for
06/21/2022
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45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520 amily
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Myers & Sons Construction, LLC May 03, 2022
45 Morrison Ave
Sacramento, CA 95838
Veolia Water North America
Attn: Chandrasekar Venkatraman (CV)
601 Canal Blvd
Richmond, CA, 94804
Via: Email
Re: 2022.05.03 – Letter 002 – L+R – Change Order Request for Buffer Tank Relocation Dear Mr. Venkatraman,
See enclosed change order request that was discussed for the relocation of the WAS Buffer Tank to the “center island” from Lee+Ro to complete a modified 50% design deliverable. Myers would provide and lead t he on-site Potholing activities with direction from L+R.
Exclusions:
1. Relocation of large stockpile that has been generated by Shimmick Construction from the Criti cal Improvements project and is the current suggested relocation for the WAS Buffer Tank a nd subsequent RDT Facility. This stockpile needs to be moved before potholing and geotechn ical activities can start.
2. VFA analysis for the WAS Buffer Tank. There would need to be an additional scope clarification if VFA analysis is to become part of this contract.
Impacts associated with this Change Order Request to complete a modified 50% design :
• Cost: $147,213.19
• Schedule Extension: 42-days
This change order request will need to be executed in order to complete the 50% de sign Deliverable with a WAS Buffer Tank. At this time, it’s Myers and L+R understanding that the contract schedule has been suspended since 2/18/22.
If you have any follow-up questions, it will be best we set-up a confere nce call with Lee+Ro and Myers and Sons Construction.
Regards,
Myers and Sons Construction, LLC
Robert Barton
Project Manager
EXHIBIT 1
45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520
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List of Attachments:
1. RFC 001 Cost Summary & EWRs
2. 2022.05.03 – Lee+ Ro Change Order Request – WAS Buffer Tank Relocation to Center Island
3. 2022.05.02 – Final VFA Scope Clarification Letter
4. Potholing Quote
45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520
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Attachment 1
EXTRA WORK REPORT
RFC Number 001
Report No. See below
Project Title: 0313 Richmond Sludge Thickeners Design-Build Date Performed: TBD Job No.: 0313 Date of Report 5/16/22
DESCRIPTION OF WORK
SUMMARY
TOTAL
Date Option Labor Equipment Materials Subs incl Bond
1 8,054.51 $ $ - $ - 10,272.15 $ 18,693.19 $ 2 $ - $ - $ - 126,000.00 $ 128,520.00 $
3 $ - $ - $ - - $ $ -
4 $ - $ - $ - - $ $ -
5 $ - $ - $ - - $ $ -
147,213.19 $
MYERS & SONS REPRESENTATIVE
Subtotals
RFC 001 - Additional Services to provide modified 50% Design for Sludge Thickener Design-Build.
Potholing Activities
Geotechnical Field Investigation
**
** Geotechnical Field Investigation
includes other subcontractors such as
BAAQMD permitting, Questa geotechnical
and Towill topo work. (see separate backup
documentation included herein).
