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Page 3 of 6 1 have had some recent involvement at the Olivera Foods site. Mr. Olivera is currently looking to improve manure management on the property and plans to add a fly ash drying pad to the inside of the secondary lagoon that is currently dry. Mr. Olivera has submitted an amendment to his Manure Management plan to conduct a windrow manure drying operation in this location. This operation is similar to a composting operation in appearance, but is for the purpose of drying manure. I made an unannounced site visit to the ranch on August 9, 2010, to check on the windrow drying operation and windrow temperatures. The temperatures were below 122 degrees F (Title 14, California Code of Regulations trigger for regulation). At West end of Briggs Road I didn't note any odors from the Olivera manure lagoon, but did begin to detect odor at 500 feet from the lagoon. The odor was initially light, but increased as I approached the lagoon. I checked the manure lagoon for a floating solids mat and noted that the mat covered 40-50% of the lagoon. My concern with the mat is that it could increase the incidence of fly breeding. I spoke with the site manager, Mr. John Den dulk. I asked Mr. Den dulk to agitate the lagoon and break up the solids mat to prevent fly breeding. He stated that he had concerns that breaking up the mat may cause more odor, but he needed to prevent the fly breeding issue and agreed to do it. During the conversation, Mr. Den dulk mentioned that Mr. Olivera is currently seeking a permit to install a bio-digester at the site. This would handle the manure waste and the methane gas produced could generate electricity. Mr. Olivera has continued to make efforts to lower the impact from his operation on the surrounding community. Some of the changes are still in progress (not finished). Our office received an odor complaint on August 10, 2010. 1 made a site visit on August 11, 2010. During the site visit I spoke with Mr. Den dulk and he confirmed that they agitated the lagoon on August 10, 2010, for approximately 1 hour. I called the complainant back and the complainant had already called APCD. The EHD oversees Olivera Foods operation for the manure management practices, solid waste management, vector control and sanitation. The EHD has made it a practice to respond to all complaints. The complaints received by the EHD for odor can be an indication that the operation may have other issues related to our oversight, so we respond. If issues exist that are under the EHD's authority, then we will follow up. If they are not, then we refer them to the appropriate agency. Robert Robert McClellon, Program Coordinator REHS Environmental Health Department 600 E. Main Street Stockton, CA 95202 (209)468-0332 From: Donna Heran [EH] Sent: Tuesday, August 17, 2010 10:22 AM To: Robert McClellon [EH] Subject: FW: Olivera Egg Ranch FYI From: Donna Heran [EH] Sent: Tuesday, August 17, 2010 10:16 AM To: Scott Tyrrell [BOS] Cc: Leroy Ornellas [BOS] Subject: RE: Olivera Egg Ranch Good morning, Scott, Robert McClellon, the Program Coordinator in our office who has conducted inspections at the Olivera Ranch is currently out of the office, but he'll be back shortly to provide an updated report for 4/20/2011