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APPENDIX A 



Sax Francisco Bay Marine Piling Survey 



PRELIMINARY QUESTIONNAIRE 



(To be answered separately for each structure) 



1. Name of company and officer reporting; address; date. 



2. Name, if any, of dock or other structure; and ownership if not as under No. 1. 



3. Location of structure. Date when first built. 



4. Give plan of structure, showing especially its projection from shore. 



5. Give profile of structure, showing water depth from shore line to outer end, 

 for mean low and mean high tides. 



6. Give for piling under structure : kind (when of wood, also species and whether 

 treated or untreated), number (of each kind), age, condition. 



7. Are marine borers attacking piling under this structure? If so, how serious 

 is the attack? If not, are they active anywhere in the immediate vicinity? 



8. Have you any data to show the life of untreated wooden piling in this structure 

 or location? How, if any, does that life vary from shore line to outer end of structure? 



9. What steps have been taken to protect this piling? Give dates, extent, and 

 cost of repairs or replacements due to borer attack. 



10. If piles are creosoted, have you any records of treatment a\ailable for study? 



IL If there are coverings or other protections aside from creosote, describe them. 



12. If piles are entirely of other construction than wood, what are they? 



IvS. Can you give any further detailed information, such as salinity measure- 

 ments, tidal and current movements, sewage or debris present in surrounding water, 

 experiments which you have conducted, test specimens installed, etc.? 



14. If desired, will you help in getting information such as under 13? 



15. Can you give assistance in the examination of your structures for this survey? 



16. Have any reports been made on this structure? If so, can a copy be furnished 

 for use in the survey? Photographs? 



17. Will any piling be removed under \-our jurisdiction within the next two or 

 three months? Location and probable date of removal? 



18. What is your estimate of the total damage, in terms of repairs or replacements, 

 to date? 



Please use a separate sheet for each structure, and address reply to 



C. L. Hill, 



L^ S. Forest Service, 



Ferry Building, San Francisco, 

 California. 



