Hopf Environmental’s Environmental Site Assessment (ESA) reports meet All Appropriate Inquiries requirements.  Reports are based on ASTM E1527-13 "Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment".   The ASTM E1527-13 Standard was approved by the US EPA and replaces ASTM E1527-05 “Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Processes”.  ASTM E1527-13 is more thorough than ASTM E1527-05 and requires consideration of vapor intrusion risks, controlled recognized environmental condition (CREC), and redefines historical recognized environmental condition (HREC) and requires determination if the HREC is indeed an REC.    

Listed below is the table of contents from one of our recent reports:

1.0          INTRODUCTION               

1.1          Purpose              

1.2          Scope of Work  

1.3          Limitations         

1.4          User Reliance    

1.5          Limiting Conditions        


2.0          SITE DESCRIPTION          

2.1          Site Location and Legal Description         

2.2          Current Property Use    

2.3          Current Use of Adjacent Properties         

2.4          Physical Setting Sources

2.4.1      Topography       

2.4.2      Hydrology          

2.4.3      Geology/Soils   

2.4.4      Flood Zone Information


3.0          HISTORICAL INFORMATION       

3.1          Aerial Photograph Review           

3.2          Fire Insurance Maps      

3.3          City Directories

3.4          Historical Topographic Maps      


4.0          REGULATORY RECORDS REVIEW              

4.1          Regulatory Agencies      

4.1.1      State Department           

4.1.2      Health Department        

4.1.3      Fire Department             

4.1.4      Air Pollution Control Agency      

4.1.5      Regional Water Quality Agency 

4.1.6      Department of Toxic Substances Control              

4.1.7      Building Department     

4.1.8      Planning Department    

4.1.9      Oil & Gas Exploration    

4.1.10    Assessor’s Office             

4.2          Mapped Database Records Search           

4.2.1      Regulatory Database Summary 

4.2.2      Subject Property Listings              

4.2.3      Adjacent Property Listings           

4.2.4      Sites of Concern Listings               

4.2.5      Orphan Listings



5.1          Interviews         

5.1.1      Interview with Owner   

5.1.2      Interview with Report User         

5.1.3      Interview with Key Site Manager              

5.1.4      Interviews with Past Owners, Operators and Occupants 

5.1.5      Interview with Others   

5.2          User Provided Information         

5.2.1      Title Records, Environmental Liens, and AULs

5.2.2      Specialized Knowledge 

5.2.3      Actual Knowledge of the User   

5.2.4      Valuation Reduction for Environmental Issues    

5.2.5      Commonly Known or Reasonably Ascertainable Information       

5.2.6      Previous Reports and Other Provided Documentation    



6.1          General Site Characteristics        

6.2          Potential Environmental Hazards              

6.3          Non-ASTM Services       

6.3.1      Asbestos-Containing Materials (ACMs)  

6.3.2      Lead-Based Paint (LBP) 

6.3.3      Radon  

6.3.4      Lead in Drinking Water 

6.3.5      Mold    

6.4          Adjacent Property Reconnaissance




9.0          REFERENCES

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