DATE:

San Francisco District

ALAMEDA COUNTY, CALIFORNIA

ZONE 7 FLOOD CONTROL CHANNELS

PHASE 1 (10 SITES)

PL84-99 PROJECT

W912P725B00XX

W912P725C00XX

JUNE 2025

LOCATION MAP

SCALE: 1" = 2000'

C O

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R

SH

EE

T

G-001

PROJECT

LOCATION

APPROVED BY:

ROBIN K. INABA, RA, PMP

CHIEF, ENGINEERING AND CONSTRUCTION DIVISION

PREPARED UNDER THE DIRECTION OF:

TIMOTHY W. SHEBESTA

LIEUTENANT COLONEL, DISTRICT COMMANDER AND ENGINEER

THIS PROJECT WAS DESIGNED BY THE SAN FRANCISCO DISTRICT OF

THE U.S. ARMY CORPS OF ENGINEERS. THE INITIALS OR SIGNATURES

AND REGISTRATION DESIGNATIONS OF INDIVIDUALS THAT APPEAR

ON THESE PROJECT DOCUMENTS ARE WITHIN THE SCOPE OF THEIR

EMPLOYMENT AS REQUIRED BY ER 1110-1-8152.

SIGNATURES AFFIXED BELOW INDICATE OFFICIAL RECOMMENDATION

AND APPROVAL OF DRAWINGS IN THIS SET.

SUBMITTED BY:

SON T. HA, PE, PMP

CHIEF, ENGINEERING BRANCH

VICINITY MAP

NOT TO SCALE

US Army Corps of Engineers ® US Army Corps of Engineers ®

PLEASANTON

DRAWING INDEX

SHEET NO DESCRIPTION

G-001 COVER SHEET

G-002 GENERAL NOTES

G-003 LEGEND AND ABBREVIATIONS

G-100 PROJECT SITE LOCATION AND HAUL ROUTE PLAN

G-101 HAUL ROUTE, STAGING PLAN AND CONSTRUCTION

LIMITS OF WORK

V-100 SURVEY CONTROL

C-100 PROJECT VICINITY AND KEY MAP

C-101 OVERVIEW: SITES G07, G08, G09, G13 AND G14 PLANS

C-102 OVERVIEW: SITES F11, F12, F13, G06, G10 PLANS

C-300 SECTIONS

C-500 TYPICAL REPAIR DETAILS

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

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US Army Corps of Engineers

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GENERAL NOTES

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G-002

GENERAL, SURVEY, SAFETY, AND WEATHER

1. WORK FOR THIS PROJECT IS NOTED AS "ZONE 7 FLOOD CONTROL CHANNELS PL 84-99 PROJECT." THE SCOPE OUTLINED IN THIS PLAN SET IS FOR ONE SPECIFIC GROUP (SUBSET) OF THE LARGER SCALE PROJECT. THE LARGER SCALE PROJECT CONSISTS OF A TOTAL OF 48 SITES INCLUDING: FOUR (4) SITES ON ARROYO DE LA LAGUNA (LINE B), FIVE (5) SITES ON ARROYO DEL VALLE (LINE E), TEN (10) SITES ON ALAMO CANAL/CREEK (LINE F), TWELVE (12) SITES ON ARROYO MOCHO (LINE G), SIXTEEN

(16) SITES ON SOUTH SAN RAMON CREEK (LINE J), AND ONE (1) SITE ON TASSAJARA CREEK (LINE K).

2. HORIZONTAL DATUM IS NAD 83, CALIFORNIA STATE PLANE COORDINATE SYSTEM, ZONE III U.S. FEET

(GEOID 18).

3. VERTICAL DATUM IS NAVD 88.

4. EXISTING TOPOGRAPHIC LiDAR AND AERIAL IMAGERY IS SOURCED FROM DATASET PROVIDED BY THE ALAMEDA COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT (ZONE 7 WATER AGENCY), DATE OF SURVEY IS FEBRUARY- APRIL 2023. SUPPLEMENTAL TOPOGRAPHIC SURVEY WAS

CONDUCTED BY THE U.S. ARMY CORPS OF ENGINEERS, SAN FRANCISCO DISTRICT IN FEBRUARY 2025.

SURFACE CONTOURS SHOWN ON PLANS AND SECTIONS ARE A COMPOSITE OF THESE DATASETS.

TOPOGRAPHIC CONTOURS AND AERIAL IMAGERY INDICATE THE GENERAL CONDITIONS AT TIME OF

SURVEY. SURVEYS WERE NOT PERFORMED BELOW THE WATER SURFACE AT TIME OF SURVEY. AS

SUCH, THE TOE OF SLOPE AND BOTTOM OF CHANNEL MAY NOT BE ACCURATELY SHOWN ON PLANS

AND CROSS SECTIONS. CONTRACTOR TO VERIFY IN FIELD TOP AND TOE OF SLOPE PRIOR TO

CONSTRUCTION.

5. CONTRACTOR SHALL FIELD VERIFY ALL DIMENSIONS, WORK LIMITS, AND ELEVATIONS PRIOR TO

CONSTRUCTION.

6. IF UNANTICIPATED CONDITIONS ARE ENCOUNTERED, OR DIMENSIONS/GRADES APPEAR INACCURATE, THE CONTRACTOR SHALL IMMEDIATELY BRING THE CONDITION TO THE ATTENTION OF THE

CONTRACTING OFFICER (CO) OR CONTRACTING OFFICER'S REPRESENTATIVE (COR).

