Woodbury's Point, the Board believed that although it may not be the 

 most economical j reinforced concrete facing is the most satisfactory, 

 and feasible method.. Careful treatment will be required to avoid 

 infiltration of water, either from wave action or precipitation, into 

 any exposed joint <, 



Largely as a result of protection of the headlands against erosion 

 there is now no apparent natural source of new material to replace 

 losses In view of the lack of natural replacement material, breach- 

 ing of the tombolo is possible, if low places are allowed to develop 

 where storm waves can wash across the tombolo „ The Board therefore 

 concurred in the plan of the Division Engineer to build up the crest 

 of the tombolo to elevation 18 feet above mean low water „ 



The Board noted that the recommended method of protection of the 

 shore in the vicinity of the Metropolitan District Commission bath- 

 house results in an improved beach « The Board concurred in the opinion 

 that the improved wider beach will provide more effective shore 

 protection o As the backshore beach area in the vicinity of the bath- 

 house is stony and unsatisfactory for recreational use, the proposed 

 wider and improved beach will provide, in addition to other benefits, 

 recreational benefits which increase the economic justification of the 

 worko 



The Board also noted that the benefits evaluated for the pro-r 

 tection and improvement of Lynn-Nahant Beach apply principally to the 

 shore from Woodbury's Point to and including the recreational beach 

 in the vicinity of the Metropolitan District Commission bathhouse » 

 However, the Board believed that the unevaluated benefits consisting 

 of prevention of indirect damages that would result to the Little 

 Nahant and Nahant area from breaching of the tombolo amply justify 

 the proposed stone mound construction from south of the bathhouse to 

 Little Nahant, the annual charges on which are estimated at $4- s 860<. 



In accordance with existing statutory requirements, the Board 

 stated its opinion that? 



a. It is advisable for the United States to adopt a project 

 authorising Federal participation in the cost of protecting and im- 

 proving the publicly owned shores at Lynn and Nahant, Massachusetts; 



bo The public interest involved in the proposed measures 

 for the publicly owned shores is substantial <, It is associated with 

 prevention of direct damages to public property, indirect damages 

 prevented, and recreational benefits to the general public 



c o The share of the expense which should be borne by the 

 United States is one-third of the first cost of the proposed new 

 construction for publicly owned shores,, The estimated amount of 

 this share is $154., 670 <> 



37 



