A-1 Tank Service Inc
1111 Industrial Pkwy West
Hayward, CA 94544
(510) 886-4455
FAX (510) 537-2784

Agyare Engineering Services Inc.
Kwame Agyare, P.E.
(510) 738-4258
agyare.eng@gmail.com

Andrew Westerman (Lea and Braze Engineering, Inc.)
2495 Industrial Parkway West
Hayward, CA 94566
(408) 516-3712.

Bio Sphere Consulting Inc
Andrew Brownstone
1315 King Street
Santa Cruz, CA 95060
(831) 430-9116
FAX (800) 515-8685
 

Chris Day
(650) 293-1045
chris5day1966@gmail.com

Cons Backhoe
8975 Hwy 84
La Honda, CA 94020
(650) 207-9403
FAX (650) 747-0143

CYA Septic
490 Chadbourne Rd. Suite A179
Fairfield, CA 94534
(707) 688-2246
cya.septic@gmail.com

Denis Maslennikov
(Lea & Braze Engineering, Inc.)
2495 Industrial Parkway West
Hayward, CA 94545
(510) 887-4086 ext. 144
dmaslennikov@leabraze.com

Entera Geoscience, Inc.
Elizabeth Schwartz, P.G
(650) 280-1159
eschwartz@enterageoscience.com

Fall Creek Engineering
Peter Haase
1525 Seabright Ave
Santa Cruz, CA 95062
(831) 426-9054
 

Myer Engineering, Inc.
Paul Myer, MS, PE
(831) 800-2244
paul@myerengineering.com www.myerengineering.com

Half Moon Bay Grading & Paving Inc.
David Talo
1780 Higgins Canyon Road
Half Moon Bay, CA 94019
(650) 726-3588
FAX (650) 726-3582

Langley Hill Quarry
PO Box 620636
(650) 851-0126
FAX (650) 851-4126

Lyon Services
Peter Lyon
260 Autumn Street
La Honda, CA 94020
(650) 208-5924
lyonserves@gmail.com
 

O. Nelson & Sons
3345 Tripp Road
Woodside, CA 94062
(650) 851-3600
FAX (650) 851-5714
 

NexGen Engineering
Ian Cole
1043 Nichols Drive, Suite #200
Rocklin, CA 95765
(866) 269-0999

Christopher Conner Construction
40 Wurr Rd.
Loma Mar CA 94021
(650) 868-0346
cconner2020@yahoo.com

Rings Backhoe & Drilling
PO Box 18961
251 Coggins Road
La Honda, CA 94020
(650) 520-1443
jeferi@prodigy.net

Fox Onsite Solutions, Inc. 
Ryan Fox, REHS 
1575 Sheffield Ave
San Jose, CA 95125
(831) 531-5533
contact@foxonsite.com
foxonsitesolutions.com

Ryan Magee
(Lea & Braze Engineering, Inc.)
2495 Industrial Parkway West
Hayward, CA 94545
(510) 887-4086 ext. 127
rmagee@leabraze.com 

Sean O’Donoghue
Irish Excavation
(408) 659-6136
sean@irishexcavation.com

Stefani Hartsell
(650) 438-3334
stefanihartsell@gmail.com 

Steven Hartsell
(650) 888-2419
srhartsell@gmail.com

Trinity Liquid Waste Solutions
4900 Hopyard Road, Suite 100
Pleasanton, CA 
(510) 874-6489
info@trinityliquidwaste.com
 

A-1 Backhoe Service
23136 3rd Ave
Stevinsen, CA 95374
(408) 639-8453
 

A-1 Septic Tank Service Inc
1111 Industrial Pkwy West
Hayward, CA 94544
(510) 886-4455
FAX (510) 537-2784 
 

Able Septic Tank Service 
1020 Ruff Dr.
San Jose, CA 95110
(408) 377-9990
 

Andreini Brothers Inc.
151 Main Street
Half Moon Bay, CA 94019
(650) 726-2065
Mario@Andreinibros.com

