CORRESPONDENCE_2017 - Laserfiche WebLink

Home Browse Search

Page 2 Brusca File No. 137-002 August 10,2017 Murphy Parkway Property Soil Gas Monitoring Workplan SITE DESCRIPTION AND BACKGROUND Site Location and Description The approximate 48-acre subject property is located about 500 feet easterly of Murphy Parkway and about 1,500 feet southerly of East Louise Avenue in a commercial and industrial area of Lathrop, San Joaquin County, California. The subject property is currently vacant/undeveloped land. The site is generally flat; however,portions of the site are irregular and hummocky, and two depressed areas are situated on the northwesterly portion of the site. Portions of the site are currently used for livestock grazing; wire fencing is in place on portions of the site for livestock enclosure purposes. A Vicinity Map showing the location of the property is presented as Plate 1, and a Site Map is presented as Plate 2. Historical Site Activities The subject property historically was vacant farmland. In the early 1960s, a large glass manufacturing facility (currently referred to as former Pilkington North America [PNA] facility) was constructed directly northerly of the subject property. The subject property was associated with the former PNA facility, and was used for solid waste handling and waste water disposal related to the PNA facility. Solid wastes comprised largely of waste glass materials were handled within the northwesterly portion of the subject 48-acre site. Glass manufacturing activities at the former PNA facility were discontinued a few years ago. In recent years, the subject 48-acre site generally has been unused, except for some livestock grazing. Industrial and domestic waste water generated at the former PNA facility northerly of the subject property was treated at that site, and disposed at that facility, and also on the subject 48-acre property via spray irrigation. The treated waste water discharge was performed under permit with the Central Valley Regional Water Quality Control Board (CVRWQCB). Because the subject 48-acre property is no longer intended for waste water discharge, the CVRWQC13 is currently considering removing this area from the waste water discharge permit. Past Onsite Waste Investigations and Remedial Work It is indicated that the handling of glass wastes on the subject property ceased in the 1980s. Around 2012, the local oversight agency(SJCEHD) required the placement of a soil cap over the northwesterly portion of the property where residual glass wastes were known to exist. A Soil Cover Workplan was prepared in early 2013, and the capping work was implemented in late 2013.1 The general area of the cap is shown on Plate 2. In 2014 and 2015, a substantial amount of investigation and waste characterization was performed on the subject property by AGE; the results were presented in a report dated June 15, 2016.2 The 2014 and 2015 investigative work was performed to evaluate the limits and nature of ' Antea Group; "Soil Cover Workplan, Former Cullet Staging Area, Pilkington North America, Inc., 500 East Louise Avenue,Lathrop,California";May 22,2013. 2 Advanced GeoEnvironmental, Inc.; "Summary of SWIS Investigation, Waste Characterization/Disposal, Former Pilkington North America—Lathrop Facility, 17100 Murphy Parkway, Lathrop, San Joaquin County, Solid Waste Information System(SWIS)Number 39-CR-0022';June 15,2017.