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Home My WebLink AboutEnvironmental Science Associates (ESA) 2022-03-08; Amendment 1 2022-06-30 COU 2122-203-A1 CITY OF UKIAH AMENDMENT NO. 1 TO PROFESSIONAL SERVICES AGREEMENT BETWEEN ENVIRONMENTAL SCIENCE ASSOCIATES and THE CITY OF UKIAH This Amendment No. 1, entered on June 30, 2022 revises the Agreement for Professional services dated March 8, 2022 between the City of Ukiah and Environmental Science Associates (ESA), for professional consulting services relating to soil sampling at Riverside Park in support of the Riverside Park Regeneration Project. This Amendment No. 1 adds a second round of soil sampling, and an additional $8,352, as described in Exhibit 1. This revises the total, not-to-exceed amount to $16,752. Except as expressly amended by this Amendment, all other terms remain unchanged and in full force and effect. IN WITNESS WHEREOF, THE PARTIES HAVE EXECUTED THIS AMENDMENT ON THE EFFECTIVE DATE: ENVIRONMENTAL SCIENCE ASSOCIATES (ESA) BY:I129 Role 14:26 PDT) DATE: 07/27/22 sa Moore(Jul 27,2022PRINT NAME: A l i s a Moore CITY OF UKIAH DATE: Aug 10, 2022 SAGE SANGIACOMO, CITY MANAGER ATTEST BY:Kristine Lawl 2022 07:41 PDT) DATE: Aug 10, 2022 KRISTINE LAWLER, CITY CLERK �� 1425 N.McDowell Boulevard,Suite 200 www.esassoc.com Petaluma,CA 94954 J 707.795.0900 EXHIBIT 1 May 19, 2022 Ms. Michelle Irace,Planning Manager Department of Community Development 300 Seminary Avenue,Ukiah, CA 95482 Sent via email: mirace@cityofukiah.com Subject: Second Round Soil Sampling at Proposed Ukiah Riverside Park Ukiah, California Dear Ms. Irace: Environmental Science Associates (ESA)is pleased to offer the City of Ukiah this scope of work and budget estimate to conduct a second round of soil sampling for the Ukiah Riverside Park Project in Ukiah,California. ESA conducted a soil sampling and analysis investigation that revealed one area at the location of Soil Sample S-2 that has chlordane and DDT in soil at concentrations that may limit the reuse of soil and may require disposal. The draft report documenting the investigation and discussing the results was provided to the City in a report dated April 21, 2022. Scope of Work Using the information acquired from the first soil sampling investigation, ESA will collect and chemically analyze a total of 8 soil samples from 4 step-out locations in a circle at 50 feet from the location of Sample S-2. The attached grading plan shows the sample locations in red and the table below lists the four proposed sample locations and the estimated depth of proposed excavation at each location. Test Pit Existing Proposed Elevation Elevation Elevation Decrease S-2 587.5 586.5 1.00 S-2-NW 588.5 587.25 1.25 S-2-SW 587.75 587 0.75 S-2-NE 587.75 586.75 1.00 S-2-SE 588.25 587.5 0.75 We understand that the City will provide a backhoe and operator to excavate pits at each sample location. The sample depths will be determined by examining the sidewalls and bottom of each pit. One soil sample will collected from each location at about 6 inches below the ground surface(bgs). A deeper sample will be collected at 6 inches below the proposed depth of excavation for the proposed Riverside Park project, estimated to be no more than 2 feet bgs at each of the four locations. The soil samples will be sealed in their sampling containers, labeled with a unique identification number,placed in an ice chest with ice for preservation, and delivered to McCampbell Analytical Laboratory, a state-certified analytical laboratory, along with chain-of-custody documentation. Based on the previous analytical results,the soil samples will be analyzed for organochlorine pesticides by EPA Method 8081A and lead by EPA Method 6010C/6020A. r- ESA May 19, 2022 Page 2 The lead concentrations will be compared first to background levels from published studies to identify those chemicals that are present at naturally occurring background levels. General background levels are available from Shakelette,Hansford T. and Josephine G. Boerngen, 1984,Element Concentrations in Soils and Other Surficial Materials of the Conterminous United States,USGS Prof. Paper 1270. All of the chemical cons will be compared to the 2019 Environmental Screening Levels(ESLs) developed by the San Francisco Bay Regional Water Quality Control Board(RWQCB).ESLs are screening levels used by regulatory agencies throughout the state to assess whether further investigation and possibly cleanup is needed at sites where hazardous materials are suspected to have been spilled. ESLs are risk-based levels based on both human health and ecological habitat,which can provide comparative guidance as to whether a given chemical is present in soil at levels that might be unsuitable for a wetland habitat. Upon receipt of the analytical results,ESA will prepare a draft report that incorporates the results of the first sampling event,documenting both investigations,tabulating the results, comparing the results to the ESLs, and providing recommendations for the management of the soil. ESA will provide one electronic draft report for your review and comment, followed by one final electronic report. Assumptions The following assumptions were made in preparing this scope of work: • The City will provide or arrange right-of-entry and unrestricted access to the property. • The City will provide a backhoe and operator. • The soil sampling can be completed in one day. • One electronic copy of the draft and final report of findings. Budget Estimate The budget for the above-described scope of work is estimated at$8,352 and will be invoiced on a time-and- materials basis. ESA will invoice the City only for hours actually expended on this project. This estimate is not expected to be exceeded unless there is a change to the scope from conditions encountered or in response to a request from the City. In the event of a change to the scope,the City will be informed as soon as possible of the change and its effect on the budget, if any.At no time will ESA exceed this initial estimate without prior written authorization from the City. This task can be authorized by the City as Task 2 using the existing contract between the City and ESA. We thank you for the opportunity to provide environmental consulting assistance and are prepared to schedule the work at your convenience and upon your written authorization. If you have any questions or would like additional information,please contact us. Sincerely, Michael G. Burns,PG,CEG, CHG D201801242 .01 Amendment 1 - C#2122-203 - ESA Riverside Park Soil Sampling Final Audit Report 2022-07-27 Created: 2022-07-27 By: Sabrina Joy(Sjoy@esassoc.com) Status: Signed Transaction ID: CBJCHBCAABAAwmP4mZNI1xOQQpURk-1FUF-myldBQmpP "D201801242.01 Amendment 1 - C#2122-203 - ESA Riverside Park Soil Sampling" History Document created by Sabrina Joy (Sjoy@esassoc.com) 2022-07-27-9:25:13 PM GMT Document emailed to Alisa Moore (amoore@esassoc.com)for signature 2022-07-27-9:25:48 PM GMT Email viewed by Alisa Moore (amoore@esassoc.com) 2022-07-27-9:26:06 PM GMT -o Document e-signed by Alisa Moore (amoore@esassoc.com) Signature Date:2022-07-27-9:26:19 PM GMT-Time Source:server Agreement completed. 2022-07-27-9:26:19 PM GMT Powered by Adobe Acrobat Sign