Blue Mule Builders Inc.
PO Box 601
La Honda, CA 94020
(650) 541-6400
ray@bluemulebuilders.com

Caltech Environmental Consultation 
1043 Nichols Ct., Suite 200 
Rocklin, CA 95765
(530) 798-3964
lance@caltechenvironmental.com
 

Castle Plumbing & Pumping Services
1718 Mount Rushmore Dr.
San Jose, CA 95127
(650) 771-3692
javiercastleplumbing@gmail.com

Christopher Conner Construction
40 Wurr Road
Loma Mar, CA 94021
(650) 868-0346

C.L.M. Excavating Inc.
516 Cherry Ct.
Chowchilla, CA 93610 
510-246-6733
 

Cons Backhoe
8975 Hwy 84
La Honda, CA 94020
(650) 207-9403
FAX (650) 747-0143

CW Excavation
PO Box 2370
Santa Cruz, CA 95063
(831) 479-7853
 

E & S Trucking
Edward Kuerzel
1770 El Rancho Drive
Santa Cruz, CA 95060
(831) 438-7940
FAX (831) 438-7940
 

Freedom Underground Plumbing
270 Umbarger Rd. SPC 131
San Jose, CA 95111
​408-693-6018
freddy@freeundergroundestimates.com
 

Half Moon Bay Grading & Paving Inc
Gary Lee Giovannoni
1780 Higgins Canyon Road
Half Moon Bay, CA 94019
(650) 726-3588
FAX (650) 726-3582
 

Hensley Construction
PO Box 814
Ben Lomond, CA
(831) 465-4732

 

Langley Hill Quarry
PO Box 620636
(650) 851-0126
FAX (650) 851-4126
 

Loza and Sons Inc.
PO Box 18961
Oakland, CA 94619
(510) 351-9700
 

O. Nelson & Sons
3345 Tripp Road
Woodside, CA 94062
(650) 851-3600
FAX (650) 851-5714
 

Rings Backhoe and Drilling
P. O. Box 356
251 Coggins Road
La Honda, CA 94020
(650) 520-1443
FAX (253) 423-7030
http://rings-excavating.com/index.html
 

Sean O’Donoghue
Irish Excavation
305 Vineyard Town Center, Suite 109
Morgan Hill, CA 95037
408-659-6136
sean@irishexcavation.com
www.irishexcavation.com

 

WH Dempsey Engineering
2070 La Honda Rd
San Gregorio, CA 94020
(650) 207-9828
FAX (650) 332-1656

Bio Sphere Consulting Inc
Andrew Brownstone
1315 King Street
Santa Cruz, CA 95060
(831) 430-9116
 

BKF Engineers
255 Shoreline Drive #200
Redwood City, CA 94065
(650) 482-6300
 

Bonny Doon Environmental Systems
P.O. Box 28
Felton, CA 95018
(831) 335-3666
 

Christopher Day, R.E.H.S.
Environmental Health Consulting
P.O. Box 26
Redwood City, CA 94064
(650) 293-1045
christopherdayr@aol.com
 

EKI Environment & Water, Inc.
577 Airport Blvd Suite 500
Burlingame, CA 94010
(650) 292-9100
 

John Ryan Halbom
Able Construction Group, Inc. 
1020 Ruff Drive
San Jose, CA 95110
(408) 377-9990 

Fox Onsite Solutions, Inc. 
Ryan Fox, REHS 
1575 Sheffield Ave
San Jose, CA 95125
(831) 531-5533
contact@foxonsite.com
foxonsitesolutions.com

Lea and Braze Engineering
2495 Industrial Parkway W
Hayward, CA 94545
(510) 887-4086
 

Michelucci & Assoc.
1801 Murchison Dr., Suite 210
Burlingame, CA 94010
(650) 692-0163
FAX (650) 344-2219
 

Questa Engineering
P.O.Box 70356
Pt. Richmond, CA 94807
(510) 236-6114
 

Steven Hartsell
P.O. Box 342
Pacifica, CA 94044
(650) 888-2419
 

Tim Johnston, P.E.
Acorn Onsite, Inc.
2288 Buena Vista Avenue
Livermore, CA
(925) 447-5200
Acornonsite.com
 