7. IMMEDIATELY ON DISCOVERY OF THE NEED FOR INTERPRETATION OF THE CONTRACT DOCUMENTS, THE CONTRACTOR SHALL PREPARE AND SUBMIT A REQUEST FOR INFORMATION (RFI) FOR

CLARIFICATION VIA RMS (SPEC. SECTION 01 45 00.15 10, RESIDENT MANAGEMENT SYSTEM

CONTRACTOR MODE (RMS CM)).

8. RIGHT BANK AND LEFT BANK ARE REFERENCED LOOKING DOWNSTREAM.

9. CONSTRUCTION-RELATED PERMITS: PRIOR TO GRANTING ACCESS AND RIGHTS TO OCCUPY

PREMISES, CONTRACTOR MUST SUBMIT WORK PLANS FOR REVIEW AND APPROVAL, AS DESCRIBED IN SPECIFICATIONS, AND OBTAIN REQUIRED PERMITS. CONTRACTOR MUST COMPLY WITH CONDITIONS

OF ENCROACHMENT PERMITS FOR LAYDOWN /STAGING AREAS AND ACCESS LOCATIONS.

10. CONTRACTOR SHALL BECOME FAMILIAR WITH AND OBEY WORK REGULATIONS INCLUDING SAFETY, FIRE, TRAFFIC, AND SECURITY REGULATIONS. KEEP WITHIN THE LIMITS OF THE WORK AND AVENUES

OF INGRESS AND EGRESS. REFERENCE SPEC. SECTION 01 35 26, GOVERNMENTAL SAFETY

REQUIREMENTS, AND COMPLY WITH CORPS EM 385-1-1 FOR SAFETY REQUIREMENTS TO INCLUDE

PERSONAL PROTECTIVE EQUIPMENT.

11. REGULAR WORKING HOUR RESTRICTIONS ARE PROVIDED IN SPECIFICATIONS, WORK OUTSIDE OF

REGULAR WORKING HOURS AND ON FEDERAL HOLIDAYS REQUIRE WRITTEN APPROVAL FROM THE

CONTRACTING OFFICER.

12. ALL IN-WATER CONSTRUCTION SHALL BE PERFORMED FROM JUNE 15 TO OCTOBER 15, UNLESS

APPROVED BY THE CONTRACTING OFFICER.

13. WORK SHALL NOT BE PERFORMED ON DAYS THE NATIONAL WEATHER SERVICE FORECASTS 0.1 INCH OR MORE OF RAIN IN 24 HOURS. AHEAD OF THESE RAIN EVENTS AND NO LATER THAN THE DAY PRIOR, THE CONTRACTOR SHALL IMPLEMENT A WORK STOPPAGE PLAN. WORK STOPPAGE INCLUDES THE

COMPLETION OF WORK OR PLACEMENT OF TEMPORARY MEASURES FOR PARTIALLY COMPLETED

WORK. TEMPORARY MEASURES INCLUDE EROSION CONTROL, SEDIMENT CONTROL, AND OTHER

PROTECTIVE MEASURES. TEMPORARY MEASURES SHALL BE STORED ONSITE AND AVAILABLE AT ALL

TIMES. WORK STOPPAGE ALSO INCLUDES THE REMOVAL OF DIVERSIONS WHEN THE NATIONAL

WEATHER SERVICE FORECASTS HIGH WATER OR WHEN DIRECTED BY THE CONTRACTING OFFICER.

14. RAIN THAT LEADS TO THE REQUIREMENT TO REMOVE WATER DIVERSIONS SHALL BE CONSIDERED UNANTICIPATED CONDITIONS. DAMAGE TO PROJECT CONSTRUCTION WORK SUSTAINED BECAUSE OF

A RAIN EVENT SHALL BE CONSIDERED UNANTICIPATED.

UTILITIES, SPILLS, AND RELATED

15. CONTACT UNDERGROUND SERVICE ALERT NORTH AT TEL. 811 OR 800-642-2444 A MINIMUM OF 2 WORKING DAYS PRIOR TO THE START OF EXCAVATION TO MARK EXISTING UTILITIES. UTILITIES THAT INTERFERE WITH WORK ARE TO BE PROTECTED AS REQUIRED AND KEPT IN SERVICE AT ALL TIMES.

16. IMMEDIATELY NOTIFY THE CONTRACTING OFFICER AFTER ALL SPILLS, REGARDLESS OF QUANTITY, INCLUDING ALL PERSONNEL EXPOSURES. THE CONTRACTOR SHALL SUBMIT A WRITTEN NOTIFICATION

NO LATER THAN 2 CALENDAR DAYS AFTER THE INITIAL NOTIFICATION.

17. SPILL KITS SHALL BE STORED AT EACH REPAIR SITE AND LAYDOWN/STAGING AREA AND AVAILABLE AT

ALL TIMES.

18. LAYDOWN/STAGING AREAS WITHIN 100 FEET OF WATERWAYS SHALL INCLUDE SECONDARY

CONTAINMENT FOR VEHICLE AND EQUIPMENT FUELING AND MAINTENANCE.

19. VEHICLE AND EQUIPMENT FUELING AND MAINTENANCE MAY TAKE PLACE AT WORK SITES OR

LAYDOWN/STAGING AREAS WHICH MUST INCLUDE CONTAINMENT (PROTECTIVE) MEASURES TO

PROTECT AGAINST POTENTIAL DISCHARGE OF FLUIDS TO WATERWAYS.

20. VEHICLE AND EQUIPMENT SHALL BE CHECKED BEFORE THEY ARE USED FOR THE FIRST TIME, AND THEN DAILY FOR FUEL, OIL, AND HYDRAULIC FLUID LEAKS OR OTHER PROBLEMS THAT COULD RESULT

IN SPILLS OF TOXIC MATERIALS.

21. VEHICLE, EQUIPMENT, MATERIAL, AND TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

SHALL BE REMOVED FROM THE REPAIR SITE WHEN WORK IS COMPLETE.