EXTRA WORK REPORT
RFC Number 001
Report No. 1.0
Project Title: 0313 Richmond Sludge Thickeners Design-Build Date Performed: TBD Job No.: 0313 Date of Report 5/3/22
DESCRIPTION OF WORK
SUMMARY OF LABOR
TRADE QUANTITY REG OT DBL TOT REG OT DBL TOTAL
General Foreman 1 24 24 109.18 $ 2,620.32 $
Operator 1 24 24 104.00 $ 2,496.00 $
Laborer 1 24 24 78.65 $ 1,887.60 $
0 - $
0 - $
SUBTOTAL:
7,003.92 $
MARKUP: 15% 1,050.59 $
LABOR TOTAL: 8,054.51 $
SUMMARY OF EQUIPMENT
HOURS RATE TOTAL
- $
- $
SUBTOTAL:
- $
MARKUP: 15% - $
EQUIPMENT TOTAL: - $
SUMMARY OF MATERIALS
UNIT RATE TOTAL
- $
- $
LS - $ - $
SUBTOTAL:
- $
MARKUP: 15% - $
SUMMARY SPECIALTY FORCES MATERIAL TOTAL: - $
UNIT RATE TOTAL
HR 245.00 $ 5,880.00 $
HR 294.00 $ 3,528.00 $
EA 50.00 $ 150.00 $
EA 75.00 $ 225.00 $
- $
- $
SUBTOTAL:
9,783.00 $
MARKUP: 5.0% 489.15 $
SPECIALTY FORCES TOTAL: 10,272.15 $
TOTAL SUBTOTAL 18,326.66 $
BOND 2% 366.53 $
TOTAL OF THIS REPORT: 18,693.19 $
MYERS & SONS REPRESENTATIVE
DESCRIPTION QUANTITY
Potholing Activitites 24
DESCRIPTION QUANTITY
9.75%Sales Tax - Included
Potholing Activitites - Travel Time 12
PPE/COVID 3
MAKE/MODEL QUANTITY
Proposed not-to-exceed T&M Budget Potholing. This budget excludes moving the existing stockpile from the Critical Improvements project.
Hours RATE
Water 3
EXTRA WORK REPORT
RFC Number 001
Report No. 2.0
Project Title: 0313 Richmond Sludge Thickeners Design-Build Date Performed: TBD Job No.: 0313 Date of Report 5/3/22
DESCRIPTION OF WORK
SUMMARY OF LABOR
TRADE QUANTITY REG OT DBL TOT REG OT DBL TOTAL
0 - $
0 - $
0 - $
0 - $
0 - $
SUBTOTAL:
- $
MARKUP: 15% - $
LABOR TOTAL: - $
SUMMARY OF EQUIPMENT
HOURS RATE TOTAL
- $
- $
- $
- $
- $
- $
SUBTOTAL:
- $
MARKUP: 15% - $
EQUIPMENT TOTAL: - $
SUMMARY OF MATERIALS
UNIT RATE TOTAL
- $
- $
- $
- $
LS - $ - $
SUBTOTAL:
- $
MARKUP: 15% - $
SUMMARY SPECIALTY FORCES MATERIAL TOTAL: - $
UNIT RATE TOTAL
LS $120,000.00 120,000.00 $
- $
- $
SUBTOTAL:
120,000.00 $
MARKUP: 5.0% 6,000.00 $
SPECIALTY FORCES TOTAL: 126,000.00 $
TOTAL SUBTOTAL 126,000.00 $
BOND 2% 2,520.00 $
TOTAL OF THIS REPORT: 128,520.00 $
MYERS & SONS REPRESENTATIVE
Sales Tax, 9.75%
DESCRIPTION QUANTITY
L+R 1
DESCRIPTION QUANTITY
MAKE/MODEL QUANTITY
L&R's Additional Design Services for modified 50% design.
Hours RATE
45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520
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Attachment 2
May 2, 2022
Robert Barton, Project Manager
Myers and Sons Construction
45 Morrison Ave
Sacramento, CA 95838
RE:
Change Order Request for Project Relocating to Center Island Sludge Thickener Project, City of Richmond, California
677
Dear Mr. Barton:
LEE+RO would like to submit this Change Order Request (COR) for the referenced project.
The basis for the COR is City’s request for the Project Site relocation during the design submittal process.
The project site has moved from DAF No. 2 site to the Center Island after the 50% Design Submittal was submitted. Anticipating different site conditions at the new site, the Draft Basis of Design Report must be updated and the 50% Design Submittal modified to reflect the design suitable for the new site. Specifically, key tasks included in the COR are:
Review of as-built drawi ngs for the New Site
Develop potholing map (pot holing by Myers and Sons)
Determination of appropriate footprint for the RDTs and WAS buffer tank Work with stakeholders to determine the app ropriate size of the WAS buffer tank, if not 24-hour storage volume
Update the Draft Basis of Design Report
Coordinate with subc onsultants (Air Permit, Geotechnical, and Surveying) Provide modified 50% Design Submittal
Conduct 50% Design Submittal Review
The estimated cost for the COR is approximately $120,000 including subconsultants’ fee of approximately $47,000.