Blue Planet-Green Power
P.O. Box 4024
Menlo Park, CA 94026
Phone: (650) 366-8844
FAX (650) 366-8843
 

H.R. Henry Plumbing
Montara, CA 94037
(650) 728-1131
 

Periat Plumbing
P.O. Box 338
Pescadero, CA 94060
(650) 879-1526

Reliable Well & Pump Service
P. O. Box 3186
Half Moon Bay, CA 94019
(650) 726-7269
 

Simms Plumbing
P.O. Box 738
Pescadero, CA 94060
(650) 879-1823
 

Wilkinson Enterprises Well and Pump
890 Sonora Avenue
Half Moon Bay, CA 94019
(650) 726-4212

Canepa and Sons
14384 Cuesta Court
Sonora, CA 95370
(209) 532-1136
 

Earth Flow Drilling
2600 Smith Grade
Santa Cruz, CA 94019
(831) 423-3288
 

Garcia Well & Pump Co.
1045 Weeks Street
East Palo Alto, CA 94303
(650) 322-2803
 

Landino Drilling
P.O. Box 419
Davenport, CA 95017
(831) 426-4129
FAX (831) 426-0526
 

Maggiora Bros. Drilling, Inc.
595 Airport Blvd
Watsonville, CA 95076
(831) 724-1338
 

Pitcher Drilling
218 Demeter Street
East Palo Alto, CA 94303
(650) 328-8910
 

Reliable Well & Pump Service (well destruction only)
P.O. Box 3186
Half Moon Bay, CA 94019
(650) 726-7269
 

Weeks Drilling & Pump Company
P.O. Box 176
6100 Highway 12
Sebastopol, CA 95473
(707) 823-3184 / (707) 542-3272
 

Aaron’s Septic Tank Serice
P.O. Box 24662
San Jose, CA 95124
(408) 371-2350
 

A1 Septic Tank Service, Inc.
1111 Industrial Pkwy. West
Hayward, CA 94544
(510) 886-4455
 

Able Underground Construction
Gilbert, Glen
1020 Ruff Dr.
San Jose, CA 95110
(408) 377-9990
 

American Portables
P.O. Box 3187
Half Moon Bay, CA 94019
(866) 332-7471
 

Bay Area Temporary Sanitation
44800 Industrial Drive
Fremont, CA 94538
(510) 565-5379
 

Castle Pumping & Plumbing 
1718 Mount Rushmore Drive
San Jose, CA 95127
(408) 417-3091 
 

Hanson & Fitch, Inc
P. O. Box 175
Danville, CA  94526
(800) 847-7037
 

JW Enterpises
1689 Morse Ave.
Ventura, CA 93003
Phone: (805) 658-2449
FAX (805) 658-0638
 

National Construction Rentals
1300 Business Center Dr.
San Leandro, CA 94577
(510) 563-4000
 

NorCal Portable Services
P.O. Box 53328
San Jose, CA 95153
Phone: (408) 842-8448
FAX (408) 842-8405
 

Northwest Cascade, Inc.
DBA Honey Bucket
104 Avila Road
Pittsburg, CA  94520
(800) 325-2371
 

Pichanga RV Service Cleaning
901 N. Rengstorff Ave.
Mountain View, CA 94043
(650) 679-2913
 

Pete’s Outflow Technicians
P.O. Box 1066
Soquel, CA 95073
(831) 475-0959
 

Redwood Services Inc.
350 Land Rd.
Burlingame, CA 94010
(650) 872-2310
 

Ryan’s Pumping Service, Inc.
PO Box 733 Gilroy, CA 95021
(408) 763-0914
 

United Site Services
3408 Hillcap Ave.
San Jose, CA 95136
(800) 864-5387
 

Valley Services
1615 B South 7th Street
San Jose, CA 95112
(408) 297-5352
 

Western Site Services
1860 S. 7th Street
San Jose, CA 95712
(408) 298-4545