Four sites are identified as containing possible borrow material but only 

 two (Fairport Harbor and Lorain-Vermilion) are judged to be of high potential 

 for beach nourishment; the four sites were described initially by Hartley (1960). 

 No new sizable sand deposits were found although much of the subbottom was 

 unmapped before the CERC-ODGS survey. 



The major area of the Fairport Harbor sand deposit contains an estimated 

 134 million cubic meters of fine- to medium-grained quartz and shale fragment 

 sand based on an average thickness of 4 meters; an adjacent area contains an 

 estimated 12 million cubic meters of similar sand based on an average thick- 

 ness of about 1.5 meters. 



The part of the Lorain-Vermilion deposit which was resurveyed in this study 

 contains an estimated 32 million cubic meters of a fine-grained quartz and feld- 

 spar rich sand with gravel, based on calculations from the isopach map in Figure 

 17. However, significant additional sand deposits are shown by the Beach 

 Erosion Board (1952) and Hartley (1960) to be associated with a ridge, north of 

 the surveyed area, that crosses Lake Erie to Point Pelee, Ontario. 



Both the Cedar Point and Maumee Bay deposits are considered low potential 

 for beach nourishment because of their fine grain size. 



At present, sand is commercially dredged from the Fairport Harbor, Lorain- 

 Vermilion, and Maumee Bay deposits. Sand from the Lorain-Vermilion deposit 

 was used by the U.S. Army Corps of Engineers to nourish the beach at Lakewood 

 Park, Lorain. 



If a significant volume of any of the deposits is needed for a project, it 

 is recommended that additional cores be taken to provide more detailed infor- 

 mation on the three-dimensional framework of the deposit as well as to provide 

 additional textural data for proper design of the beach-fill material. 



34 



