August 2018 | Geological and Environmental Hazards Assessment Report PROPOSED PROMENADE SCHOOL SITE Dublin Unified School District Prepared for: Dublin Unified School District Contact: Joe Sorrera 7471 Larkdale Avenue Dublin, California 94568 925.828.2551 Prepared by: PlaceWorks Contact: Michael Watson, PG Associate Geologist 2850 Inland Empire Boulevard, Suite B Ontario, California 91764 909.989.4449 [email protected] www.placeworks.com PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDS ASSESSMENT REPORT DUBLIN UNIFIED SCHOOL DISTRICT Table of Contents Section Page 1. Introduction .................................................................................................................................................... 1 1.1 INTRODUCTION .............................................................................................................................. 1 1.2 PROJECT LOCATION ...................................................................................................................... 1 1.3 PROJECT DESCRIPTION ............................................................................................................... 1 1.4 CONCLUSIONS/RECOMMENDATIONS ................................................................................. 1 2. Environmental Checklist ............................................................................................................................... 7 2.1 STATE STANDARDS FOR SCHOOL FACILITIES .................................................................. 7 3. Environmental Analysis .............................................................................................................................. 11 3.1 AIR QUALITY ................................................................................................................................... 11 3.2 GEOLOGY AND SOILS ................................................................................................................ 12 3.3 HAZARDS AND HAZARDOUS MATERIALS ....................................................................... 14 3.4 HYDROLOGY AND FLOODING ............................................................................................. 16 3.5 LAND USE AND PLANNING ..................................................................................................... 17 3.6 NOISE .................................................................................................................................................. 18 3.7 PUBLIC SERVICES .......................................................................................................................... 18 3.8 TRANSPORTATION/TRAFFIC .................................................................................................. 19 3.9 EXEMPTIONS TO SITING STANDARDS .............................................................................. 20 4. References ................................................................................................................................................... 21 4.1 PRINTED REFERENCES ............................................................................................................. 21 4.2 WEB SITES ......................................................................................................................................... 21 5. List of Preparers .......................................................................................................................................... 23 5.1 LEAD AGENCY ............................................................................................................................... 23 5.2 PLACEWORKS ................................................................................................................................. 23 APPENDICES Appendix A Health Risk Assessment Screening Appendix B Agency Information Appendix C Terraphase Engineering, Inc. Draft Phase I Report (in process) August 2018 Page i PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDS ASSESSMENT REPORT DUBLIN UNIFIED SCHOOL DISTRICT Table of Contents LIST OF FIGURES Figure Page Figure 1 Regional and Vicinity Map .................................................................................................................. 3 Figure 2 Project Site ............................................................................................................................................. 