Sampling Sites

Wastewater VOC survey, August 5, 6 2002

Tesoro Refinery, a.k.a. Golden Eagle Oil Refinery (BAAQMD Plant #B2758)
150 Solano Way, Martinez California

Refinery Background: The Golden Eagle Refinery is in Contra Costa County on the eastside of San Francisco Bay in the city of Martinez. It has the capacity to process 168,000 barrels of petroleum daily. It converts crude oil primarily into gasoline. The plant has fluid catalytic cracking, hydrocracking, reforming, alkylation and fluid coking capabilities. The refinery processes heavier crude oil from Alaska's North Slope and California's San Joaquin Valley. Crude oil arrives at Golden Eagle via tanker through docks located on San Francisco Bay and via pipeline links to California oil fields. Products are shipped to customers by truck, rail, tanker, barge and a product pipeline network serving Northern California and Western Nevada.

Project Study: The study intends to determine VOC emissions from wastewater, ambient air locations, and VOC emissions from ancillary wastewater system process units.

Water Sample procedures: Two methods will be used to collect water samples. A coliwasa sampler is the preferred method. However, If the depth of the wastewater is less than one foot a grab sample method shall be used.

Coliwasa sample: Sample size = 250 ml glass open mouth jar. (Coliwasa stands for composite liquid waste sampler). A coliwasa is designed to take a composite (from top to bottom) sample. The device used in this study is manufactured in high-density polyethylene with and Teflon coated topper, maximum sample size = 250 ml. (Reference: ASTM method D5495-94 (2001) Standard Practice for Sampling with a Composite Liquid Waste Sampler).

Grab sample (Sample size = 1 liter container) A grab sample is designed to collect a liquid samples whose upper surface can be accessed by the suitable device, i.e., manhole. The device used in this study uses a caged, i.e., protected, 1-liter glass sample container. (see ASTM method D6759-02 Standard Practice for Sampling Liquids Using grab and Discrete Depth samplers).

Air Sample = air ambient air grab sample into a 6 liter Stainless steel Summa® passivated canisters. Canisters begin evacuated and will be allowed to return to ambient in wastewater areas and sewer openings.

Mechanics of Sampling: Sewer manholes and junction boxes will be sampled via coliwasa or grab container. Process line sampling will be use standard Tesoro sampling procedures.

Sample prep and organizational meeting:

Mechanics of Sampling: Sewer manholes and junction boxes will be sampled via coliwasa or grab container. Process line sampling will be use standard Tesoro sampling procedures.

Sample prep and organizational meeting:

Sampling Procedure for coliwasa and grab sampling locations

Sampling Locations
See Sewer Map, Tosco Refining Company, Avon, CA (Used for 1999 Benzene NESHAPS Report/Study)

Notes:

1. Spiking - lab will spike a 1 out of ever ten water samples.
2. Preservation - Samples will be taken with sample containers supplied by McCampbell Analytical Inc. with preservative. Preserve wastewater samples will be stored in wet ice and transported to lab on same day samples were taken.
3. Trip/equipment blank prepared using laboratory deionized / low organic water using unused coliwasa.
4. One duplicate will use a coliwasa (using new coliwasa) a new section of 3-inch PVC pipe.
5. Sample Labeling Code example: P-1 for Tesoro sample point #1.
6. Field staff will measure the relative volumes of aqueous phase and oil phase using a graduated cylinder. Staff will record phases present in sample (e.g., solids, emulsion, water layer, and oily layer).

Procedure for analyzing the wastewater samples will be EPA method 8015/8020. The wastewater samples are one phase (water). Each wastewater sample will result in two analyses (TPH gasoline & TPH diesel). McCampbell Analytical 110, Second Avenue South, D#7, Pacheco, CA 94553.