LEE+RO requests that 42 calendar days be allowed from the date of the COR approval in order to complete the COR tasks and deliver the modified 50% Design Submittal.
Sincerely,
Tony Park, PE
Vice President
PIC PM Structural Mechanical Electrical Civil Civil TA/QA&QC CAD W P E8 E7 E6 E6 E6 E4 E2 E7 T4 A2
$273 $246 $229 $229 $229 $190 $152 $246 $152 $118 BAAQMD Geotech Topo 1 Review of as-built drawings in the Center Island area. 2 8 10 $2, 012 $2,012 2 Provide Potholing map. Potholing by Myers 1 2 2 5 $930 $930 3 Determination of appropriate footprint for the
RDTs/Buffer Tank. 2 2 2 4 4 14 $2,776 $2,776
4 Work with the stakeholders to determine the appropriate size of the buffer tank after Carollo’s VFA production
modelling. Optimize the dimensions of the buffer tank so that the top of the buffer tank is efficiently used for the RDTs and its accessory components installation and
maintenance.
4 8 2 8 4 4 30 $6,010 $6,010
5 Discuss with the City the approach for the continued use of the existing DAF unit during construction. As
appropriate, show the use of the existing DAF in the
conceptual design.
2 4 1 7 $1,404 $1,404
6 Provide 50% design submittal for the relocated thickener system including re-routing of the WAS supply lines,
power and communications conduits, thickened sludge
piping, filtrate piping, water supply piping and any other utilities. Depending on the City’s operational desires for the buffer tank, including VFA production goals, design appropriate tank mixing system. Coordinate any air-
permitting impacts with the air permitting consultant. Re size the Odor control unit. Resize pumps due to new
location.
4 16 32 32 32 32 20 16 67 10 261 $51,432 $51,432
7 Revise Basis of Design Report 4 8 24 16 6 $10,516 $10,516 8 Subconsultants 4 6 20 10 40 $7,888 $15,000 $10,000 $12,000 $44,888 8 37 42 36 40 102 50 16 78 16 367 $82,968 $15,000 $10,000 $12,000 $119,968
DESIGN PERIOD ENGINEERING SERVICES
LEE+RO
SCHEDULE OF VALUES FOR CHANGE ORDER #1
RDT RELOCATION TO CENTER ISLAND
CITY OF RICHMOND
WWTP SLUDGE THICKENER PROJECT
Tasks 1 - 8 Totals
Subconsultants Cost Total CostTask Task Description LEE & RO Hours
LEE & RO
Cost
(see following page for details)
6/20/22, 2:28 PM Veolia Mail - Fwd: 2022.05.03 – Letter 002 – MSC – COR 001 - Change Buffer Tank Location https://mail.google.com/mail/u/0/?ik=e128555f8f&view=pt&search=all&permthid=thread-f%3A1735737146584385248%7Cmsg-f%3A17361906848886… 1/2 Mackay, Morgan <[email protected]>
Fwd: 2022.05.03 – Letter 002 – MSC – COR 001 - Change Buffer Tank Location 1 message
Vignau Loria, Rodrigo Belisario <[email protected]> Mon, Jun 20, 2022 at 2:27 PM To: Morgan Mackay <[email protected]>
FYI
---------- Forwarded message ---------
From: Robert Barton <
[email protected]>
Date: Wed, Jun 15, 2022 at 2:12 PM
Subject: RE: 2022.05.03 – Letter 002 – MSC – COR 001 - Change Buffer Tank Location To: Chandrasekar Venkatraman (
[email protected]) <[email protected]> Cc: Scott Wolfenberger <[email protected]>, Tony Park <[email protected]>, Jay Jung <[email protected]>
CV,
See below breakdowns for L+Rs Sub-consultants for the breakdown that was provided on 5/23/22 (attached again as a reference for this follow-up).