5 Page ii PlaceWorks 1. Introduction 1.1 INTRODUCTION This report has been prepared for the proposed Promenade School Site (proposed project) and provides an evaluation on whether the proposed project conforms to the state school facility standards, which apply to state-funded new school facilities projects. The State of California’s standards for school site selection are found in Title 5 of the California Code of Regulations (CCR) Section 14010; additional codes and regulations applicable to school facilities are found in the Education, Government, and Public Resources Codes. 1.2 PROJECT LOCATION The project site (Site) is a vacant lot located at the southeast corner of Central Parkway and Chancery Lane in the City of Dublin, Alameda County, California (Assessor’s Parcel Numbers [APNs] 985-78-2, -3, -4, -5, -6 and -7). Regional access to the proposed school is provided by Interstate 580 (I-580), located to the south. The City of Dublin is surrounded by San Ramon and unincorporated Contra Costa County to the north, unincorporated Alameda County to the east and west, and Pleasanton and Livermore to the south and southeast, respectively. Figure 1, Regional and Vicinity Map, and Figure 2, Project Site, show the project site in its surrounding and local contexts. 1.3 PROJECT DESCRIPTION Dublin Unified School District is evaluating the vacant lot located at the southeast corner of Central Parkway and Chancery Lane in Dublin (Site) for possible site acquisition for a new school site. The Site is approximately 23 acres in size. 1.4 CONCLUSIONS/RECOMMENDATIONS Based on a review of various information sources contained in this report, the following potentially environmental health and safety hazards are subject to further evaluation: The southwest corner of the project site is mapped within a liquefaction zone by the State of California. Further geotechnical investigation would be required during the design phase of the project for proper site-specific mitigation. Livermore Municipal Airport is located within two nautical miles southeast of the project site. CDE performed an initial school site evaluation that recommended a Caltrans Airport Assessment. California Department of Transportation [Caltrans] assessed the project and identified that the site is within the Airport Influence Area of Livermore Municipal Airport in the Alameda County Airport August 2018 Page 1 PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDS ASSESSMENT REPORT DUBLIN UNIFIED SCHOOL DISTRICT 1. Introduction Land Use Compatibility (ALUC) Plan, which recommends that an avigation easement restricting the heights of buildings or trees be dedicated to the City of Livermore. A Preliminary Environmental Assessment is currently in preparation based on the historical agricultural use of the site. The District would need to coordinate with the City of Dublin and the Dublin San Ramon Services District to modify existing easements for water lines and emergency access on the site. The existing easements were dedicated with the assumption that the site would be used for residential land use. A school land use would require modification and/or elimination of the existing easements. Page 2 PlaceWorks PROPOSED PROMENADE SCHOOL SITE DUBLIN UNIFIED SCHOOL DISTRICT GEOLOGICAL AND ENVIRONMENTAL HAZARDS ASSESSMENT REPORT Contra Costa County PROPOSED PROMENADE SCHOOL SITE PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDSDUBL IASSESSMENTN UNIFIED SCHO OREPORTL DISTRICT GEOLOGICAL AND ENVIRONMENTAL HAZADUBLINRDS AUNIFIEDSSESS SCHOOLMUEnNiTn RDISTRICTcEPoOrpRTorated 1.A Introductionlameda County Contra Costa County Unincorporated Alameda County City of Dublin d a o City of DubliR n a r a j a s s a d T a o R F a a r l l a o Gleason Drive j a n s s PROJECT SITE R a o T a d F a l l Gleason Drive o n PROJECT SITE R o Du a blin B d oulevard Dublin B oulevard %&('580 O w e 580 ns %&(' D City of City of r %&'(5 O w Pleasanton Livermore en s City of City of D 5 Stockton r Wr alnut %&'( D Creek Pleasanton Livermore a d Stockton r Walnut n 680 SanD Oakland %&'( e i Creek a Dublin Francisco c d 580 Tracy a %&'( n 680 San OakSlan d %&'( Sa e H i Dublin n Unincorporated Francisco c Francisco Livermore Hayward 580 Tracty e a %&'( Sa a l San H Bay C Francisco Livermoren R UnincorAploaramteedd a County h Hayward t i e a a t l Palo a r Bay C r R Alameda County h o %&'(880 R Alto i t a Palo d r R a r o o %&'(880 R a Alto R d d o %&'(280 a d %&'(280 San Jose 0 0.125 0.25 0.5 San Jose 0 0.125 0.25 0.5 Miles Miles Source:Sourc ESRI,e: ES 2017.RI, 20 PlaceWorks,17; PlaceW 2018.orks, 2018. Source: ESRI, 2017; PlaceWorks, 2018. Figure 1 Figure 1 Figure 1 ProPjercotjSeitcetSite DubliDn uCbityli nLi mCiitty Limit Regional and Vicinity Map Regional Ranedg iVoincianli tayn Mda Vpicinity Map PlaceWorks PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDS ASSESSMENT REPORT DUBLIN UNIFIED SCHOOL DISTRICT 1. Introduction This page intentionally left blank. Page 4 PlaceWorks PROPOSED PROMENADE SCHOOL SITE GEOLOGICAL AND ENVIRONMENTAL HAZARDS