CALIFORNIA REGIONAL WATER QUALITY ml\{CROL !DARDSAN F'PANCISCO BAY REGION

ORDER NO. 84-8

NPDES PERMrr NO. CA0005240

WASTE DISCHARGE Rl'X)UIREMENTS FOR,

CALIFORNIA AND HAWAIIAN SUGAR COMPANYCROCKE'r'r, CONTRA COSTA mUNTY

AND

CR()('J\ETI-VAWNA SANITARY DIST'RICTCl,OCKETT, CONTJ:l!\ cos'rA COUNTY

'I'he California Re.gional Water Quality Control Board, San Francisco BayRegion, (hereinafter Board), finds trHt:

1. California and Hawaiian Sugar Ccmpany (hereinafter C&H) filed a Reportof Waste Discharge dated September 2, 1982 and provided additionalinformation in letters dated July 27, 1983 and September 12, 1983.Crockett--Valona Sanitary District (hereinafter District) by letterdated August 29, 1983 concurred in the joint application filed by C&H.The Report of Waste Discharge covers the C&H cane sugar refinery, theDistrict's sewerage system and U1e plant that treats and disposes oft.he combined waste.

2. C&ll and the District (hereinafter Dischargers) entered into aJoint-use Agreement for the Dischargers' treatment plant on November9, 1976.

3. The District is responsible for collecting and handling sewaqe withinits sewer syst.om. Sewage .is comminuted and degritted before theDietricL pumos it to the Diechargers 'treatment plant. AU the gritt.hus removed .is hauled to a permit.t.ed Claes II disposal si.t.e ,

4. C&H ie responsible for waste discharged at i t.s sugar refinery andeolid \vaste disposal s i.t.e , and for operation of the Discharqers'treatm,',nt. plant and outfall.

5. 'The Board adopted Order No. 78-93 preecribinq waste di scharqorequire11ents for the ))iecharge]~s on November 21, 1978.

6. C&H .i.s discharqinq induetrial and sanitary waet_,,,s oont.a in inqpollutants into Carquinez Strait and an unnamed tidal stream tributarythereto, both waters of the United States, as followe:

a. Waete 001

Cons i st.s of 27.4 million gallons per day (mgd) of once-throughcooling wat.er used in barometric condensers on vacuum pans andevaporators and in stream turbine heat exchangers. It alsoincludes brine and rinse water from zeolite units and boilerbIowdown water, and is discharged throuqh a diffuser at thebottom of Carquinez Strait. which ext.ends to approximately 200

feet offshore at a depth of 47 feet.