BAAQMD is $15k based on BAAQMD actually needing 64 hours instead of the 16 hours mentioned in the attached email. L+R was concerned that additional time would be needed considering all of the additional equipment that will be added in order to utilize the buffer tank.
Survey/Topo is $12k based on Towill’s estimate of $11,500.00 Geotech is $10k based on Questa’s estimate of $8,500.00 Please keep in mind that L+R and Myers worked under the premise of “time is of the essence” to best move efficiently forward for the City of Richmond.
Thanks,
Robert Barton
Project Manager
Cell#: 209-681-5353
[email protected]
Effective 1/1/2022, our office address will change:
45 Morrison Ave
Sacramento, CA 95838
Our phone number and fax number will remain the same.
From: Aneal Shah
Sent: Thursday, April 14, 2022 4:37 PM
To: Courtney Mizutani
Cc: Boyana Angelova; Grace McNamee
Subject: RE: Richmond Thickener project - relocation to Center Island
Thank you Courtney for estimating additional budget for the change, this helps.
I just checked, your February invoice was passed onto the client on March 3 rd.
Aneal Shah, PE
Supervising Engineer
Celebrating 40 years as partners in possibility.
Bay Area
1550 Parkside Drive, Suite 320
Walnut Creek, CA 94596
T
925-627-3397
M 707-217-6558
website · map
From: Courtney Mizutani <
[email protected]>
Sent: Thursday, April 14, 2022 4:27 PM
To: Aneal Shah <[email protected]>
Cc: Boyana Angelova <[email protected]>; Grace McNamee <Grace.McNamee@lee- ro.com>
Subject: Re: Richmond Thickener project - relocation to Center Island
Hi Aneal,
Yes, I have submitted a project invoice. It was sent to you and Lee+Ro Accounting on February 23, 2022 and I received an acknowledgement of receipt from Denise Morales that same day. I had assumed that Lee+Ro would have included it in the next client invoice. I have billed 23% of the contracted hours ($4675.00). I have not received payment as of today. I understand from Irene Herbst that Lee+Ro is catching up on invoicing.
I understood that the design was on-hold pending some decisions by the client. I was not aware of what those changes might be (location, how extensive, etc). The buffer tank itself was not included in my original estimate, but since it has an exhaust stack and will emit pollutants as the
tank is filled, it should be included in the permit. I am not familiar with the location of Center Island.
My proposal to prepare the permit documents was based on receiving final information for the facilities to be be permitted. So far, an additional facility (the buffer tank) and a new location (Center Island) have been proposed. Changes in the project design impact my portion of the project and require rework and additional work. Assuming no more significant changes are made to the project, I think an additional 16 hours should be sufficient to prepare the application ($3520) with the revised location, and to include the additional source. I will also need some reworking of the location drawings (that Boyanna has been doing) to reflect the revised location.
As always, if I don't need the additional budget, I won't use it. But I believe it is better to anticipate the potential impact and later come in below budget rather than have to come back to the client and ask for more money. No one ever gets upset when I come in under budget.
Let me know if you need additional information,
Courtney
On Thursday, April 14, 2022, 02:27:51 PM PDT, Aneal Shah <[email protected]> wrote:
Hi Courtney,
As you may know, the location of the thickener and the associated buffer tank is being moved within the confines of the WWTP, to a new a location called Center Island. Could you please tell us what impact, if any, this may have on your scope and fees? I may have missed this – did you submit an invoice? What are your charges to date?
I need to convey to the Client any impacts to your work by tomorrow so your prompt response would be appreciated.
Thanks,
Aneal
***see below
***$3,520/16 = $220/hr. per original quote. It is
anticipated to take 64 hours instead of 16. Therefore, 64 x $220 = $14,080 - rounded to $15k (see above email)
2 T (858) 332-4285
website · map
From: John May <[email protected]>
Sent: Thursday, April 14, 2022 8:11 PM
To: Boyana Angelova <[email protected]>
Subject: RE: Richmond WWTP Sludge thickener design
Boyana,
That looks to be about two days of work. Will we need utility locating as well? I could get a quote from SiteScan.
