From:
To:
Cc:
Yu Helen@Waterboards
Angulo. Joseph
Elwin. Ken
Subject:
Date:
RE: Additional PFAS Sampling at Merced Airport
Monday, July 25, 2022 3: 12:00 PM
Hello Mr. Angulo,
Thanks for reaching out.
Considering that the AOF method is relatively new, I think a six-month extension of the PFAS analysis results can be granted to accommodate the procurement of the appropriate lab service for that method. The new due date for the PFAS sampling and analysis results as required in our June 21, 2022 letter is May 1, 2023. Please note that this extension of due date does not apply to the monitoring for chlorinated solvents at the subject facility as required in MRP RS-2011-0808. The due date for the next Semi-annual Groundwater Monitoring Report for chlorinated solvent monitoring is still November 1, 2022.
Please let me know if you have any questions about the above message. Thank you.
Sincerely,
Helen
Xueyuan (Helen) Yu, PhD, PE,
Senior WRCE Specialist - UST Program
California Regional Water Quality Control Board
Central Valley Region - Sacramento
I I 020 Sun Center Drive, #200
Rancho Cordova, CA 95670
Office: 916-464-4 729
Hel [email protected]
SAVE OUR
W ER
From: Angulo, Joseph <[email protected]>
Sent: Monday, July 25, 2022 2:35 PM
To: Yu, Helen@Waterboards <[email protected]> Cc: Elwin, Ken <[email protected]>
Subject: RE: Additional PFAS Sampling at Merced Airport EXTERNAL:
Good afternoon Ms. Yu- the City of Merced (City) is in receipt of the RWQCB's June 21, 2022, letter regarding groundwater sampling for PFAS at the Merced Regional Airport. The City respectfully requests a six-month time extension for the November 1, Attachment 4