ITEM 5 EXHIBITS A-H - Laserfiche WebLink

4400 Black Avenue Pleasanton, California 648-26-2 Page 22 8.4 INTERVIEWS WITH PREVIOUS OWNERS AND OCCUPANTS Contact information for previous Site owners and occupants was not provided to us. Therefore, interviews with previous Site owners and occupants could not be performed. 8.5 INTERVIEWS WITH STATE AND/OR LOCAL GOVERNMENT OFFICIALS Per the ASTM Standard, a reasonable attempt should be made to interview at least one staff member of any one of the following types of state and/or local government agencies: fire department, health department, building department, or other agency having jurisdiction over hazardous waste disposal or other environmental matters in the area. The Pleasanton Building Department, Livermore-Pleasanton Fire Department, and the Alameda County Department of Environmental Health were contacted 2 during this study. Livermore- Pleasanton Fire Department is the Certified Unified Program Agency (CUPA) responsible for implementing California’s Unified Hazardous Waste and Hazardous Materials Management regulatory program for properties within the City of Pleasanton. Files pertaining to the Site were requested from each of these agencies; a summary of the information obtained is provided in Section 4.2.1. SECTION 9: FINDINGS, OPINIONS AND CONCLUSIONS (WITH RECOMMENDATIONS) Cornerstone performed this Phase I ESA in general conformance with ASTM E1527-21 to support TTLC Management in evaluation of Recognized Environmental Conditions. Our findings, opinions and conclusions are summarized below. 9.1 HISTORICAL SITE USAGE Based on the information obtained during this study, the Site appears to have been undeveloped land until approximately 1972 when construction began on the existing commercial office structure. Properties adjacent to the Site appear to have historically consisted of rural residential with a dairy to the north from approximately 1939 until the 1970’s and high school to the south since approximately 1953. Single-family residential was constructed in the vicinity beginning in the 1960’s and a medical office park was constructed in the late 1970’s. The church and school located adjacent to the west were constructed in the 1980’s and 1990’s. 9.2 CHEMICAL STORAGE AND USE Chemical storage and use observed on-Site consisted of small quantities of chemicals that included janitorial and typical maintenance supplies. One flammables cabinet was observed. General housekeeping of chemical storage areas appeared orderly with no readily observable evidence of significant spills or leaks. An empty 55-gallon drum was observed within the outdoor covered recycling and trash sorting area. 2 Note that at some agencies, files are available on-line and accessed electronically via the agencies’ website. Based on our professional experience, the acquisition and review of Site-related files from these multiple agencies provides information that is more useful in the evaluation of Recognized Environmental Conditions than contacting a “staff member.” building department, or other agency having jurisdiction over building department, or other agency having jurisdiction over Fire Department,Fire Department,and the during this study.during this study. Livermore the Certified Unified Program Agency (CUPA) responsible for the Certified Unified Program Agency (CUPA) responsible for implementing California’s Unified Hazardous Waste and Hazardous Materials Management implementing California’s Unified Hazardous Waste and Hazardous Materials Management PleasantonPleasanton. Files pertaining to the Site were Files pertaining to the Site were from each of these agencies; a summary of the information obtained is provided in from each of these agencies; a summary of the information obtained is provided in PINIONS AND CONCLUSIONS (ONCLUSIONS (WITH Cornerstone performed this Phase I ESA in general Cornerstone performed this Phase I ESA in general conformance conformance withwith in evaluation of Recognized Environmental Conditions. Our in evaluation of Recognized Environmental Conditions. Our findings, opinions and conclusionsfindings, opinions and conclusions are summarized below.are summarized below. HISTORICAL SITE USAGEHISTORICAL SITE USAGE Based on the information obtainedobtained during this study,during this study,the the undeveloped land until approximately 1972approximately 1972 when construction began on the existing when construction began on the existing . . Properties adjacent to the Site appear to have historically consisted of Properties adjacent to the Site appear to have historically consisted of residential with a dairy to the north from approximately 1939 until the 1970’s andresidential with a dairy to the north from approximately 1939 until the 1970’s and the south since approximately 1953. Singlethe south since approximately 1953. Single beginning in the 1960’s and a medical office park was constructed in the late 1970’s. The beginning in the 1960’s and a medical office park was constructed in the late 1970’s. The church and school located adjacent to the west were constructed in the 1980’s and 1990’schurch and school located adjacent to the west were constructed in the 1980’s and 1990’s CHEMICAL STORAGE AND USECHEMICAL STORAGE AND USE Chemical storage and use observed onChemical storage and use observed on included janitorial and typical maintenance supplies. One flammables cabinet was observedincluded janitorial and typical maintenance supplies. One flammables cabinet was observed