721 E MARINE VIEW DR 2016-01-01 MF Import

' MEMORANDUM _ Date: Maro6 12, 1993 To: Melody L. pllea, Projxt Manager — From: Robert Salisbury, Staff C6emist Subject: Data Validation Revicw -. TPH 418.1 M Soil Da4 City of Bverott Proposed NoAh-East View Park, 03352-021-005 The data va(idation roviaw of 2 soil semples collxted on Febcuary 2, 1993, hu bew completed, 'llie sampks wece analyzed for W W petroleum hydra:atbons(TpI�heavier then diesel by D&M Lbontories(D&M) �ocatad ia PUaluma, Califomia. TLe andyses were performed using method WTPH 418.1 Modifed in accordance with Appendix L of the Quid�nce for Remediation of Releases From Underground Stonge Tanks (Washington - Departmeat of Ecology, April, 1992). Summsries of the armple data and laboratory QC da4 wero providad by D&M. 1'he following samples aro e.s.sociated with IabonWry ase number(or accassion aumber) 930258: Sampla Number D&M Number . TP-3A-1 34786 TP-3A-2 34787 Tue following commeats refer to D&M's perfarmance in meeting the quality control specifications described in Appendix L of the Washington DOE document "Guidance for Remediation of ReleasPs From _ Underground SWrage Tanks,' April, 1992. _ 1. Holding Time- Acceptable ' 2. Blanks - Acceptable 3. Labowtory Duplicate Malysis Sample TP-3A-1 was usal for the duplicate azaysis. The relative percent difference (RPD)was 45.45b. ' The method does not specify quality control limits for duplicate analysis, therefore the sample results were not qualified based on the results of the duplicate analysis. .1 4. Reported Detection Limits- Acceptable � � S. Type of Da4 Yalidation Review- Summary .. 6. Overall Assessment of Data The usefulness of the data is bnsed on the Ecology guidence document listed above. Upon consideration � of the information presented above., the date are acceptable except where Flagged with data qualifiers which malify the usafulness of the individual values.