Page 37 - Yucaipa Valley Water District
P. 37
Director Memorandum 17-062
Date: July 18, 2017
Prepared By: John Wrobel, Regulatory & Environmental Control Manager
Subject: Consideration of a Proposal from G&G Environmental Compliance to Update
the Yucaipa Valley Water District’s Pretreatment Local Limits
Recommendation: That the Board authorizes the General Manager to execute a contract
with G&G Environmental Compliance for a sum not to exceed $38,600.
On January 3, 2001, the Board of Directors established the District’s Pretreatment Program by
the adoption of Resolution 2001-01. An important part of the pretreatment program, consistent
with EPA Pretreatment Regulations 40 CFR Part 403, is the creation of technically based local
limits. Under this requirement, the District must establish discharge limits for various commercial
and industrial sewer customers to prevent pollutants from entering the sewer treatment system
that may interfere with the plant, degrade the quality of biosolids, or pass untreated through the
treatment plant to contaminate the receiving waters.
The current local limits were established based upon the treatment processes in effect in 2009.
Since that time, the Wochholz Regional Water Recycling Facility has been upgraded to a capacity
of 8.0 million gallons per day (MGD) with a reverse osmosis treatment system.
G & G Environmental Compliance has been providing technical assistance to District staff on the
pretreatment program and has been involved in the most recent local limit evaluation. Therefore,
District staff requested the attached proposal from G & G Environmental Compliance to develop
the pretreatment local limits.
Yucaipa Valley Water District - July 18, 2017 - Page 35 of 65
