Acceptable. 2 The requested Method must be in 40 CFR N/A method for pH, EPA accordance with 136.3 Update pH SOP 150.2, is not 40 CFR 136. to include consistent with KY DOW has inserted SM WWCM1 year of SM the method 4500 H+ B-2000 as the Chapter committee detailed in the method for TSS on the II approval for laboratory’s SOP laboratory’s Section the specific (PROC.052.001). list. Please 10 version of EPA 150.2 is an confirm which approved the method in automated method the laboratory will use (SM 4500 procedure. EPA be using and update H+ B-2000). 150.1 is the documents accordingly. electrode method Document will Note: SM 4500 H+ B-2011 similar to the be reviewed (SM 22nd Ed.) is also method described at time of approved as a test method in the SOP. on-site for pH. However, EPA 150.1 audit. is not currently approved by the EPA to be used for wastewater compliance.
2 The requested method for pH, EPA 150.2, is not consistent with the method detailed in the laboratory’s SOP (PROC.052.001). EPA 150.2 is an automated procedure. EPA 150.1 is the electrode method similar to the method described in the SOP. However, EPA 150.1 is not currently approved by the EPA to be used for wastewater compliance. Method must be in accordance with 40 CFR 136. KY DOW has inserted SM 4500 H+ B-2000 as the method for TSS on the laboratory’s list. Please confirm which approved method the laboratory will be using and update documents accordingly. Note: SM 4500 H+ B-2011 (SM 22nd Ed.) is also approved as a test method for pH. 40 CFR 136.3 WWCM1 Chapter II Section 10 Acceptable. Update pH SOP to include year of SM committee approval for the specific version of the method in use (SM 4500 H+ B-2000). Document will be reviewed at time of on-site audit. N/A