CHAPTER 6 - ANALYSIS OF LAND-USE WITHIN ZOC FOR TOXIC AND HAZARDOUS MAT. 

 Cape Cod Aquifer Management Project Final Report Page 55 



hazardous waste sites identified six locations in ZOC #1, all of which 

 were the result of petroleum-product contamination. 



Table 6.7 Nuitier of Spills end Leaks Reported to DEQE in ZOC «1 from 

 January 1985 to Decenter 1986. 



Category Nurber of Occurences 



SOURCE OF SPILL OR LEAK 



UodergroirxJ Storage T<jnks 9 



UST Pipe Fai lure 5 



Atxjve Ground Tanks 1 



Transformers 5 



Drins 2 



Miscellaneous (from pipes 



hoses, etc.) 4 



TOTAL 21 



Source: DEQE Southeastern Regional Office, Division of Hazardous Waste, 

 Office of Incident Response, Lakeville, MA. 



6.4.5 Road Salt 



In 1986, the Massachusetts Department of Public Works, recognizing the 

 sensitivity of the aquifer on Cape Cod, reduced its application rate of 

 sand and salt from a 1:1 ratio to a 4:1 ratio on most roads. Only those 

 highly travelled state roads received the traditional application rate. 

 Within ZOC #l,only Route 6 in the northern portion of the ZOC is receiving 

 this higher salt application rate. 



6.4.6 Application of the Nitrate Loading Formula 



Approximately 70 percent of the Zone is unsewered. The major portion 

 of the collection system for the waste -water treatment plant is in the 

 southern portion of the Zone and services some of the larger commercial 

 activities. However, there is still an assumed threat to the wells from 

 nitrogen. Utilizing the predictive nitrate -nitrogen loading formula de- 

 rived by CCAMP participants , an estimated load was calculated within ZOC 

 #1, (see CCAMP nitrate nitrogen loading report by Frimpter, et al. , 1988) 

 conclusions point heavily to the impact of the Barnstable Waste-Water 

 Treatment Plant as a contributor to the total nitrogen load. Conse- 

 quently, management alternatives must recognize that while review of new 

 activities within ZOC #1 is important, primary attention must focus on the 

 operations of the waste-water treatment plant. 