Survey Only: $11,500 ($5750 per day).
Thanks,
--
John T. May| Project Manager
Towill, Inc. | Surveying, Mapping, LiDAR, Geospatial Solutions 2300 Clayton Rd, Ste 1200
Concord, CA 94520-2176
T | 925-682-6976, Ext. 1032 C | 510.857.7143
http://www.towill.com
[Based on this estimate, the designer has rounded this up to $12k, which is what is presented in this TA.]
1 Boyana Angelova
From: Will Hopkins <[email protected]>
Sent: Friday, April 15, 2022 9:45 AM
To: Boyana Angelova
Subject: RE: [EXTERNAL] Geotech Letter report- Richmond WWTP-Sludge Thickener I would recommend including a budget for services during construction. We need to observe the foundation excavations during construction and there are generally geotech rfi's. Probably $2,500 would be sufficient.
Thank you,
Will Hopkins
Questa
On Apr 14, 2022 4:59 PM, Boyana Angelova <[email protected]> wrote:
Hi Will,
Sounds good, thank you so much for your quick response! We are currently drafting up a change order proposal for the client and will include your fee in our cost estimate. I will let you know once we have the green light to move forward with the geotechnical scope.
Thank you,
Boyana Angelova, PE, QSD/QSP
Civil Engineer
Celebrating 40 years as partners in possibility.
San Diego
10640 Scripps Ranch Blvd.
San Diego, CA 92131
T (858) 332-4285
website · map
From: Will Hopkins <[email protected]>
Sent: Thursday, April 14, 2022 4:30 PM
To: Boyana Angelova <[email protected]>
Subject: RE: [EXTERNAL] Geotech Letter report- Richmond WWTP-Sludge Thickener
Hi Boyana:
I don’t think we need to drill the site, but we should do some test pits to verify the depth to bedrock, which should be shallow, within 5 feet (unless there is a deep back fill). I have some photos from last August after demolition (see attached), but nothing to tell me how deep they had to go during the demolition. We also do not have any data on the soil preparation and compaction, although Shimick did do some compaction of soil in the area with a Sheepsfoot 2 roller. If we do some test pits, we could test compaction of the fill at various depths and determine a bearing capacity based on those results. I am assuming that the client could provide an Excavator or Backhoe to dig test pits. This would take about 6 hours. So it would be a Geotechnical Exploration and Report.
Scope of Work
Field Investigation to evaluate soils (Engineer and Field Tech) (Backhoe provided by others)
Laboratory soils testing
Prepare logs of test pits
Engineering Analysis
Report Preparation
Consultations with SE and Plan Review
Cost
Estimated cost $8,500 Time and Expense basis. Backhoe to be provided by client.
Let me know if you have any questions,
Will Hopkins
Questa Engineering
(510)236-6114, ext. 222
From: Boyana Angelova [mailto:[email protected]] Sent: Thursday, April 14, 2022 3:42 PM
To: Will Hopkins
Subject: RE: [EXTERNAL] Geotech Letter report- Richmond WWTP-Sludge Thickener Hi Will,
I’m reaching out regarding Richmond WWTP’s Sludge Thickener project. The client wants to move forward with locating the sludge thickening facility (RDT units) in the Center island as shown in the attached sketch. The existing DAFT #2 tank will be repurposed as a sludge storage tank instead of building an UG or partially UG tank (as I have previously mentioned). This approach would help us reduce/eliminate bedrock issues that we could encounter in the DAFT area and also avoid constructing close to the 60" effluent pipe which is also in the general area of the existing DAFT #2.
Do you think we will need a geotechnical exploration plus report or will it be just a report based on previous work done by Questa in the surrounding areas? My feeling is that area needs to be explored. Please let me know your thoughts.
