Laserfiche WebLink
Mike Infurna <br /> From: Amy Terrell [Terre IA@rb5s.swrcb.ca.gob] <br /> Sent: Tuesday, December 31, 2002 7:39 AM <br /> To: Devra Lewis <br /> Subject: Re: Gat a question <br /> Good day Devra, <br /> and happy holidays to you too! <br /> If one is looking in general for pesticides/herbicides/whatever in soil <br /> and has unlimited funding, we would ask for the following scans: <br /> organochlorine compounds by EPA Method 6081 <br /> chlorinated herbicides by EPA Method 8151 <br /> carbamate/urea compounds by EPA Method 8321 <br /> triazine compounds by EPA Method 619 <br /> other pesticide/herbicide analyses that could be asked for but I <br /> wouldn't recommend are organophosphate compounds (8141) since they <br /> degrade readily and are seldom found in soil or groundwater <br /> and volatile organics (8260 or 8021) since the stormwater went through <br /> at least a clarifier and probably other water treatment processes prior <br /> to the clarifier that it would seem unlikely that they would emerge in <br /> the effluent intact. <br /> Similar reasoning goes for nitrate and ammonium (EPA 300 and 350) since <br /> the water treatment processes probably denitrified those compounds. <br /> Amy Terrell <br /> (916) 255-3080 <br /> »> Devra Lewis 12/30/02 02 :47PM »> <br /> I hope you had a great Christmas ! <br /> I have a question for you. Mike. infurna called me because he has a <br /> CalTrans site that they are trying to close the leach field. He said <br /> that runoff water went through a clarifier and then to the leach field, <br /> but he wants soil samples for pesticides to make sure everything is <br /> okay. What analytical method(s) would you ask for under these <br /> circumstances? <br /> Thanks, <br /> Devra <br /> 1 <br />