fr_3247_6-2-23_tlsSubmitted by
FIELD DENSITY SUMMARY
3247
STPUD 2023 INSPECTIONS & TESTING SERVICES -
TASK ORDER NO. 21
South Lake Tahoe, CA
South Tahoe Public Utility DistrictAdrian Combes
SOUTH TAHOE PUBLIC UTILITY DISTRICT
1275 Meadow Crest Drive
South Lake Tahoe, CA 96150
7
I performed density testing on base and native at center of Saddle Rd in dry hydrant trench and at STA 10+60 on
tank road for hydrant line 4’ north of T-Valve.
JVL____
Center of Saddle Rd in dry hydrant trench
Dayton materials
1
Center of Saddle Rd in dry hydrant trench
Troxler 3430
Direct
-
-
-
-
-
-
- -
-
-
-
-
-
-
Density
Moisture
DocuSign Envelope ID: 02A1F311-B2DE-416E-B521-7AE0D84558D8
DATE JOB NO.
PROJECT
LOCATION
OWNER
CONTRACTOR
WEATHER TEMP
° F at
°F at
PRESENT AT SITE
Reno, Nevada 89511
phone (775) 851-8205
fax (775) 851-8593
THE FOLLOWING WAS NOTED
Report No.
IN HOUSE ROUTE TO: EMAIL:
JAD___
Submitted by
3247
STPUD 2023 INSPECTIONS & TESTING SERVICES -
TASK ORDER NO. 21
South Lake Tahoe, CA
South Tahoe Public Utility DistrictAdrian Combes
SOUTH TAHOE PUBLIC UTILITY DISTRICT
1275 Meadow Crest Drive
South Lake Tahoe, CA 96150
7
I arrived onsite and met with George and Les.
Crew began removing trench plates for hot tap at Saddle Rd and Keller Rd.
Alden arrived and began setting up his hot tap machine.
Per STPUD, Alden used a 5-1/2” drill bit to tap the 10” water main and a 4-3/8” to tap the 6” water main.
After hot tapping was complete the crew excavated the trench for the dry hydrant. They also dug out the storm
drain and verified its pipe location so they could best avoid it during excavation.
Buck noticed the dry hydrant had a 4” outlet and their pumping station runs off a 6” pipe. He verified with STPUD
office that this would be acceptable.
Crew placed base in trench and compacted before placing pipe. Then they placed pipe in a polyethylene
encasement and placed pipe in trench.
Crew placed a 6” to 4” reducer then 10’ of 4” DI pipe then connected a 45 elbow and placed 34’ of 4” DI pipe. Plan
to see hydrant tomorrow.
Crew then backfilled with base and native.
I performed a density test of base in center of roadway. Density test was acceptable.
Crew then backfilled with native and I performed a density test on native at center of roadway. Density was
acceptable. The crew then backfilled last 12” with base and put 3” of temporary asphalt to level with road grade.
Crew then cleaned up job site and made sure all environmental controls were in place before the weekend.
Another White Rock crew also excavated for hydrant line at the bottom of tank road. They excavated the trench to
hydrant location and hand dug out the T-Valve and cleaned for connection. Then placed base and compacted.
Crew then placed 14’ of 6” DI pipe and hydrant. They placed concrete thrust block behind hydrant and backfilled
with base.
I performed a density test on base 4’ away from T-Valve. Density was acceptable.
Crew then backfilled with native and replaced drain rock along side road.
White Rock crew: George, Les, Edwardo, Steven, German, Trey, Alex, Jake, Richard, and Dwight.
Equipment onsite: CAT 305 ex, CAT 309 ex, CAT 928 loader, 2-10 wheel dump truck, 2-1 ton truck, 4 trench
plates, 4 shores.
JVL____
AM
PM
2
DocuSign Envelope ID: 02A1F311-B2DE-416E-B521-7AE0D84558D8