Laserfiche WebLink
Donn L. Diebert <br /> Page 2 <br /> June 5, 1989 <br /> Conclusion <br /> The report of findings was found to be incomplete in the <br /> assessment of surface water runoff. As stated during the <br /> May 25, 1989, meeting with MCTC, a confirmation sampling round <br /> should be performed. Samples should be collected during the <br /> initial stages of the next storming event. Collection of <br /> samples should be from points identified on Figure 4-5 of <br /> MCTC' s March 15, 1988 , Current Work Plan (excerpted copy <br /> attached) . Analysis of samples should include both the <br /> determination of total and dissolved concentrations. <br /> CURRENT WORK PLAN, REVISED, MARCH 24 , 1989 <br /> Page 2-14 , Last Paragraph <br /> Point of clarification: TTLC values are defined in <br /> California Code of Regulations (CCR) , Article 11, <br /> Chapter 30, and are used in part to determine if a waste <br /> meets hazardous waste criteria. TTLC (and/or STLC: <br /> Soluble Threshold Limit Concentration) values do not <br /> establish cleanup levels. Cleanup levels will be based on <br /> the Health Risk Assessment currently being performed by <br /> MCTC. <br /> Page 2-37 , Last Paragraph <br /> The paragraph should be deleted or revised to reflect the <br /> above South Yard storm water program. <br /> Page 2-39 Paragraph 2 . 2 . 4 . 1 Marley Worker Exposure Summaries <br /> Discussion of the permissible exposure limits (PELs) for <br /> arsenic should be included. That is, can the conclusion <br /> as stated for chromium and copper be applied to arsenic? <br /> If not, discuss why not. <br /> Page 2-41 North Yard Dust Sample Results From October 1984 <br /> The "BDL" (Below Detection Limits) listed for arsenic <br /> should be presented in units of concentration, i. e. , mass <br /> per unit volume. A discussion of how the volumetric <br /> detection limit was arrived should also be included. <br />