EXHIBIT 8-A
ADDRESS MRWPCA
ISSUES REGARDING USE OF OUTFALL
FOR DISCHARGE OF
BRINE FROM SEAWATER DESALINATION PLANT
1. Meet with MRWPCA staff to obtain information regarding:
a. configuration of outfall (alignment, access, diffuser ports)
b. pattern of current and anticipated flows from wastewater treatment plant
c. current NPDES permit requirements
d. concerns MRWPCA may have regarding use of the outfall.
2. Based on anticipated pattern of flows from the wastewater treatment plant, conduct dispersion modeling to evaluate dilution of the brine in the ocean. If modeled dilution does not meet anticipated regulatory standards, recommend measures to comply with such standards.
3. Evaluate the potential for marine growth on the inside surface of the outfall and on the diffuser ports. If there is a potential for increased marine growth in excess of current rates, recommend measures to eliminate excess growth, or to maintain the outfall and diffuser ports in a condition satisfactory to MRWPCA.
4. Determine what changes to MRWPCA’s current NPDES permit (or a separate, additional permit for brine discharge) would be required, if the outfall were to be used for brine discharge.
5. Evaluate potential permitting requirements for brine discharge:
a. collection and reporting of baseline (pre-project) information
b. modeling requirements to characterize anticipated effects of brine discharge on marine environment
c. monitoring requirements once the project is in operation
[This topic could apply to use of Ranney injectors or HDD wells as well.]
6. Incorporate findings into desalination project technical memorandum.
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