Also, I need to convey to the Client any fee impact by tomorrow so your prompt response would be appreciated. I don’t need a formal proposal, just a fee based on your recommendation (either geotechnical exploration plus report or just a report based on previous work).
Thank you,
Boyana Angelova, PE, QSD/QSP
Civil Engineer
Celebrating 40 years as partners in possibility.
San Diego
10640 Scripps Ranch Blvd.
[Based on this estimate, the
designer has rounded this up to
$10k, which is what is presented in
this TA.]
45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520
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Attachment 3
April 29, 2022
Robert Barton, Project Manager
Myers and Sons Construction
45 Morrison Ave
Sacramento, CA 95838
RE:
Request for Clarification - VFA Production in WAS Buffer Tank Sludge Thickener Project, City of Richmond, California
677
Dear Mr. Barton:
It is our understanding that a WAS buffer tank is being considered for the Sludge Thickener Project. Although not required for continuous operation, hence not included in the response to the RFP, a WAS buffer tank would provide certain benefits to the thickener operation.
LEE+RO did not include the WAS buffer tank to the Project because it would substantially increase the Project design and construction costs.
In the past several weeks, the proposed WAS buffer tank has been evaluated for Volatile Fatty Acids (VFA) production for the purpose of biological phosphorus removal. The WAS buffer tank may promote VFA production under proper conditions including the hydraulic retention time (HRT), temperature, pH and appropriate mechanical mixing of tank contents.
In addition, additional design efforts will require process modeling for the entire treatment system under various operating scenarios in order to develop the design criteria - including tank HRT, mixing requirements, operating conditions including temperature and pH, tank emissions and any chemical dosing requirements. The design team at LEE+RO does not believe the effort required is fully accounted for by requiring the buffer tank to be coordinated with the SRT Implementation per addendum 2 of the RFP.
To summarize our response to RFP, LEE+RO is to provide two rotating drum thickeners to replace the existing Dissolved Air Floatation (DAF) unit. The design team at LEE+RO does not believe we are scoped to provide VFA production goals. Please advise if a contract amendment to adjust the scope to include VFA and subsequent budget is forthcoming.
Sincerely,
Tony Park, PE
Vice President
45 Morrison Ave, Sacramento, CA 95838 P: 916-283-9950 F: 916-614-9520
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Attachment 4
6940 Tremont Road
Dixon, CA 95620
209-872-8560
"An equal opportunity employer"
Company: Phone (o) Phone (m):
Contact: E-mail:
Office Address:
Billing Address:
Price UM Qty Amount
245.00 $ /hour 8 1,960.00 $
294.00 $ /hour 2 588.00 $
330.75 $ /hour 0 - $
50.00 $ /day 1 50.00 $
75.00 $ 1 75.00 $
12% 1.00
Sub Total Estimate 2,673.00 $
FFR Fee 320.76 $
Total Cost Estimate 2,993.76 $
Company: PO#:
Name (please print): Title:
Signature: Date:
PREPARED BY:
ACT Industrial will be providing (1) hydro vac operator and unit. Potholing approximately 10 potholes in varyin sizes and depth for exploration purposes aruond sensitive utility lines. Dumping of spoils will be onsite and provided by customer. All work is based on a Time and Materials basis in addition to portal to portal. [email protected]
45 Morrison Ave. Sacramento, CA
Robert Barton
(if different than above)
ESTIMATE
APPROVED BY:
I am authorized to bind the Company
PPE / COVID-19
water
All rates are subject to energy & security surcharges variable from >12% Please note all work will be done on a time and materials basis portal to portal. For estimating cost and purposes the actual job will be invoiced on "atual time and materials". All work will be done under the terms and conditions contained in this Agreement.
Hydro-Ex Truck, Operated Double-time
Myers-Sons Construction 209-681-5353
DATE: 1/11/2022
REFERENCE #:
Everett Jackson
Scope of Work
Description
Hydro-Ex Truck, Operated Straight Time
Hydro-Ex Truck, Operated Overtime
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