22. CONSTRUCTION WATER SHALL BE PURCHASED FROM AN APPROVED SOURCE OR BROUGHT IN FROM

OFF-SITE; CONSTRUCTION WATER MAY NOT BE TAKEN FROM WATERWAYS.

SITE ACCESS AND RELATED

23. MARK CONSTRUCTION LIMITS OF WORK IN THE FIELD AND HAVE CONSTRUCTION LIMITS OF WORK

APPROVED BY THE CO OR COR PRIOR TO THE START OF WORK.

24. ONLY OPERATE EQUIPMENT ON APPROVED ACCESS ROUTES AND WITHIN CONSTRUCTION WORK

LIMITS INDICATED ON THE DRAWINGS.

25. IN ALL AREAS WHERE PROJECT RELATED ACTIVITIES OCCUR, THE CONTRACTOR SHALL RETURN THE

EASEMENTS, ACCESS POINTS AND PROVIDED LAY-DOWN/STAGING AREAS TO THEIR ORIGINAL

PRE-PROJECT CONDITIONS PRIOR TO VACATING THE SITE UNLESS NOTED OTHERWISE HEREIN AS AN

ALLOWABLE SOIL SPOILS/GREEN WASTE DISPOSAL SITE.

26. DURING THE COURSE OF THE PROJECT, THE COUNTY OF ALAMEDA, PROPERTY OWNERS, AND ITS AUTHORIZED REPRESENTATIVES SHALL BE PROVIDED ACCESS TO THE COUNTY EASEMENTS, COUNTY ACCESS POINTS AND COUNTY-PROVIDED LAY-DOWN/STAGING AREAS AT ALL TIMES IN ORDER TO

CONDUCT THE COUNTY'S NORMAL BUSINESS ACTIVITIES.

27. GRAVEL MAINTENANCE ROADS THAT BECOME RUTTED, CONTAMINATED, CRUSHED OR OTHERWISE DAMAGED BY PROJECT CONSTRUCTION SHALL BE REPAIRED BY CONTRACTOR AT THEIR EXPENSE.

28. ASPHALT CONCRETE (AC) ROADWAY(S) SHALL BE PROTECTED FROM DAMAGE BY THE CONTRACTOR

TO THE MAXIMUM EXTENT PRACTICABLE IN ORDER TO PERFORM THE WORK.

29. CONTRACTOR SHALL PROVIDE TRACK-OUT CONSTRUCTION GRATES AT ALL EXITS TO PUBLIC ROADS

AS REQUIRED TO LIMIT TRACKING OF MUD AND DEBRIS OFF THE SITE.

HABITAT PROTECTION, ENVIRONMENTAL PERMITS, AND COMPLIANCE

30. PERFORM ALL WORK IN A MANNER THAT COMPLIES WITH ALL PERMITS AND IS PROTECTIVE OF THE ENVIRONMENT, INCLUDING AIR AND WATER QUALITY, WILDLIFE, VEGETATION AND HUMAN HEALTH AND IN ACCORDANCE WITH SPEC. SECTION 01 57 19 AND RELATED. CONTRACTOR SHALL INSTALL AND MAINTAIN BEST MANAGEMENT PRACTICES (BMPs) AS REQUIRED BY ALL PERMITS. IF BMPs ARE

DAMAGED, RESTORE/REPLACE TO CONTINUE PROTECTION TO THE ENVIRONMENT.

31. THE CONTRACTOR IS RESPONSIBLE FOR NOTIFYING THE CONTRACTING OFFICER 72 HOURS IN

ADVANCE OF PERFORMING BIOLOGICAL SURVEYS TO ALLOW SUFFICIENT TIME FOR GOVERNMENT

ENVIRONMENTAL PLANNER TO ALSO ATTEND THE SURVEY.

32. THE CONTRACTOR-PROVIDED BIOLOGIST SHALL RESURVEY AREAS OF DISTURBANCE WHENEVER A

LAPSE IN CONSTRUCTION ACTIVITY OF TWO WEEKS OR GREATER HAS OCCURRED.

33. IF SENSITIVE HABITAT IS IDENTIFIED BY THE BIOLOGICAL MONITOR, THE CONTRACTOR SHALL FENCE

AND USE SIGNAGE TO CLEARLY DENOTE ALL AREAS THAT ARE NOT TO BE DISTURBED BY

CONSTRUCTION ACTIVITIES.

34. SURVEYS FOR THE PRESENCE OR THE ABSENCE OF CALIFORNIA RED-LEGGED FROGS ARE REQUIRED WITHIN THE CONSTRUCTION LIMITS OF WORK. BIOLOGISTS' ACCEPTABLE QUALIFYING EXPERIENCE

FOR CALIFORNIA RED-LEGGED FROG MUST BE EQUIVALENT TO, OR EXCEED, THE MINIMUM

QUALIFICATIONS FOR OBTAINING A SECTION 10(A)(1)(A) RECOVERY PERMIT FOR THE SPECIES AND BE

APPROVED BY THE CONTRACTING OFFICER. DAILY WORK MAY COMMENCE IN THE ABSENCE OF

CALIFORNIA RED-LEGGED FROGS. IF CALIFORNIA RED-LEGGED FROGS ARE FOUND, IMMEDIATELY

NOTIFY THE CONTRACTING OFFICER OR THE CORPS' ENVIRONMENTAL MANAGER.

