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Messrs. Refer and Molen February 1, 2005 <br />M-1999-034 Page 2 <br />Monitoring Plan <br />The Division still needs to receive an overall monitoring plan that incorporates sampling protocol, but <br />also addresses the entirety of the Order. <br />Per the Order, please include: <br />1. The analytical method to be used to analyze for DIMP. Is it consistent with what the Army uses at <br />RMA? <br />2. "An agreement to submit the results of the analyses to the Division within 30 days of the sampling <br />date." <br />3. A statement that those collecting and analyzing the samples are certified to perform that work. <br />4. Note the required sampling frequency for each site. <br />5. For QA/OC purposes, every tenth sample, collect and analyze duplicate samples. Additionally, <br />lab-specifred QA/QC practices, such as periodic blanks, should be followed. <br />Since the Order requires notification and a response plan for any DIMP detected above 8 pg/L, the <br />monitoring plan should include this course of action. <br />As discussed in our October 26, 2004 meeting, the pre-mining sample of the well needs to be <br />repeated since the purge time was 4-7 minutes, instead of the minimum 12 minutes needed for three <br />casing volumes. The August 6, 2003 lake sample is acceptable. <br />Lake Sampling Protocol <br />1 Introduction <br />1. Update the reference and the link to the TCEQ lake sampling procedures. <br />2. Note that the Tri-County Health Department protocols were also consulted. <br />2 Project Description <br />• In the first sentence, please change "irrigation well" to "lake." <br />3 Preparation <br />1. Please separate preparation activities from equipment needed. <br />2. Confirm sample bottle size. Field notes from the August 2003 samples say 2.5 L versus 1 L noted <br />here. <br />3. Include extra sample bottles and lids in the materials list, in case either is dropped. <br />4: Uo the bottles have Teflonlinetl-lids,-a~ nbte~Rsthe~~Q~amptirrg~5rocedures? Does the lab <br />completely prepare the sample bottles (i.e. pre-rinse with one of the listed solvents in the TCEQ <br />document for semi-volatiles)? <br />5. What kind of "Information on the specific laboratory analysis to be performed" is needed? <br />4 Sampling Method <br />1. How will the depth at which the sample is taken be measured? <br />2. What will be the sampling point, once the lake water level is dropped up to 15 feet? Are any <br />contingencies needed during dewatering, such as sampling from the discharge of a settling pond, <br />to avoid particulate interference? Please include a map showing the sampling points(s). <br />3. What information will appear on the sample label? <br />4. Include that the sample must be kept in the dark (on ice). <br />5 Field Data and Reporting <br />• Just to clarify, are any preservatives expected to be used? <br />7 Sample Delivery <br />• Please place a deadline for sample delivery to the lab (within 24 hours?). <br />