AMENDMENT NO. 6
TO
Contract
NO. C1500059
BETWEEN THE
STATE OF WASHINGTON DEPARTMENT OF ECOLOGY
AND
CITY OF REDMOND
PURPOSE: To amend the Agreement between the state of Washington, Department of Ecology,
hereinafter referred to as “ECOLOGY,” and City of Redmond, hereinafter referred to as
“CITY” or “CONTRACTOR.”
WHEREAS, the original Contract No. C1500059 provided funding for a pilot street sweeping
effectiveness study as a task in the larger monitoring program. The City of Redmond
secured other funds to repeat the street sweeping study in another subbasin which will
occur over the next several years. The final report prepared for the street sweeping study
will be paid with separate funds and will be shared with Ecology but is not a deliverable
on this contract. Additional funds are needed to sample and analyze for a novel chemical
recently discovered to contaminate stormwater that are not currently part of this street
sweeping study.
WHEREAS, This amendment adds a new Task to add sampling and analyzing data for water
chemistry parameters in an already existing street sweeping study effort being conducted
by the City of Redmond. Results and findings will be combined with other data and
reporting that is planned under this contract’s Task E2.
IT IS MUTUALLY AGREED the Agreement is amended as follows:
1) Task E6.0: WY2023 Street Sweeping Chemical Analysis: Add water samples in the Tosh Creek
and County Creek watershed existing sampling effort for the parameters PAHs and 6PPD-
quinone. Use an accredited laboratory, or seek an accreditation waiver if no labs are accredited by
Ecology. Sample collection will follow the Addendum 1 to the Quality Assurance Project Plan
for the Redmond Paired Watershed Study (Herrera, 2022). This involves the collection of up to
twelve grab samples over the water year during storm events (three each quarter) at 4 stations. In
State of Washington Department of Ecology
Contract no. C1500059, Amendment 6
City of Redmond
Pg 2
addition, up to four grab samples will be collected over the water year during base flow (one each
quarter) at these stations. Costs for the additional work under Task E6.0 is $36,490.
Task E6.0 – Street Sweeping Chemical Analysis
Task/Deliverable Quantity
Unit
Cost
Total Costs
Target Dates /
Assumptions
Deliverable 6.1 Submit a QAPP addendum for approval
to Ecology.
1 $2,100 $2,100 9/30/2022
Deliverable 6.2 Unverified lab data 12 $2,390 $28,680
9/2022- 6/2023
Assumes sampling over
approximately 3 quarters;
4 samples collected per
quarter
Deliverable 6.3 Data validation memo
1
$1,650
$1,650
5/30/2023
Deliverable 6.4 Analytical data uploaded to the
Environmental Information Management (EIM)
database.
1 $870 $870 5/30/2023
Deliverable 6.5 Interim data analysis of the PAHs and
6PPD-quinone for WY 2023 Data Summary Report
under Task E2.
1 $2,300 $2,300
5/30/2023
5 to 10 page
memorandum
Deliverable 6.6 Fact sheet for interim analysis of the
PAHs and 6PPD-quinone for WY 2023 Data Summary
Report under Task E2.
1 890 $890 5/30/2022
E6 Task Total
$36,490
State of Washington Department of Ecology
Contract no. C1500059, Amendment 6
City of Redmond
Pg 3
All other terms and conditions of the original Agreement including any other amendments remain in full
force and effect, except as expressly provided by this Amendment.
This Amendment is signed by persons who represent that they have the authority to execute this
Amendment and bind their respective organizations to this Amendment.
This Amendment is effective on the Ecology signature date.
IN WITNESS WHEREOF, the parties below, having read this Amendment in its entirety, including any
attachments, do agree in each and every particular as indicated by their below signatures.
State of Washington
Department of Ecology
By:
Signature Date
Heather R. Bartlett
Deputy Director
City of Redmond
By:
Signature Date
Print Name
Title
