SU0006223 SSNL - Laserfiche WebLink

Home Browse Search

w � December 12, 2006 NOA Project Number: E06094A n3.6 Impact of Nitrate Loading to Nearby Water Sources :Based on the method and assumptions described,in addition to the geologic setting,we do not P1believe the proposed parcels will cause a build up of nitrate in the ground water above 10 mg/L-N over the long term. 1. An existing pond is located on the site and borders the Designated Remainder and parcels two, three and four. If all San Joaquin County On-Site 1 lastexater Disposal Standards are followed,requiring proper septic system construction and sizing,we do not foresee percolating effluent affecting any Rsurface water resources. 4.0 DISCUSSION OF NITRATE LOADING RESULTS 4.1 Total Nitrate Impact Based on the method and assumptions described, the result of the nitrate loading balance indicates s that the propoed development on the proposed parcels should not cause a build up of nitrate in the ground water above 10 mg/L-N over the long term. I_= 4.2 Methods of Mitigation Because of the favorable result of the nitrate loading calculation, no mitigation measures are warranted for the proposed parcels. + If a second dwelling unit is to be installed on the proposed parcels, then the nitrate load could r increase between approximately 10.5 and 11 mg/L-N, and additional engineering to mitigate impacts may be necessary. 5.0 CONCLUSIONS AND RECOMMENDATIONS Based on the method and assumptions described,in addition to the geologic setting,we do not } 'believe the proposed parcels will cause a build up of nitrate in the ground water above 10 mg/L-N w over the long term. 1 Af a seconddwelling unit i"s'to be installed on the proposed parcels, then the nitrate load could increase between approximately 10.5 and 11 mg/L-N,and additional engineering to iruttgate impacts may be necessary..- 5.2 Attachments # All required attachments and appendices can be found at the tear of this package. 1 g � U l