35. BEFORE THE START OF IN-WATER CONSTRUCTION ACTIVITIES THAT MAY CAUSE ELEVATED

TURBIDITY, BACKGROUND NEPHELOMETRIC TURBIDITY UNIT (NTU) LEVELS MUST BE ESTABLISHED

PER MEASUREMENTS TAKEN DAILY PRIOR TO WORK COMMENCEMENT. NTU LEVELS SHALL BE

MONITORED UPSTREAM OF PROJECT ACTIVITIES (I.E., BACKGROUND) AND DOWNSTREAM OF THE

IN-STREAM CONSTRUCTION CONSISTENT WITH WATER QUALITY PERMITTING REQUIREMENTS AND

SPEC. SECTION 01 57 19. IF TURBIDITY MONITORING MEASUREMENTS EXCEED ALLOWABLE LEVELS

PER APPLICABLE ENVIRONMENTAL PERMITS, OR AN EXCEEDANCE OF THE BACKGROUND NTUS BY

20%, WHICHEVER IS MORE STRINGENT, REMEDIAL ACTIONS WILL BE IMPLEMENTED TO REDUCE AND

MAINTAIN TURBIDITY AT OR BELOW COMPLIANCE THRESHOLD LEVELS.

36. IF DEWATERING NEEDS ARE IDENTIFIED, DEWATERING AND DIVERSIONS SHALL BE DESIGNED TO HAVE THE MINIMUM NECESSARY IMPACTS TO WATERS OF THE U.S. AND INSTALLED SUCH THAT DIVERSIONS

DO NOT CAUSE SEDIMENTATION, SILTATION, OR EROSION UPSTREAM OR DOWNSTREAM OF THE

PROJECT AREA. DEWATERING AND DIVERSIONS SHALL BE IMMEDIATELY REMOVED UPON

COMPLETION OF WORK, AND IN SUCH A WAY AS TO NOT CAUSE A SEDIMENT DISCHARGE NOR

EROSION.

37. THE WORK AREA WILL BE CLEARED OF CENTRAL CALIFORNIA COASTAL STEELHEAD BEFORE IN-WATER WORK OR DEWATERING. IN-WATER WORK MAY COMMENCE IN THE ABSENCE OF STEELHEAD. BIOLOGISTS' ACCEPTABLE QUALIFYING EXPERIENCE FOR CALIFORNIA COASTAL STEELHEAD MUST BE EQUIVALENT TO, OR EXCEED, THE MINIMUM QUALIFICATIONS FOR OBTAINING A SECTION 10(A)(1)(A) RECOVERY PERMIT FOR THE SPECIES AND BE APPROVED BY THE CONTRACTING OFFICER. IF CENTRAL CALIFORNIA COASTAL STEELHEAD ARE FOUND, IMMEDIATELY NOTIFY THE ENVIRONMENTAL MANAGER OR THE CONTRACTING OFFICER

38. MATERIAL NOT ACTIVELY IN USE SHALL BE COVERED AND SURROUNDED BY AN APPROPRIATE EXCLUSION BARRIER TO KEEP WILDLIFE AWAY. ANY MATERIAL STOCKPILED THAT IS NOT ACTIVELY

BEING USED DURING CONSTRUCTION SHALL BE COVERED AND SURROUNDED WITH A LINEAR

SEDIMENT BARRIER.

39. THE CONTRACTOR SHALL MINIMIZE CLEARING AND GRUBBING IN HABITAT AREAS TO ONLY THOSE

AREAS NECESSARY TO COMPLETE THE PROJECT CONSTRUCTION. THE CONTRACTOR SHALL

STABILIZE ALL DISTURBED AREAS WITHIN 12 HOURS OF ANY BREAK IN WORK UNLESS CONSTRUCTION

WILL RESUME WORK WITHIN SEVEN DAYS. EARTHWORK WILL BE COMPLETED AS QUICKLY AS

POSSIBLE, AND SITE RESTORATION WILL OCCUR IMMEDIATELY FOLLOWING USE. WHERE POSSIBLE, THE CONTRACTOR SHALL ACCOMPLISH EXCAVATION OF THE EXISTING SLOPE BY USING EQUIPMENT

LOCATED AND OPERATED FROM THE TOP OF BANK, WITH THE LEAST REMOVAL PRACTICAL FOR

VEGETATION.

40. CONTRACTOR SHALL INSTALL EROSION CONTROL AS REQUIRED BY THE SWPPP AND FOR FINAL

SURFACES IN ACCORDANCE WITH SPECIFICATIONS.

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

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SURVEY CONTROL AB AGGREGATE BASE

APPROX APPROXIMATE

ATC AT TIME OF CONSTRUCTION

BMP BEST MANAGEMENT PRACTICE

CENTERLINE

CO CONTRACTING OFFICER

COR CONTRACTING OFFICER REPRESENTATIVE

CONC CONCRETE

DIA/Ø DIAMETER

DR DRIVE

(E) EXISTING

E EASTING

EA EACH

EG EXISTING GRADE

EL ELEVATION

FG FINISHED GRADE

FT FOOT/FEET

H/HORIZ HORIZONTAL

HWY HIGHWAY

IN INCH/INCHES

INV INVERT

LAT LATERAL

LB LEFT BANK

LF LINEAR FEET

LT LEFT

MAX MAXIMUM

MAINT. MAINTENANCE

MIN MINIMUM

N NORTHING

N/A NOT APPLICABLE

NAD 83 NORTH AMERICAN DATUM OF 1983

NAVD 88 NORTH AMERICAN VERTICAL DATUM OF 1988

NGS NATIONAL GEODETIC SURVEY

NO NUMBER

NTS NOT TO SCALE

OFF OFFSET

OG ORIGINAL GRADE

PID PERMANENT IDENTIFIER

PIP PROTECT IN PLACE

R RADIUS

RB RIGHT BANK

RC REINFORCED CONCRETE

RD ROAD

RSP ROCK SLOPE PROTECTION

SL SLOPE

STA STATION

SWPPP STORMWATER POLLUTION PREVENTION PLAN

TYP TYPICAL

U.O.N. UNLESS OTHERWISE NOTED

V/VERT VERTICAL

W/ WITH

W/O WITHOUT

WSE WATER SURFACE ELEVATION

EXISTING GROUND

EXISTING CONTOUR5

ABBREVIATIONS

CL

WATER SURFACE ELEVATION

LEGEND

ENGINEERED FILL

1/2 TON ROCK SLOPE PROTECTION

FINISHED GRADE CONTOUR5

FLOW

DIRECTION OF RIVER FLOW

1/4 TON SOIL-FILLED ROCK SLOPE

PROTECTION

STAGING AREA

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

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SUMMARY TABLE:

