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EXAMPLE: HOLDING POND SITE ASSESSMENT Nosuch Dairy 1234 Road Y, Pleasant, California The pond location is shown on the attached map. The pond excavation was completed on 15 August 1998. ' As shown on the attached sketch, the pond excavation is approximately 200 feet by 500 feet by 17 feet deep. Some of the excavated soil was used to create a raised berm that is 5-feet high and 10-feet wide so that the finished pond with a 2 foot thick clay liner is approximately 20 feet deep. The remaining excavated soil was used in corrals. 17 M 4 An initial assessment of soil in the excavation indicated that there are five soil layers as shown on the attached sketch: The soil texture classifications are based on a visual and tactile assessment conducted by Mr. William Jones. Mr. Jones' business address, phone number, and qualifications for conducting soil . assessments are attached. The five identified soil layers are: 1. A brown sandy loam to approximately 3 feet below grade 2. A dark brown sandy clay loam approximately 2 feet thick 3. A reddish-brown sandy loam approximately 4 feet thick 4. A hardpan (claypan) approximately 1 to 2 feet thick (see attached photograph) Fit, 5. Light brown loamy sand to the base of the excavation Based on the visual inspection of the soil, it was determined that a 2-foot thick liner consisting of imported clay soil would be placed in the bottom of the excavation and would extend approximately 6 feet up the F sidewalls. The imported soil was obtained from McNoughts Soil Products in Ione, California. The liner was completed on September 2, 1998. Three I-pound composite soil samples from the excavation and liner were submitted to Z&Z Laboratories in Mercer California. The composites were made from 1-pound individual samples collected by excavating an area approximately 4" by 4" by 6" deep. The individual samples were composited by thoroughly mixing the individual samples in a plastic bucket and then removing a sample. The composite samples are described below: r Sample ID Sample Description Sl Composite of eight 1-liound soil samples of the first sandy loam layer (two from each } sidewall and endwail) collected approximately 3 to 5feet below ground surface (b s) S2 Composite of eight 1-pound soil samples of the second sandy loam layer (two from each v sidewall and endwall) collected approximately 8 to 11 feet bgs r Ll Com osite of,four 1- ound soil samples of the liner after placement see sketch . No samples of the sandy clay loam layer were collected because the layer had significantly more clay than the sandy loam layers that were above and below it. No samples of the hardpan or the loamy sand layer were collected because they were covered with the imported clay soil. The analytical results for the submitted samples are summarized below. The laboratory reports are attached. Available groundwater information (copy attached) indicates that the highest recorded local groundwater is approximately 10 feet below the base of the pond excavation. Sample ID %Sand %Silt °/a Clay Soil Texture S1 63 24 13 Sandy Loam S2. 53 35 12 Sandy Loam L1 22 28 50 CIU fir