Agreement - Achen-Gardner

City of Chandler — Regular Meeting (2024-10-17)

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6 ® CHANDLER
WS 2012002

Community of Innovation

CHANGE ORDER NO. 4
DATE 9/18/24

This Change Order No. 4 (“Change Order No. 4”) to the construction services agreement is made by and
between the City of Chandler, an Arizona municipal corporation, (“City”) and Achen-Gardner Construction,
LLC (“Contractor”), on this day of 2024 (“Effective Date” by Clerk).

Change Order not valid until signed by both the City and the Contractor. Contractor's signature indicates Agreement
herewith, including any adjustments in the Agreement Price or Agreement Time.

Project Name: DETROIT BASIN / GAZELLE MEADOWS PARK STORM SYSTEM AND ASSOCIATED

IMPROVEMENTS
Project No.: ST2101.401
User Dept.: Parks and Streets NTP Date: 11/06/2023
ITO: Achen-Gardner Construction, LLC 2195 W. Chandler Boulevard, Suite 211
Chandler, AZ 85224
(CONTRACTOR) (Mailing Address)

dbroderick@achen.com

(Email Address)

Contractor must make the following changes to this Agreement:

Additional funds are to complete the install of ADA compliant handicap ramps, aprons and associated
asphalt repairs along Erie Street between Arizona Avenue and McQueen.

Amendment authorized by Owner name: Daniel Haskins Date: 9/13/2024

Original Agreement amount: $10,182,770.05

Previous Change Order total: $4,671,358.93

Last Agreement amount approved by Council: $17,243,687.66

This Change Order: $295,637.89

This Change exe + previous Change Order(s) not approved by $295,637.89

Council total:

Revised Agreement total: $17,539,325.55

Council Approval Required (yes indicates approval required) Yes No

Change Order(s) total over $100,000: xl oO

Change Order(s) total causes Agreement to exceed $100,000: & im}
Agreement Time

Agreement time prior to this Change Order (including previous 570

change order(s): Calendar Days

Net change resulting from this Change Order: Calendar Days

Revised Agreement time (including this Change Order): 520

evised Agreeme 8 8 ; Calendar Days

Council Approval

Council Approval Date: 10/17/2024

Project Name: DETROIT BASIN / GAZELLE MEADOWS PARK STORM SYSTEM AND ASSOCIATED IMPROVEMENTS Page 1

Project No.: ST2101.401
Rev. 1/16/2024

THE ABOVE IS AGREED TO BY:

“CITY” CITY OF CHANDLER “CONTRACTOR”
Achen-Gardner Construction, LLC.

MAYOR fae
RECOMMENDED BY: (Daniel Spitza
Print Name
Daniel Haskins, P.E. Title
CIP City Engineer
Dspitza@achen.com
APPROVED AS TO FORM: Signer Email Address
City Attorney qe
ATTEST:
City Clerk Seal
C: Owner / Project Mgr
Project Name: DETROIT BASIN / GAZELLE MEADOWS PARK STORM SYSTEM AND ASSOCIATED IMPROVEMENTS Page 2

Project No.: $T2101.401
Rev. 1/16/2024

EXHIBIT A

EXHIBIT Al: LIST OF CHANGE ORDER DOCUMENTS
AUGUST 29, 2024
CITY OF CHANDLER — DETROIT BASIN/GAZELLE MEADOWS PARK
CHANGE ORDER NO. 4— ADA RAMPS & RELATED CONCRETE WORK
PRICING PROPOSAL
PROJECT NO: S$T2101.201 & ST2101.202

Change Order No. 1 for Erie Executed (9-20-2024) to GMP 1 Detroit Basin/Gazelle Meadows Park
Storm System & Associated Improvements CMAR Project; City of Chandler Project No. $T2101.251.

Change Order No. 2 for Sewer Bypass Executed (5-20-2024) to GMP 1 Detroit Basin/Gazelle
Meadows Park Storm System & Associated Improvements CMAR Project; City of Chandler Project
No. $T2101.251.

Change Order No. 3 Proposal for Park Improvements to GMP 1 Detroit Basin/Gazelle Meadows Park
Storm System & Associated Improvements CMAR Project; City of Chandler Project No. $T2101.251.

CHANGE ORDER NO. 4—ADA RAMPS AND RELATED CONCRETE REMOVAL/REPLACEMENT Proposal
including a cover letter dated July 3, 2024, and July 18, 2024 revision 1.

Executed (9-26-23) Pre-construction Services Contract with Achen-Gardner Construction, LLC, and
the City of Chandler for the Detroit Basin/Gazelle Meadows Park Storm System & Associated
improvements CMAR Project; City of Chandler Project No. $T2101.251.

EXHIBIT A2: CLARIFICATIONS AND ALLOWANCES
AUGUST 29, 2024
CITY OF CHANDLER — DETROIT BASIN/GAZELLE MEADOWS PARK
CHANGE ORDER NO. 4— ADA RAMPS & RELATED CONCRETE WORK
PRICING PROPOSAL
PROJECT NO: ST2101.201 & ST2101.202

1. Clarifications:

a. Final pricing includes the removal and replacement of sidewalk, sidewalk ramps, aprons,
and valley gutters as detailed in Exhibit B2. The additional quantities shown in Exhibit B3
are to be added to the change order. Any line items listed in Exhibit B3 that have an existing
unit price rate present in GMP 1 have had the GMP unit pricing extended to those items.
Any items that did not have an existing unit price rate in the original GMP have had new
unit pricing applied to them for the change order.

b. Sidewalk ramps are per details COC 258-2/258-3 and MAG 236-5. The locations are noted
on Exhibit B2.

c. Price excludes the over-excavation of soft, expansive, or unsuitable materials and
installation of granular materials.

