SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

' � s California Regional Water Quality Control Board < Central Valley Region Robert Schneider,Chair Winston H.Hickox Gray Davis Secretaryfor Sacramento Main Office Governor Environmental Internet Address: http://www.swrcb.ca.gov/mgcb5 Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 Phone(916)255-3000•FAX(916)255-3015 n q q p D 4 June 2001 JUN 0 6 2001 Brad Frahm Siebold Corporation ENVifSERViCES HEALTH 5835 East Cherokee Road#98 PER f/oC Stockton, CA 95215 REQUEST FOR WORKPLAN, FORMER SIEBOLD CONSTRUCTION, 820 SOUTHAMERICAN STREET, STOCKTON, SAN JOA Q UIN CO UNTY In a registered letter from this office dated 13 February 2001, Board staff requested you to submit a plan of work by 2 April 2001 to delineate the lateral and vertical extent of contamination at the former Siebold Construction property in Stockton. We received your letter response dated 30 March 2001 stating that you are financially unable to complete the required work. On 2 April 2001,Board staff completed a site visit, and noted that your former office buildings and property are being utilized for operations and storage by Quickcrete, a neighboring concrete products manufacturer. Quickcrete must be compensating you for the use of the property, and possibly, you can make arrangements with Quickcrete to assist in the required investigation. Board staff has also been in phone contact with you, and requested you to reapply to the UST Cleanup Fund for financial assistance in investigation of this former underground storage tank (UST) site. With your approval, Board staff collected a groundwater grab sample on 24 April 2001 from the one on-site monitoring well to test for the presence of MtBE(see attached photographs of site). The well was not purged prior to sample collection. The groundwater sample was collected using a weighted disposable polyethylene bailer dropped to the bottom of the monitoring well. The groundwater sample was transferred directly from the disposable bailer into 40-milliliter volatile organic ampules (VOAs) provided by the laboratory. The sample VOAs were labeled, placed directly into a pre-cooled ice chest with ice, and submitted to California Laboratory Services (CLS) in Rancho Cordova for analysis by EPA Method 8260B. The sample was designated "SCM-1" for Siebold Construction monitoring well #1, and the trip blank was designated "TCMW-2". During sample collection, a strong gas odor was detected from the groundwater sample. MtBE was not identified in the sample at a reporting limit of 0.5 micrograms per liter(µg/1); however, toluene, ethyl benzene, xylenes, and other weathered gasoline constituents were identified above taste and odor thresholds. It should be noted that these sample results are from a groundwater grab sample, and a purged groundwater sample will yield different results and may contain MtBE. A copy of the CLS analytical results and laboratory quality assurance/quality control documents are attached. California Environmental Protection Agency Crecycled Paper The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://vrmv.sweb.ca.gov/nvqcb5