GRAVEL FILTER

HAUL ROUTE

SITE INGRESS (FROM FWY)

SITE EGRESS (TO FWY)

REPAIR SITE

ACCESS POINT

CHANNEL CONTROL LINE

G13

CONSTRUCTION LIMITS OF WORK

(E) FENCE

ZONE 7 FLOOD PROTECTION PARCEL

PLAN

NORTH

NORTH ARROW

EXISTING GRADE

HO

PY

AR

D

RD

STONERIDGE DR

LAS POSITAS BLVD

JOHN

DR

SON

H

IG

H W

A Y

ARROYO MOCHO CANAL

A

LA

M O

C A

N A

L

D U

BL

IN

S

AN

R

AM

O N

S

ER

VI

C

ES

D

IS

TR

IC

T

(D

SR

SD

) R

EG

IO

N

AL

W

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W

AT

ER

TR

EA

TM

EN

T

FA

C

IL

IT

Y

J O

H N

SO

N

D R

IV

E

VAL VISTA PARK

LAS POSITAS BLVD

390+00 100+00

105+00

110+00

115+00

120+00

125+00

130+00

135+00

140+00

145+00

150+00

155+00

(E) FENCE/GATE

HAUL ROUTE

LINE G CONTROL LINE

(E) FENCE/GATE

LINE F CONTROL LINE

(E) FENCE/ GATE

CONSTRUCTION LIMITS OF WORK

SEE G-101

G13 G07 G14

G08 G09

G06G10

F12

F11

F13

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

A

B

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D

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SHEET ID

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US Army Corps of Engineers

U .S

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A

AN

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AT

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G-100SCALE: 1" = 300'

HAUL ROUTE PLANA1

PLAN

NORTH

600'0 300'

HAUL ROUTE

SITE INGRESS (FROM FWY)

SITE EGRESS (TO FWY)

STAGING AREA

REPAIR SITE

ACCESS POINT

CHANNEL CONTROL LINE

G13

CONSTRUCTION LIMITS OF WORK

LEGEND

© 2025 Microsoft Corporation © 2025 Maxar ©CNES (2025) Distribution Airbus DS

IG

H W

AY

LAS POSITAS BLVD

ARROYO MOCHO CANAL

HO

PYARD RD

0+

105+00 110+00 115+00 120+00 125+00 130+00

L19

L2

C2

L2

L22L23L24L25

L7

L8 L9 L1

L11 L12 L13 L14

L15 L16

L17

C1

L1

Mack Trucks Granite Axle Forward 6x4 GU713

PA

YN

E R

D

HAUL ROUTE

LINE G CONTROL LINE

CONSTRUCTION LIMITS OF WORK

SITE ACCESS POINT

AT (E) GATE

(E) GATE

SITE ACCESS POINT

AT (E) GATE

G13 G08 G09

G07 G14G06G10

F12

0+

5+

CONSTRUCTION LIMITS OF WORK

LINE #/ CURVE #

C1

C2

L1

L2

L3

L4

L5

L6

L7

L8

L9

L10

L11

L12

L13

L14

L15

L16

L17

L18

L19

L20

L21

L22

L23

L24

L25

L26

LENGTH

36.11

33.13

213.43

20.18

143.57

29.88

1004.78

1277.52

84.96

65.66

124.96

59.91

134.31

100.93

44.93

53.65

46.78

1232.51

645.14

383.00

15.52

394.89

82.83

1805.36

379.01

261.23

153.08

2637.64

START NORTHING

2073191.77

2073221.80

2074748.34

2074800.56

2074780.84

2074648.60

2074641.50

2073676.71

2072453.40

2072410.47

2072347.54

2072391.89

2072447.81

2072491.24

2072520.57

2072519.09

2072520.15

2072524.93

2072961.79

2073220.88

2073567.94

2073579.37

2073210.45

2073134.17

2072492.45

2072355.87

2072256.15

2072218.09

START EASTING

6155149.30

6155178.30

6152062.79

6152269.73

6152274.03

6152218.13

6152189.10

6152469.76

6152837.92

6152911.24

6152929.99

6153046.81

6153025.31

6153152.40

6153248.97

6153293.88

6153347.52

6153394.06

6154546.55

6155162.24

6155000.24

6155010.73

6155206.22

6155238.51

6153551.04

6153197.50

6152956.05

6152807.77

END NORTHING

2073220.88

2073210.45

2074800.56

2074780.84

2074648.60

2074641.50

2073676.71

2072453.40

2072410.47

2072347.54

2072391.89

2072447.81

2072491.24

2072520.57

2072519.09

2072520.15

2072524.93

2072961.79

2073191.77

2073567.94

2073579.37

2073221.80

2073134.17

2072492.45

2072355.87

2072256.15

2072218.09

2074748.34

END EASTING

6155162.24

6155206.22

6152269.73

6152274.03

6152218.13

6152189.10

6152469.76

6152837.92

6152911.24

6152929.99

6153046.81

6153025.31

6153152.40

6153248.97

6153293.88

6153347.52

6153394.06

6154546.55

6155149.30

6155000.24

6155010.73

6155178.30

6155238.51

6153551.04

6153197.50

6152956.05

6152807.77

6152062.79

HIGHWAY 680

L26

L1 L2

L3

L4 L5 L6

DUBLIN SAN RAMON

SERVICES DISTRICT

(DSRSD) REGIONAL

WASTEWATER

TREATMENT FACILITY

7399 JOHNSON DRIVE

VAL

VISTA

PARK

LINE F CONTROL LINE

(E) GATE

TURN-AROUND AREA (VAL VISTA

PARK MAINTENANCE YARD)

