Foothill Water Treatment Plant & La Brea Subarea Updates

Public Works Commission

September 10, 2020

1

• Contractor mobilized on August 3, 2020

• Demolition commenced on August 4, 2020

FWTP Project Activities

2

FWTP Project Activities

Protection of existing

facilities

City contractor evacuating

old chemicals in chemical

room 3

• OMF performance test arrived early

• OMF performance test completed early

• Performance test report is under review by Carollo

FWTP Project Performance Test

4

FWTP Project Overview

37 Submittals Processing

9/8/20

Sub. # DescriptionSpec Section/ Ref.

DWG

Date

Received

from

Contractor

Date Forwarded

to City

Date Received

from City

Date Forwarded

to Carollo

Date Received

from Carollo

Date

Returned to

Contractor

Notes/Remarks

00001 Selective Demolition Plan 01 35 21 7/20/20 8/25/20 NET this item was previously approved

00002.1 OMF Proof Pilot Test 46 61 25 8/5/20 8/5/20 8/5/20 8/5/20 NET

00003 Automatic Backwashing Sand Separators 8/5/20 8/5/20 8/5/20 8/5/20 Rejected - see comments (Need Submittal)

00003.1 Automatic Backwashing Sand Separators 9/4/20 9/4/20

00004 Butterfly Valves 510 40 05 64 8/5/20 8/5/20 8/12/20 8/12/20 NET

00005. Concrete Mix Design Class A and C 03 30 00 8/11/20 8/11/20 8/19/20 A&R

00005.1 Concrete Mix Design Class A and C 03 30 00 8/28/20 Under Review

00006 Agreegate Base 31 05 15 8/11/20 8/11/10 8/21/20 8/21/20 NET

00007 Rebar (next centrury) 0320 00 8/12/20 8/12/20 8/27/20 8/27/20 MCN

00008 OMF Filter Assembly 41 61 25 8/18/20 8/18/20 8/27/20 8/27/20 MCN

00009 PVC Water Stop 03 15 00 8/18/20 8/19/20 8/24/20 8/24/20 NET

00010 Trench Grating Imbeds 05 50 00 8/20/20 8/20/20 9/3/20 9/3/20 MCN

00011 Pipe Layout Drawings 40 05 24.01 8/21/20 8/21/20 9/1/20 9/1/20 MCN

00012 BFV Actuators 40 05 64 9/1/20 9/1/20

00013 Baseline Schedule 01 31 17 8/28/20

00014 Pilot Test Report 4 61 256 8/28/20 9/2/20

00015 Metering Pumps and Chemical Skids 43 33 20 8/28/20 8/28/20

00016 WQMP 9/2/20 9/3/20

00017 THHN Wire 26 05 05 9/2/20 9/2/20

00018 Tiger Tanks 01 60 00 9/2/20 9/2/20

00019 Ethernet Cat 6 26 05 05 9/3/20 9/3/20

00020 16 AWG Wire - Plenum Rated 26 05 05 9/3/30 9/3/20

00021 GRC Rigid Conduit 26 05 33 9/3/20 9/3/20

00022 PVC Sch 40 and 80 Conduit 26 05 33 9/3/20 9/3/20

00023 Liquid Tight Flex Conduit 26 05 33 9/3/20 9/3/20

00024 Channel Strut 26 05 04 9/3/20 9/3/20 NET

00025 Clear Pipe Cement 26 05 33 9/4/20 9/5/20 NET

00026 Toggel Switch 26 05 04 9/4/20 9/4/20

00027 Junction Box electrical 26 05 04 9/4/20 9/4/20

00028 Electrical Hardeware 26 05 04 9/4/20 9/4/20

00029 Stud Wedge Anchor 26 24 45 9/4/20 9/4/20

00030 Cable Support 26 50 00 9/4/20 9/4/20

00031 Ground Screw 26 05 26 9/4/20 9/4/20

00032 Locknut steel/plastic insulation bushing 26 o5 33 9/4/20 9/4/20

00033 Threaded Rod 26 05 04 9/4/20 9/4/20

00034 Beam Clamp 26 05 04 9/4/20 9/4/20

00035 LED High Bay Light 26 50 00 9/4/20 9/4/20

City of Beverly Hills - Foothill Water Treatment Plant Pretreatment System

SUBMITTAL LOG9/8/20

RFI # Description

Spec

Section/ Ref.