2. General Clarifications:

a. Change Order No. 4 pricing does not include any additional funds for Change Order
Contract Pay Items 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 115, 120, 125, 130, and 135.
We plan to utilize existing Contract Change Order No. 1 Allowance amounts for this Change
Order No. 4 scope of work. Any additional funds required for these items related to the
added scope of work will be paid for out of the construction contingency, Pay Item #700-
791, included in Change Order #01 to the original GMP.

b. Final pricing does not include any costs associated with the removal, replacement, bracing,
and/or relocation of any existing buried and/or overhead utilities.

c. Construction Water & Dust Control will be billed to Change Order #01 Pay Item 70
(Construction Water/Dust Control) at the same monthly rate that was agreed to for GMP 1,
$11,448,83, for the added duration of this Change Order No. 4.

d. All previous GMP and Change Order Clarifications apply.

e. Final pricing does not include any costs associated with the removal, storage, and/or
replacement of signage, plants, trees, or fencing.

EXHIBIT B

IGMP PROPOSAL FOR CITY OF CHANDLER - DETROIT BASIN/GAZELLE MEADOWS PARK 08-29-24
STORM DRAIN, SEWER AND WATERLINE IMPROVEMENTS ae
PROJECT NO.: $T2101.401

IACHEN-GARDNER CONSTRUCTION PROJECT NO. 4000101 Seas.
CO-4 EXHIBIT B1: SCHEDULE OF VALUES FOR ADA RAMP AND RELATED CONCRETE ITEMS
IACHEN-GARDNER CONSTRUCTION, LLC
2195 W Chandler Boulevard, Suite 200
CHANDLER, AZ 85224

PAYITEM |DESCRIPTION UM |QUANTITY| UNIT PRICE TOTAL NOTES
Final Scope of ADA Ramps Replacements
1 Area No. 1 EA 1.0) § 10,923.51] $ 10,923.51
2 Area No. 2 EA 10}$ _1,179.25| $ 1,179.25
3 Area No. 3 EA 10} $ 11,190.29 | $ 11,190.29
4 Area No. 4 EA 10}$ 1,523.39] $ 1,523.39
5 Area No. 5 EA 1.015 455.40 | $ 455.40
6 Area No. 6 EA 1.0] $ 317.44 | $ 317.44
7 Area No. 7 EA 10)/§ 9,823.07] $ 9,823.07
8 Area No. 8 EA 101s 3,894.47] $ 8,894.47
9 Area No. 9 EA 1.0/§ — 10,967.40|$ _ 10,967.40
10 Area No. 10 EA 1.01 § 262.20 | $ 262.20
11 Area No. 11 EA 1.0}$ —10,398.92|$ _ 10,398.92
12 Area No. 12 EA 10)$ 1,651.25] $ 1,651.25
13 Area No. 13 EA 10)$ 2,649.60] $ 2,649.60
14 Area No. 14 EA 1.0] $ 14,889.00 | $ 14,889.00
15 Area No. 15 EA 1.0}$ 1,398.40] $ 1,398.40
16 Area No. 16 EA 1.0}$ _ 6,837.77| $ 6,837.77
17 Area No. 17 EA 1.0/§ 10,660.99] $ _ 10,660.99
18 Area No. 18 EA 1.0)§ 10,017.75] $ _10,017.75
19 Area No. 19 EA 10 699.20 | $ 699.20
20 Area No. 20 EA 1.0/§ _1,398.40| $ 1,398.40
21 Area No. 21 EA 10/$ _1,136.20| $ 1,136.20
22 Area No. 22 EA 10/§ _9,956.88| $ 9,956.88
23 Area No. 23 EA 10}$ 11,517.78|$ —_11,517.78
24 Erie Street and Nevada - SW corner EA 1.0} § 15,223.94] $ 15,223.94
25 Erie Street and Nevada - SE corner EA 1.0) § 19,091.70|$ _ 19,091.70
26 Ithica and Erie - SW & SE corners EA 2.015 14564.74|$ _ 29,129.48
27 Jackson and Erie - SW corner EA 1.0) § 10,428.05|$ _ 10,428.05
28 Jackson and Erie - SE corner EA 1.0}§ 10,781.28] $ 10,781.28
29 Erie and Williams - SW corner EA 10/$ —11,063.88|$ _ 11,063.88
GENERAL CONDITIONS Mo 1.25[$ 101,968.24] § 127,460.30
SUBTOTAL - OVERHEAD AND FEE $ 127,460.30
10100]OVERHEAD AND FEE EXHIBIT D2, (C) 8.50% $ 30,763.81
SUBTOTAL - OVERHEAD AND FEE 30,763.81
10200] INSURANCE (INCL. BUILDERS RISK & POLLUTION EX 1.95%] (Calc on RT #1) 7,657.47
10300/BONDS (PAYMENT & PERFORMANCE) EX 0.80%] (Calc on RT #1) | § 3,141.53
SUBTOTAL - INSURANCE AND BONDS $ 10,799.00
‘10400]SALES TAXES (5.07% or 7.8% of 65% of Running Total No. 5.070% $20,456.94
20,456.94