(E) PEDESTRIAN BRIDGE

VEHICLES PROHIBITED

F11F13

395+00400+00405+00410+00415+00420+00

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

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U .S

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SCALE: 1" = 150'

HAUL ROUTE AND STAGING PLAN - LINE GA1

PLAN

NORTH

0 150' 300'

B.

W

AI

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K

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SC

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D

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IN

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LA

N

G-101

HAUL ROUTE

STAGING AREA

REPAIR SITE

ACCESS POINT

CHANNEL CONTROL LINE

G13

LEGEND

CONSTRUCTION

LIMITS OF WORK

(E) FENCE

ZONE 7 FLOOD

PROTECTION PARCEL

SCALE: 1" = 150'

HAUL ROUTE AND STAGING PLAN - LINE FH1

PLAN

NORTH

0 150' 300'

(E) FENCE

STAGING AREA

A

LA

M O

C

N

A L

ALAMO CANAL

M

AT

C H

L

IN

E

- S

TA

+0

MATCH LINE - STA 395+00

HIGHWAY 680

H

IG

H W

A Y

G08 G09G07G14G13G06G10F1

F1 1F

CNTRL ZONE 7 DISK 2

N 2081387.70 E 6150929.86

EL 331.37

CNTRL ZONE 7 DISK 3

N 2072288.13 E 6152881.27

EL 323.38

CNTRL ZONE 7 DISK 4

N 2074975.95 E 6159443.48

EL 330.52

NGS PID HS5109 (GOLD CREEK)

N 2075186.40 E 6146924.81

EL 564.84

H

IG

H

W LAS POSITAS BLVD

HO

PY

AR

D

R D

HA

CI

EN

DA

D R

ARROYO MOCHO CANAL

A

LA

M O

C A

N A

L

TASSAJARA C

REEK

W LAS POSITAS BLVD

STONERIDGE DR

H

IG

H

HIGHWAY 580

A

LA

M O

C A

N A

L

STO

NERIDG

E

DR

H O

PYAR

D

R D

STONERIDGE DR

FO

O

TH

IL

L R

D

FO

O

TH

IL

L R

D

0+

0+

0+

0+

0+

0+

0+

0+

0+

480+00

490+00

0+

0+

110+00 120+00 130+00 140+00 150+00 160+00 170+00

180+00 190+00 200+00 210+00

SU

R

VE

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C O

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V-100

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

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US Army Corps of Engineers

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A

SCALE: 1" = 600'

SURVEY CONTROLA1

PLAN

NORTH

0 600' 1200'

ARROYO MOCHO CANAL

PA

YN

E R

D

105+00 110+00 115+00 120+00 125+00

LAS POSITAS BLVD

5+

0+

5+

0+

A

LA

M O

C A

N A

L

G8 G9G07G14G13G6G10F12

F11

F13

PR

O

JE

C

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VI

C

IN

IT

Y

AN

D

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M

AP

C-100

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

A

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F

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US Army Corps of Engineers

U .S

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C O

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H/ S

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D . B

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AU

D

S.

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A

SCALE: 1" = 100'

PROJECT VICINITY AND KEY MAPA1

PLAN

NORTH

100' 200'0

APPROX EXTENTS

OF SITE G13

DAMAGE (57 LF ±)

APPROX EXTENTS

OF SITE G07

DAMAGE (141 LF ±)

ARROYO MOCHO CANAL

(E) FENCE (TYP)

LAS POSITAS BLVD

PA

YN

E R

D

N: 2072562.48 E: 6153696.64

N: 2072583.07 E: 6153749.38

N: 2072638.32 E: 6153727.81

N: 2072617.73 E: 6153675.08

N: 2072726.86 E: 6153967.18

N: 2072670.81 E: 6153989.06

N: 2072722.10 E: 6154120.45

N: 2072778.15 E: 6154098.57

110+00 110+50 111+00 111+50 112+00 112+50 113+00 113+50 114+00 114+50 115+00 115+50 116+00 116+50

N: 2072622.94 E: 6153866.44

N: 2072662.94 E: 6153968.91

N: 2072679.95 E: 6153844.19

N: 2072719.95 E: 6153946.65

APPROX EXTENTS

OF SITE G14

DAMAGE (110 LF ±)

FLOW

PROTECT (E)

CULVERT

APPROX EXTENTS

OF SITE G08

DAMAGE (140 LF ±) APPROX EXTENTS

OF SITE G09

DAMAGE (100 LF ±)

FLOW ARROYO MOCHO CANAL

N: 2072869.75 E: 6154336.61

N: 2072920.77 E: 6154467.31

N: 2072813.29 E: 6154358.65 N: 2072864.32

E: 6154489.35

N: 2072967.21 E: 6154587.73

N: 2072930.65 E: 6154494.09

N: 2072911.37 E: 6154609.53

N: 2072874.82 E: 6154515.89

116+50 117+00 117+50 118+00 118+50 119+00 119+50 120+00 120+50 121+00 121+50 122+00 122+50 123+00