DWG

Date

Received

from

Contractor

Date

Forwarded

to City

Date Received

from City

Date

Forwarded

to Carollo

Date Received

from Carollo

Date

Returned to

Contractor

Notes/Remarks

1 Steel Pipe Thickness 7/10/20 7/10/20 7/10/20 7/10/20 Closed

2RO Membrane Elements Warranty and

Design Criteria46 63 25 TBD 8/3/20 8/3/20 Closed

3 Automatic Backwashing San Separators 7/22/20 7/22/20 7/27/20 7/27/20 Closed

4 SOG Trench Construction Joint 7/23/20 7/23/20 7/31/20 7/31/20 Closed

5 OMF Influent PH Sample Tap M03 7/23/20 7/23/20 7/27/20 7/27/20 Closed

6 SAC Tank Piping 7/23/20 7/23/20 7/27/20 7/27/20 Closed

7 Location of V345 FEFIT116 V930-1 7/23/20 7/23/20 7/27/20 7/27/20 Closed

8 Job Trailer Location 7/24/20 7/24/20 7/27/20 7/27/20 Closed

9 Rotary Lobe Blower 8/5/20 8/5/20 8/6/20 8/6/20 Closed

10 OMF Controls Clarifications 8/5/20 8/5/20 8/12/20 8/12/20 Closed

11 Painting of Pipe 8/5/20 8/5/20 8/12/20 8/12/20 Closed

11.1 Painting of Pipe City to select colors

12 CMLC Clarifications 8/6/20 8/6/20 8/12/20 8.12.20 Closed

13 Conversation Room Curtains 8/6/20 8/6/20 8/6/20 8/7/20 Closed

14 Key to Door by Rollup 8/6/20 8/6/20 8/18/20 Closed

15 Flush Tank Diameter 8/12/20 8/12/20 see 15.1

15.1 Flush Tank Diameter 8/17/20 8/17/20 8/17/20 8/17/20 Closed

16 Equipment Pad Anchor Bolts 8/12/20 8/12/20 8/21/20 8/21/20 Closed

17 FRP Tank Design 8/12/20 8/12/20 8/18/20 8/18/20 Closed

18 Rebar Embedment 8/17/20 8/17/20 8/24/20 8/24/20 Closed

19 Conservation Room Wall 8/17/20 8/28/20 Closed

20 FRP Inline Mixer Materials 8/17/20 8/17/20 8/18/20 8/18/20 Closed

21 Pipe Size at Treated Water Line 8/17/20 8/17/20 8/18/20 8/18/20 Closed

22 Capping SW Line into Clearwell 8/17/20 8/17/20 8/18/20 8/18/20 Closed

23 Steel Tank Clarifications 8/17/20 8/17/20

24 P638 Pipe Support Bracing 8/21/20 8/21/20 8/24/20 8/24/20 Closed

25 SHC Duplex Skid Design 8/19/20 8/24/20 8/28/20 8/28/20 Closed

26 Ready Mix Concrete Alkali Reactivity 8/20/20 8/20/20 8/24/20 8/24/20 Closed

27 10 BWS OMF Pipe Support 8/21/20 8/24/20 8/31/20 8/31/20 Closed

28 MCC-WTF Breaker Swap 8/21/20 8/21/20 8/24/20 8/24/20 Closed

29 Fire Alarm & Strobe 8/21/20 8/21/20 8/24/20 9/1/20 Closed

30 Unknown pipe stub up 8/26/20 8/26/20

31 Pipe Material Support 8/26/20 8/26/20 8/28/20 8/28/20 Closed

32 Acid Eyewash Station 8/26/20 8/26/20 8/28/20 8/28/20 Closed

33 FRP RW on Clearwell 8/27/20 9/1/20 Closed

34 Column Protection Slab Conflict 9/1/20 9/1/20

35 Equipment Pads Outside Demo Limits 9/1/20 9/3/20 Closed

36 Existing valves Reused? 9/4/20 9/4/20

37 Pipe Support needed? 9/4/20 9/4/20

38 Trench Grating support/width 9/4/20 9/4/20

City of Beverly Hills - Foothill Water Treatment Plant Pretreatment System

RFI LOG

38 RFI’s Processing

• Work Completed: $513,475

• Percent Work Completed: 5.18%

• Work Schedule is On Time

5

FWTP Project Schedule

6

La Cienega Well No. 1 (LCW-1)

Drilled 16-inch pilot hole

to 500 ft. with no drilling

additives

Collected water quality

samples from two

discrete zones in the

open boreholes

Installed water level

monitoring devices in La

Cienega Carwash

monitoring wells

(DDW request)7

La Cienega Well No. 1 (LCW-1)

Reamed borehole to 26-

in diameter to 475 ft.,

constructed well with

460 ft. of 14-inch

stainless steel well

casing and louvered

well screen

Filled annular space with high quality, high

silica content, well rounded filter pack to 190 ft.

Installed

cement seal

from 190 ft. to

ground surface

8

La Cienega Well No. 1 (LCW-1)

• Mechanical development completed (to remove remnant drilling fluid)

• Test pump installed

– Pumped at 130 gpm (max. rate to sewer) for 1.5 hours, ~12 ft. of drawdown – promising news

• Upcoming Work

– Discharge line installation to storm drain

– Pumping development (to remove fine particles and sand)

– Pumping tests, including packer test

9

16” Ductile Iron Pipe Installation

La Brea Subarea Transmission Main

10

La Brea Subarea Transmission Main

Slipline 18” PVC Fused Joints 11

La Brea Subarea Transmission Main

Slipline 18” PVC Fused Joints 12

13

La Brea Subarea Transmission Main

Wench for Slipline

Demolition of Sand Pit Site

• Bid date 8/20/20

• Award scheduled for 9/15/20

• Construction: TBD

14

La Brea Subarea Overview

LCW NO. 1 - DRILLING

• Budget: $950,230

• Work Billed: $600,941

• Percent Work Completed: 75%

• Work Schedule is On Time

TRANSMISSION MAIN

• Budget: $8,000,000

• Work Billed: $3,157,704

• Percent Work Completed: 50%

• Work Schedule is On Time

SAND PIT SITE – DEMOLITION

• Budget: $402,050

• Award Project: 9/15/20

15

LCW NO. 1 – EQUIPPING: TBD

• In design

• Pending results of drilling

SAND PIT – TEST WELL: TBD

• In design

• Pending completion of demo

La Brea Subarea Development Project Timeline

16