PROTECT (E)

CULVERT

LAS POSITAS BLVD(E) FENCE (TYP)

PL

AN

S O

VE

R

VI

EW

: S

IT

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G

, G

, G

, G

A

N D

G

C-101

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

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US Army Corps of Engineers

U .S

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SC

H/ S

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SCALE: 1" = 30'

PLAN - SITES G13, G14, G07H1 30' 60'0

PLAN

NORTH

SCALE: 1" = 30'

PLAN - SITES G08 AND G09A1 30' 60'0

PLAN

NORTH

E14 C-300

A1 C-300

H14 C-300

E1 C-300 E8

C-300

407+00407+50408+00408+50409+00409+50410+00410+50411+00

ALAMO CANAL FLOW

N: 2073883.79 E: 6152345.56

N: 2073897.52 E: 6152394.88

N: 2073826.77 E: 6152415.71

N: 2073813.04 E: 6152366.39

N: 2073702.55 E: 6152398.82

N: 2073772.31 E: 6152378.26

N: 2073786.23 E: 6152425.57

N: 2073716.48 E: 6152446.13

LINE F CONTROL LINE

APPROX EXTENTS

OF SITE F11

DAMAGE (73 LF ±)

APPROX EXTENTS

OF SITE F13

DAMAGE (73 LF ±)

103+00

104+00 105+00

106+00 107+00 108+00 109+00 110+00

APPROX EXTENTS

OF SITE G10

DAMAGE (245 LF ±)

ARROYO MOCHO CANAL

FLOW

APPROX EXTENTS

OF SITE G06

DAMAGE (75 LF ±)

N: 2072429.84 E: 6153184.53

N: 2072373.01 E: 6153206.36

N: 2072275.30 E: 6152987.77

N: 2072343.46 E: 6152957.11

N: 2072531.73 E: 6153452.71

N: 2072474.38 E: 6153474.46

N: 2072444.29 E: 6153405.93

N: 2072503.62 E: 6153383.43

N: 2072361.19 E: 6152861.64

STAGING AREA

LINE G CONTROL LINE

(E) FENCE

392+50393+00393+50394+00394+50395+00395+50396+00

ALAMO CANAL

FLOW

N: 2072361.19 E: 6152861.64N: 2072415.26

E: 6152845.70

N: 2072399.69 E: 6152792.87

N: 2072345.61 E: 6152808.81

LA

S

PO

SI

TA

S

BL

VD

LINE F CONTROL LINE

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

A

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SCALE: 1" = 30'

PLAN - SITE F13 AND F11F1

PLAN

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30' 60'0

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C-102SCALE: 1" = 30'

PLAN - SITE G10 AND G06A1

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SCALE: 1" = 30'

PLAN - SITE F12F1

PLAN

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30' 60'0

L8 C-300

L14 C-300

L1 C-300

H8 C-300

H1 C-300

APPROX EXTENTS

OF SITE F12

DAMAGE (56 LF ±)

020406080100 0 -20 -40 -60 -80 -100

2.00:1

LEFT BANK RIGHT BANK

ARROYO MOCHO CANAL

REPAIR LOCATIONEG (TYP)

10 YR WSE EL. 315.30

020406080 0 -20 -40 -60 -80 -100

2.00:1

LEFT BANK RIGHT BANK

ARROYO MOCHO CANAL

REPAIR LOCATION

10 YR WSE EL. 315.40

EG (TYP)

118+90

020406080 0 -20 -40 -60 -80 -100

2.00:1

LEFT BANK RIGHT BANK

REPAIR LOCATION

ARROYO MOCHO CANAL

10 YR WSE EL. 315.40

EG (TYP)

020406080 0 -20 -40 -60 -80 -100

LEFT BANK RIGHT BANK

2.00:1

ARROYO MOCHO CANAL

REPAIR LOCATION

10 YR WSE EL. 315.20

EG (TYP)

020406080 0 -20 -40 -60 -80 -100

2.00:1

LEFT BANK RIGHT BANK

ARROYO MOCHO CANAL

REPAIR LOCATION

10 YR WSE EL. 315.30

EG (TYP)

020406080 0 -20 -40 -60 -80

LEFT BANK RIGHT BANK

2.00:1

EG (TYP)

ALAMO

CANAL

REPAIR LOCATION

10 YR WSE EL. 316.30

108+18

020406080 0 -20 -40 -60 -80 -100

LEFT BANK RIGHT BANK

2.00:1

REPAIR LOCATION

ARROYO

MOCHO CANAL

10 YR WSE EL. 315.20

EG (TYP)

020406080 0 -20 -40 -60 -80 -100

LEFT BANK RIGHT BANK

2.00:1

ARROYO

MOCHO CANAL

REPAIR LOCATION

10 YR WSE EL. 315.10

EG (TYP)

394+19

020406080 0 -20 -40 -60 -80

2.00:1

LEFT BANK RIGHT BANK

ALAMO

CANAL

REPAIR LOCATION

10 YR WSE EL. 314.60

EG (TYP)

409+76

020406080 0 -20 -40 -60 -80 -100

LEFT BANK RIGHT BANK

2.00:1

REPAIR LOCATION

ALAMO

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10 YR WSE EL. 316.40

EG (TYP)

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SCALE: 1" = 30'

SECTION - SITE G07E8 30' 60'0 SCALE: 1" = 30'

SECTION - SITE G08E14 30' 60'0

SCALE: 1" = 30'

SECTION - SITE G09A1 30' 60'0

SCALE: 1" = 30'

SECTION - SITE G13H14 30' 60'0

SCALE: 1" = 30'

SECTION - SITE G14E1 30' 60'0

SCALE: 1" = 30'

SECTION - SITE F11L8 30' 60'0

SCALE: 1" = 30'

SECTION - SITE G06H8 30' 60'0SCALE: 1" = 30'

SECTION - SITE G10H1 30' 60'0

SCALE: 1" = 30'

SECTION - SITE F12L14 30' 60'0

SCALE: 1" = 30'

SECTION - SITE F13L1 30' 60'0

TOE OF BANK

5'

5'

10-YR WSE

WSE (ATC)

TOP OF BANK

COCONUT FIBERNET

OR APPROVED EQUAL

12 TON RSP (KEYWAY &

TOE)

14 TON SOIL FILLED RSP

MIN 3.5'

TOP SOIL COVER

0.

5'

0.5'

VARIES BY SITE

EXTENT OF REPAIR VARIES BASED

ON EROSION HEIGHT. SEE SUMMARY

TABLE SHEET G-003 FOR ELEVATIONS

EXTEND 18 INCHES BEYOND

SOIL FILLED RIP RAP

MIN 3.5' RSP

0.5' GRAVEL FILTER

LOCATE AND PROTECT IN PLACE

ANY EXISTING UTILITIES

REMOVE EXCESS SOIL

EG (TYP)

TOE OF BANK

5'

5'

10-YR WSE

WSE (ATC)

TOP OF BANK

COCONUT FIBERNET

OR APPROVED EQUAL

12 TON RSP (KEYWAY &

TOE)

14 TON SOIL FILLED RSP

MIN 3.5'

TOP SOIL COVER

"ENGINEERED FILL" INSTALL

GEOGRID IN 24" LIFTS PER

PLAN. COMPACT TO 92%

RELATIVE COMPACTION.

0.

5'

4' 2'

0.

5'

0.5'

MIN 3.5' RSP

0.5' GRAVEL FILTER

MIN 9'

LOCATE AND PROTECT IN PLACE

ANY EXISTING UTILITIES

REMOVE EXCESS SOIL

CLASS 2 AGGREGATE BASE,

MINIMUM 6-INCHES

EG (TYP)

TY

PI

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SCALE: NTS

REPAIR TYPE 1 - TOE REPAIRK1

SCALE: NTS

REPAIR TYPE 2 - FULL BANK REPAIRE1

1. INSTALL ALL REQUIRED BMPs, ENVIRONMENTAL CONTROLS, AND TURBIDITY CONTROLS BEFORE WORKING IN OR NEAR WATERWAYS (PER

SPECIFICATIONS 01 57 19).

2. LOCATE AND PROTECT IN PLACE ANY EXISTING UTILITIES

3. CLEAR AND GRUB WITHIN LIMITS OF WORK. REMOVE REMNANTS OF FLOOD FIGHTING, EXISTING RSP, AND LOOSE SOIL. LOOSE SOIL INCLUDES FAILED SLOPE. PERFORM SAWCUTTING, REMOVE, AND DISPOSE OF ANY ASPHALT WITHIN THE REPAIR AREAS. STOCKPILE LOCATIONS ARE SHOWN

ON G-101.

4. EXCAVATE THE KEYWAY TOE, WITH DIMENSIONS OF 5-FT WIDE AND 5-FT BELOW THE CHANNEL INVERT.

5. PROVIDE AND PLACE GRAVEL FILTER WITHIN TOE AREA, PER SPECIFICATIONS.

6. PROVIDE AND PLACE 1/2 TON RSP CONFORMING TO SECTION 72 OF THE STANDARD SPECIFICATIONS FOR CALTRANS (2024).

7. PROVIDE AND PLACE 1/4 TON SOIL FILLED RSP, PER SPECIFICATIONS (31 00 00). 1/4 TON RSP PLACED IN LIFTS WITH THREE POINTS OF CONTACT, AND SOIL FILL PLACED INTO VOIDS. EXTEND SECTION OF SOIL FILLED RSP TO THE 10-YR WATER SURFACE OR AS SHOWN IN THE SITE SPECIFIC

VIEW.

8. ENGINEERED FILL SHALL BE INSTALLED PER SPECIFICATION, WITH 92 PERCENT RELATIVE COMPACTION. PLACE GEOGRID WITH 24-INCH SPACING

WITHIN ENGINEERED FILL.

9. TOP SOIL COVER SHALL BE INSTALLED PER SPECIFICATION, WITH 6-INCH THICKNESS AND 90 PERCENT RELATIVE COMPACTION

10. RESTORE TO ORIGINAL GRADE. FINAL SLOPE MUST MATCH EXISTING ADJACENT UNDAMAGED SLOPE. SLOPE IS 2:1 (TYP) UNLESS OTHERWISE NOTED IN THE SITE SPECIFIC SECTION VIEW. GRADE AS NECESSARY TO ENSURE GENTLE TRANSITIONS.

11. PROVIDE HYDROSEED AND EROSION CONTROL PRODUCT CONFORMING TO SECTION 21 OF THE STANDARD SPECIFICATION FOR CALTRANS (2024). PLACE EROSION CONTROL PRODUCT IN ACCORDANCE WITH STANDARD PLAN H52 OF CALTRANS (2024). EXTEND HYDROSEED AND

EROSION CONTROL FABRIC TO ALL AREAS DISTURBED DURING CONSTRUCTION.

12. RESURFACE ALL ACCESS ROADS AT REPAIR SITES WITH A CALTRANS 3/4" CLASS 2 AB OF THE CALTRANS SPECIFICATION SECTION 26 (2024). PLACE MINIMUM 6-INCHES OF AB, OR MATCH EXISTING THICKNESS (WHICHEVER IS GREATER). COMPACT TO 95% RELATIVE COMPACTION.

SHEET NOTES